GET https://kbin.spritesserver.nl/u/@Lazyhotodogu@lemmy.world

Response
200 OK
IP
13.58.68.83
Profiled on
Token
690868

Security

Token

There is no security token.

Firewall

main Name
Security enabled
Stateless

Configuration

Key Value
provider security.user.provider.concrete.app_user_provider
context main
entry_point App\Security\KbinAuthenticator
user_checker App\Security\UserChecker
access_denied_handler (none)
access_denied_url (none)
authenticators 
[
  "two_factor"
  "remember_me"
  "App\Security\KbinAuthenticator"
  "App\Security\FacebookAuthenticator"
  "App\Security\GoogleAuthenticator"
  "App\Security\GithubAuthenticator"
  "App\Security\KeycloakAuthenticator"
]

Listeners

Listener Duration Response 
Symfony\Component\Security\Http\Firewall\ChannelListener {#723
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
  -logger: Monolog\Logger {#783 …}
  -httpPort: 80
  -httpsPort: 443
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\ContextListener {#706
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorage {#1017 …}
  -sessionKey: "_security_main"
  -logger: Monolog\Logger {#783 …}
  -userProviders: Symfony\Component\DependencyInjection\Argument\RewindableGenerator {#705 …}
  -dispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
  -registered: false
  -trustResolver: Scheb\TwoFactorBundle\Security\Authentication\AuthenticationTrustResolver {#780 …}
  -sessionTrackerEnabler: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage::enableUsageTracking(): void {#703 …}
}
 0.28 ms (none) 
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584
  -authenticatorManager: Symfony\Component\Security\Http\Authentication\AuthenticatorManager {#595 …}
}
 0.00 ms (none) 
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582
  -twoFactorFirewallConfig: Scheb\TwoFactorBundle\Security\TwoFactor\TwoFactorFirewallConfig {#842 …}
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}
}
 0.05 ms (none) 
Symfony\Component\Security\Http\Firewall\AccessListener {#579
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -accessDecisionManager: Symfony\Component\Security\Core\Authorization\TraceableAccessDecisionManager {#937 …}
  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\LogoutListener {#786
  -tokenStorage: Symfony\Component\Security\Core\Authentication\Token\Storage\UsageTrackingTokenStorage {#1018 …}
  -options: [
    "csrf_parameter" => "_csrf_token"
    "csrf_token_id" => "logout"
    "logout_path" => "app_logout"
  ]
  -httpUtils: Symfony\Component\Security\Http\HttpUtils {#841 …}
  -csrfTokenManager: Symfony\Component\Security\Csrf\CsrfTokenManager {#1015 …}
  -eventDispatcher: Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher {#747 …}
}
 0.00 ms (none)

Authenticators

No authenticators have been recorded. Check previous profiles on your authentication endpoint.

Access Decision

affirmative Strategy
# Voter class
1 
"Symfony\Component\Security\Core\Authorization\Voter\AuthenticatedVoter"
2 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
3 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
4 
"Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter"
5 
"App\Security\Voter\EntryCommentVoter"
6 
"App\Security\Voter\EntryVoter"
7 
"App\Security\Voter\MagazineVoter"
8 
"App\Security\Voter\MessageThreadVoter"
9 
"App\Security\Voter\MessageVoter"
10 
"App\Security\Voter\NotificationVoter"
11 
"App\Security\Voter\OAuth2UserConsentVoter"
12 
"App\Security\Voter\PostCommentVoter"
13 
"App\Security\Voter\PostVoter"
14 
"App\Security\Voter\UserVoter"

Access decision log

# Result Attributes Object
1 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
2 DENIED moderate 
Proxies\__CG__\App\Entity\Entry {#1583
  +user: Proxies\__CG__\App\Entity\User {#1404 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
  +slug: "MOSFET-as-Radiation-Detector"
  +title: "MOSFET as Radiation Detector"
  +url: null
  +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 15
  +favouriteCount: 14
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1689186194 {#1741
    date: 2023-07-12 20:23:14.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2021 …}
  +votes: Doctrine\ORM\PersistentCollection {#2011 …}
  +reports: Doctrine\ORM\PersistentCollection {#2022 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
  +badges: Doctrine\ORM\PersistentCollection {#2130 …}
  +children: [
    3 => App\Entity\EntryComment {#1612
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688615180 {#1430
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1650 …}
      +nested: Doctrine\ORM\PersistentCollection {#1671 …}
      +votes: Doctrine\ORM\PersistentCollection {#1667 …}
      +reports: Doctrine\ORM\PersistentCollection {#1670 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
      -id: 8526
      -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/875679"
      +editedAt: DateTimeImmutable @1688615248 {#1429
        date: 2023-07-06 05:47:28.0 +02:00
      }
      +createdAt: DateTimeImmutable @1688615180 {#1440
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +"title": 8526
    }
    2 => App\Entity\EntryComment {#1566
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688616233 {#1581
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1548 …}
      +nested: Doctrine\ORM\PersistentCollection {#1550 …}
      +votes: Doctrine\ORM\PersistentCollection {#1562 …}
      +reports: Doctrine\ORM\PersistentCollection {#1554 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
      -id: 8533
      -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/876062"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688616233 {#1564
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +"title": 8533
    }
    1 => App\Entity\EntryComment {#1604
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
        \n
        I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688980181 {#1620
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1619 …}
      +nested: Doctrine\ORM\PersistentCollection {#1701 …}
      +votes: Doctrine\ORM\PersistentCollection {#1687 …}
      +reports: Doctrine\ORM\PersistentCollection {#1689 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
      -id: 9352
      -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1067182"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688980181 {#1613
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +"title": 9352
    }
    0 => App\Entity\EntryComment {#1611
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        I just want to ask some points:\n
        \n
        - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1689047633 {#1711
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1630 …}
      +nested: Doctrine\ORM\PersistentCollection {#1628 …}
      +votes: Doctrine\ORM\PersistentCollection {#1599 …}
      +reports: Doctrine\ORM\PersistentCollection {#1625 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
      -id: 10274
      -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1105480"
      +editedAt: null
      +createdAt: DateTimeImmutable @1689047633 {#1616
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +"title": 10274
    }
  ]
  -id: 135
  -titleTs: "'detector':4 'mosfet':1 'radiat':3"
  -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687237046
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/156149"
  +editedAt: null
  +createdAt: DateTimeImmutable @1687153046 {#1709
    date: 2023-06-19 07:37:26.0 +02:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
3 DENIED edit 
Proxies\__CG__\App\Entity\Entry {#1583
  +user: Proxies\__CG__\App\Entity\User {#1404 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
  +slug: "MOSFET-as-Radiation-Detector"
  +title: "MOSFET as Radiation Detector"
  +url: null
  +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 15
  +favouriteCount: 14
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1689186194 {#1741
    date: 2023-07-12 20:23:14.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2021 …}
  +votes: Doctrine\ORM\PersistentCollection {#2011 …}
  +reports: Doctrine\ORM\PersistentCollection {#2022 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
  +badges: Doctrine\ORM\PersistentCollection {#2130 …}
  +children: [
    3 => App\Entity\EntryComment {#1612
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688615180 {#1430
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1650 …}
      +nested: Doctrine\ORM\PersistentCollection {#1671 …}
      +votes: Doctrine\ORM\PersistentCollection {#1667 …}
      +reports: Doctrine\ORM\PersistentCollection {#1670 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
      -id: 8526
      -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/875679"
      +editedAt: DateTimeImmutable @1688615248 {#1429
        date: 2023-07-06 05:47:28.0 +02:00
      }
      +createdAt: DateTimeImmutable @1688615180 {#1440
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +"title": 8526
    }
    2 => App\Entity\EntryComment {#1566
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688616233 {#1581
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1548 …}
      +nested: Doctrine\ORM\PersistentCollection {#1550 …}
      +votes: Doctrine\ORM\PersistentCollection {#1562 …}
      +reports: Doctrine\ORM\PersistentCollection {#1554 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
      -id: 8533
      -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/876062"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688616233 {#1564
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +"title": 8533
    }
    1 => App\Entity\EntryComment {#1604
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
        \n
        I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688980181 {#1620
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1619 …}
      +nested: Doctrine\ORM\PersistentCollection {#1701 …}
      +votes: Doctrine\ORM\PersistentCollection {#1687 …}
      +reports: Doctrine\ORM\PersistentCollection {#1689 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
      -id: 9352
      -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1067182"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688980181 {#1613
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +"title": 9352
    }
    0 => App\Entity\EntryComment {#1611
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        I just want to ask some points:\n
        \n
        - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1689047633 {#1711
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1630 …}
      +nested: Doctrine\ORM\PersistentCollection {#1628 …}
      +votes: Doctrine\ORM\PersistentCollection {#1599 …}
      +reports: Doctrine\ORM\PersistentCollection {#1625 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
      -id: 10274
      -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1105480"
      +editedAt: null
      +createdAt: DateTimeImmutable @1689047633 {#1616
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +"title": 10274
    }
  ]
  -id: 135
  -titleTs: "'detector':4 'mosfet':1 'radiat':3"
  -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687237046
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/156149"
  +editedAt: null
  +createdAt: DateTimeImmutable @1687153046 {#1709
    date: 2023-06-19 07:37:26.0 +02:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
4 DENIED moderate 
Proxies\__CG__\App\Entity\Entry {#1583
  +user: Proxies\__CG__\App\Entity\User {#1404 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
  +slug: "MOSFET-as-Radiation-Detector"
  +title: "MOSFET as Radiation Detector"
  +url: null
  +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 15
  +favouriteCount: 14
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1689186194 {#1741
    date: 2023-07-12 20:23:14.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#2021 …}
  +votes: Doctrine\ORM\PersistentCollection {#2011 …}
  +reports: Doctrine\ORM\PersistentCollection {#2022 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
  +badges: Doctrine\ORM\PersistentCollection {#2130 …}
  +children: [
    3 => App\Entity\EntryComment {#1612
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688615180 {#1430
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1650 …}
      +nested: Doctrine\ORM\PersistentCollection {#1671 …}
      +votes: Doctrine\ORM\PersistentCollection {#1667 …}
      +reports: Doctrine\ORM\PersistentCollection {#1670 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
      -id: 8526
      -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/875679"
      +editedAt: DateTimeImmutable @1688615248 {#1429
        date: 2023-07-06 05:47:28.0 +02:00
      }
      +createdAt: DateTimeImmutable @1688615180 {#1440
        date: 2023-07-06 05:46:20.0 +02:00
      }
      +"title": 8526
    }
    2 => App\Entity\EntryComment {#1566
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688616233 {#1581
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1548 …}
      +nested: Doctrine\ORM\PersistentCollection {#1550 …}
      +votes: Doctrine\ORM\PersistentCollection {#1562 …}
      +reports: Doctrine\ORM\PersistentCollection {#1554 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
      -id: 8533
      -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/876062"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688616233 {#1564
        date: 2023-07-06 06:03:53.0 +02:00
      }
      +"title": 8533
    }
    1 => App\Entity\EntryComment {#1604
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
        \n
        I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1688980181 {#1620
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1619 …}
      +nested: Doctrine\ORM\PersistentCollection {#1701 …}
      +votes: Doctrine\ORM\PersistentCollection {#1687 …}
      +reports: Doctrine\ORM\PersistentCollection {#1689 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
      -id: 9352
      -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1067182"
      +editedAt: null
      +createdAt: DateTimeImmutable @1688980181 {#1613
        date: 2023-07-10 11:09:41.0 +02:00
      }
      +"title": 9352
    }
    0 => App\Entity\EntryComment {#1611
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
      +image: null
      +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
      +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
      +body: """
        I just want to ask some points:\n
        \n
        - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1689047633 {#1711
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Lazyhotodogu@discuss.tchncs.de"
        "@blarbasaurus@lemmy.world"
        "@Lazyhotodogu@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1630 …}
      +nested: Doctrine\ORM\PersistentCollection {#1628 …}
      +votes: Doctrine\ORM\PersistentCollection {#1599 …}
      +reports: Doctrine\ORM\PersistentCollection {#1625 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
      -id: 10274
      -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.world/comment/1105480"
      +editedAt: null
      +createdAt: DateTimeImmutable @1689047633 {#1616
        date: 2023-07-11 05:53:53.0 +02:00
      }
      +"title": 10274
    }
  ]
  -id: 135
  -titleTs: "'detector':4 'mosfet':1 'radiat':3"
  -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1687237046
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/156149"
  +editedAt: null
  +createdAt: DateTimeImmutable @1687153046 {#1709
    date: 2023-06-19 07:37:26.0 +02:00
  }
  +__isInitialized__: true
   …2
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
5 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
6 DENIED moderate 
App\Entity\EntryComment {#1612
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612}
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688615180 {#1430
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1650 …}
  +nested: Doctrine\ORM\PersistentCollection {#1671 …}
  +votes: Doctrine\ORM\PersistentCollection {#1667 …}
  +reports: Doctrine\ORM\PersistentCollection {#1670 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
  -id: 8526
  -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/875679"
  +editedAt: DateTimeImmutable @1688615248 {#1429
    date: 2023-07-06 05:47:28.0 +02:00
  }
  +createdAt: DateTimeImmutable @1688615180 {#1440
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +"title": 8526
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
7 DENIED edit 
App\Entity\EntryComment {#1612
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612}
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688615180 {#1430
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1650 …}
  +nested: Doctrine\ORM\PersistentCollection {#1671 …}
  +votes: Doctrine\ORM\PersistentCollection {#1667 …}
  +reports: Doctrine\ORM\PersistentCollection {#1670 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
  -id: 8526
  -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/875679"
  +editedAt: DateTimeImmutable @1688615248 {#1429
    date: 2023-07-06 05:47:28.0 +02:00
  }
  +createdAt: DateTimeImmutable @1688615180 {#1440
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +"title": 8526
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
8 DENIED moderate 
App\Entity\EntryComment {#1612
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612}
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688615180 {#1430
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1650 …}
  +nested: Doctrine\ORM\PersistentCollection {#1671 …}
  +votes: Doctrine\ORM\PersistentCollection {#1667 …}
  +reports: Doctrine\ORM\PersistentCollection {#1670 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
  -id: 8526
  -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/875679"
  +editedAt: DateTimeImmutable @1688615248 {#1429
    date: 2023-07-06 05:47:28.0 +02:00
  }
  +createdAt: DateTimeImmutable @1688615180 {#1440
    date: 2023-07-06 05:46:20.0 +02:00
  }
  +"title": 8526
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
9 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
10 DENIED moderate 
App\Entity\EntryComment {#1566
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566}
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688616233 {#1581
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1548 …}
  +nested: Doctrine\ORM\PersistentCollection {#1550 …}
  +votes: Doctrine\ORM\PersistentCollection {#1562 …}
  +reports: Doctrine\ORM\PersistentCollection {#1554 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
  -id: 8533
  -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/876062"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688616233 {#1564
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +"title": 8533
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
11 DENIED edit 
App\Entity\EntryComment {#1566
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566}
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688616233 {#1581
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1548 …}
  +nested: Doctrine\ORM\PersistentCollection {#1550 …}
  +votes: Doctrine\ORM\PersistentCollection {#1562 …}
  +reports: Doctrine\ORM\PersistentCollection {#1554 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
  -id: 8533
  -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/876062"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688616233 {#1564
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +"title": 8533
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
12 DENIED moderate 
App\Entity\EntryComment {#1566
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566}
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688616233 {#1581
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1548 …}
  +nested: Doctrine\ORM\PersistentCollection {#1550 …}
  +votes: Doctrine\ORM\PersistentCollection {#1562 …}
  +reports: Doctrine\ORM\PersistentCollection {#1554 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
  -id: 8533
  -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/876062"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688616233 {#1564
    date: 2023-07-06 06:03:53.0 +02:00
  }
  +"title": 8533
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
13 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
14 DENIED moderate 
App\Entity\EntryComment {#1604
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604}
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
    \n
    I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688980181 {#1620
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1619 …}
  +nested: Doctrine\ORM\PersistentCollection {#1701 …}
  +votes: Doctrine\ORM\PersistentCollection {#1687 …}
  +reports: Doctrine\ORM\PersistentCollection {#1689 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
  -id: 9352
  -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1067182"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688980181 {#1613
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +"title": 9352
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
15 DENIED edit 
App\Entity\EntryComment {#1604
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604}
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
    \n
    I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688980181 {#1620
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1619 …}
  +nested: Doctrine\ORM\PersistentCollection {#1701 …}
  +votes: Doctrine\ORM\PersistentCollection {#1687 …}
  +reports: Doctrine\ORM\PersistentCollection {#1689 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
  -id: 9352
  -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1067182"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688980181 {#1613
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +"title": 9352
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
16 DENIED moderate 
App\Entity\EntryComment {#1604
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604}
      0 => App\Entity\EntryComment {#1611
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          I just want to ask some points:\n
          \n
          - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1689047633 {#1711
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1630 …}
        +nested: Doctrine\ORM\PersistentCollection {#1628 …}
        +votes: Doctrine\ORM\PersistentCollection {#1599 …}
        +reports: Doctrine\ORM\PersistentCollection {#1625 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
        -id: 10274
        -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1105480"
        +editedAt: null
        +createdAt: DateTimeImmutable @1689047633 {#1616
          date: 2023-07-11 05:53:53.0 +02:00
        }
        +"title": 10274
      }
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
    \n
    I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1688980181 {#1620
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1619 …}
  +nested: Doctrine\ORM\PersistentCollection {#1701 …}
  +votes: Doctrine\ORM\PersistentCollection {#1687 …}
  +reports: Doctrine\ORM\PersistentCollection {#1689 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
  -id: 9352
  -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1067182"
  +editedAt: null
  +createdAt: DateTimeImmutable @1688980181 {#1613
    date: 2023-07-10 11:09:41.0 +02:00
  }
  +"title": 9352
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
17 DENIED ROLE_USER 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
18 DENIED moderate 
App\Entity\EntryComment {#1611
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611}
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    I just want to ask some points:\n
    \n
    - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1689047633 {#1711
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1630 …}
  +nested: Doctrine\ORM\PersistentCollection {#1628 …}
  +votes: Doctrine\ORM\PersistentCollection {#1599 …}
  +reports: Doctrine\ORM\PersistentCollection {#1625 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
  -id: 10274
  -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1105480"
  +editedAt: null
  +createdAt: DateTimeImmutable @1689047633 {#1616
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +"title": 10274
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
19 DENIED edit 
App\Entity\EntryComment {#1611
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611}
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    I just want to ask some points:\n
    \n
    - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1689047633 {#1711
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1630 …}
  +nested: Doctrine\ORM\PersistentCollection {#1628 …}
  +votes: Doctrine\ORM\PersistentCollection {#1599 …}
  +reports: Doctrine\ORM\PersistentCollection {#1625 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
  -id: 10274
  -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1105480"
  +editedAt: null
  +createdAt: DateTimeImmutable @1689047633 {#1616
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +"title": 10274
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
20 DENIED moderate 
App\Entity\EntryComment {#1611
  +user: App\Entity\User {#261 …}
  +entry: Proxies\__CG__\App\Entity\Entry {#1583
    +user: Proxies\__CG__\App\Entity\User {#1404 …}
    +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
    +image: null
    +domain: Proxies\__CG__\App\Entity\Domain {#2028 …}
    +slug: "MOSFET-as-Radiation-Detector"
    +title: "MOSFET as Radiation Detector"
    +url: null
    +body: "Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage threshold. BTW, we are using an n-channel MOSFET (model: IRFP250NPbF). Also in the datasheet provided by the manufacturer, it says here VGS(th)/Gate Threshold Voltage Min: 2.0 ––– Max: 4.0 V. There is a condition here with VDS = VGS, ID = 250 A. Does this mean that to measure the VGS, we need to first satisfy the conditions? To measure the voltage threshold, what node will we use to measure the VGS (th)? Is it at the drain to the source terminal or still at the gate to the source terminal? Feel free to share your thoughts, if you have any. I would also like to add that we have already tried to supply a voltage at the gate with respect to the source terminal. We use a 4 V supply voltage, and when we tried to measure the VDS (drain to source voltage), there was a voltage drop, so we've got a 3.5 V. Also, we are using an Arduino to measure its voltage and a multimeter for checking."
    +type: "article"
    +lang: "en"
    +isOc: false
    +hasEmbed: false
    +commentCount: 15
    +favouriteCount: 14
    +score: 0
    +isAdult: false
    +sticky: false
    +lastActive: DateTime @1689186194 {#1741
      date: 2023-07-12 20:23:14.0 +02:00
    }
    +ip: null
    +adaAmount: 0
    +tags: null
    +mentions: null
    +comments: Doctrine\ORM\PersistentCollection {#2021 …}
    +votes: Doctrine\ORM\PersistentCollection {#2011 …}
    +reports: Doctrine\ORM\PersistentCollection {#2022 …}
    +favourites: Doctrine\ORM\PersistentCollection {#2064 …}
    +notifications: Doctrine\ORM\PersistentCollection {#2077 …}
    +badges: Doctrine\ORM\PersistentCollection {#2130 …}
    +children: [
      3 => App\Entity\EntryComment {#1612
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "I’m using lm334z as a current source, i’m still thinking and deciding on where to connect it to the MOSFET. Can you propose the wiring for the current source input once the MOSFET is in diode connection. Like for example, in a breadboard i used a wire to connect the drain and gate. then, i’ve applied a constant current at drain terminal with source connected to the negative. So to check the change in voltage, should i measure the voltage in Gate to source?"
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688615180 {#1430
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1650 …}
        +nested: Doctrine\ORM\PersistentCollection {#1671 …}
        +votes: Doctrine\ORM\PersistentCollection {#1667 …}
        +reports: Doctrine\ORM\PersistentCollection {#1670 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1560 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1585 …}
        -id: 8526
        -bodyTs: "'appli':59 'breadboard':45 'chang':76 'check':74 'connect':18,39,51,68 'constant':61 'current':7,30,62 'decid':14 'diod':38 'drain':53,64 'exampl':42 'gate':55,85 'input':32 'like':40 'lm334z':4 'm':2,10 'measur':81 'mosfet':22,35 'negat':71 'propos':25 'sourc':8,31,67,87 'still':11 'termin':65 'think':12 'use':3,47 've':58 'voltag':78,83 'wire':27,49"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/875679"
        +editedAt: DateTimeImmutable @1688615248 {#1429
          date: 2023-07-06 05:47:28.0 +02:00
        }
        +createdAt: DateTimeImmutable @1688615180 {#1440
          date: 2023-07-06 05:46:20.0 +02:00
        }
        +"title": 8526
      }
      2 => App\Entity\EntryComment {#1566
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1655 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: "Also i’m using a TO-92 package for a MOSFET, so is there any tips on the orientation during the irradiation."
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688616233 {#1581
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1548 …}
        +nested: Doctrine\ORM\PersistentCollection {#1550 …}
        +votes: Doctrine\ORM\PersistentCollection {#1562 …}
        +reports: Doctrine\ORM\PersistentCollection {#1554 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1556 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1555 …}
        -id: 8533
        -bodyTs: "'-92':7 'also':1 'irradi':22 'm':3 'mosfet':11 'orient':19 'packag':8 'tip':16 'use':4"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/876062"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688616233 {#1564
          date: 2023-07-06 06:03:53.0 +02:00
        }
        +"title": 8533
      }
      1 => App\Entity\EntryComment {#1604
        +user: App\Entity\User {#261 …}
        +entry: Proxies\__CG__\App\Entity\Entry {#1583 …2}
        +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
        +image: null
        +parent: Proxies\__CG__\App\Entity\EntryComment {#1596 …}
        +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
        +body: """
          Hello, I have already tried to apply a microampere current (around 40 μA) using only Ohm’s law. I used a 2V input and a resistor in series. However, the LM334z is not working, and I am unsure of the reason for its failure. Will using an input voltage and a resistor in series work just fine?\n
          \n
          I have also measured the Vgs, which reads at around 0.117 mV. What do you think about the measured Vgs? Technically, it should be around these values, right? Considering that there is a very small current.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1688980181 {#1620
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Lazyhotodogu@discuss.tchncs.de"
          "@blarbasaurus@lemmy.world"
          "@Lazyhotodogu@lemmy.world"
        ]
        +children: Doctrine\ORM\PersistentCollection {#1619 …}
        +nested: Doctrine\ORM\PersistentCollection {#1701 …}
        +votes: Doctrine\ORM\PersistentCollection {#1687 …}
        +reports: Doctrine\ORM\PersistentCollection {#1689 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1691 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1795 …}
        -id: 9352
        -bodyTs: "'0.117':68 '2v':22 '40':12 'alreadi':4 'also':60 'appli':7 'around':11,67,82 'consid':86 'current':10,93 'failur':44 'fine':57 'hello':1 'howev':29 'input':23,48 'law':18 'lm334z':31 'measur':61,76 'microamper':9 'mv':69 'ohm':16 'read':65 'reason':41 'resistor':26,52 'right':85 'seri':28,54 'small':92 'technic':78 'think':73 'tri':5 'unsur':38 'use':14,20,46 'valu':84 'vgs':63,77 'voltag':49 'work':34,55 'μa':13"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/1067182"
        +editedAt: null
        +createdAt: DateTimeImmutable @1688980181 {#1613
          date: 2023-07-10 11:09:41.0 +02:00
        }
        +"title": 9352
      }
      0 => App\Entity\EntryComment {#1611}
    ]
    -id: 135
    -titleTs: "'detector':4 'mosfet':1 'radiat':3"
    -bodyTs: "'/gate':82 '2.0':86 '250':99 '3.5':212 '4':186 '4.0':88 'add':164 'alreadi':168 'also':69,161,214 'altern':13 'arduino':219 'ask':48 'btw':58 'channel':65 'check':228 'condit':93,115 'current':47 'datasheet':72 'detector':15 'determin':41 'dose':44 'drain':135,198 'drop':206 'explain':18 'extern':29 'feel':149 'first':112 'free':150 'gate':144,176 'got':210 'hello':1 'help':50 'id':98 'increas':35 'irfp250npbf':68 'irradi':26 'like':162 'm':46 'make':4 'manufactur':76 'max':87 'mean':103 'measur':54,106,117,127,195,221 'min':85 'model':67 'mosfet':10,24,66 'multimet':226 'n':64 'n-channel':63 'need':110 'node':122 'provid':73 'radiat':14,30,43 'respect':178 'satisfi':113 'say':78 'share':152 'sourc':31,138,147,181,200 'still':141 'suppli':171,188 'termin':139,148,182 'th':81,130 'thesi':6 'thought':154 'threshold':34,57,83,120 'tri':169,193 'use':9,39,61,125,184,217 'v':89,187,213 'vds':96,197 've':209 'vgs':80,97,108,129 'voltag':33,56,84,119,173,189,201,205,223 'work':21 'would':160"
    +cross: false
    +upVotes: 0
    +downVotes: 0
    +ranking: 1687237046
    +visibility: "visible             "
    +apId: "https://discuss.tchncs.de/post/156149"
    +editedAt: null
    +createdAt: DateTimeImmutable @1687153046 {#1709
      date: 2023-06-19 07:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1587 …}
  +image: null
  +parent: Proxies\__CG__\App\Entity\EntryComment {#1598 …}
  +root: Proxies\__CG__\App\Entity\EntryComment {#1652 …}
  +body: """
    I just want to ask some points:\n
    \n
    - Do you mean that to properly operate the LM334, we need to apply or reached the threshold voltage of the MOSFET which is around (2 and 4V)? But, i’ve tried to used it (LM334z) as a standalone and still it doesn’t work. maybe the LM334z is the problem hahaha *Regarding the resistor method, What do you think about the measured Vds, Vds=117mV (With an input current of 40uA)? i’m confused with the “how a change in Vds will affect the current” *Isn’t it Vds the parameter required for determining the dose? So if there is a constant current and resistance, how does the radiation affects the MOSFET? Will resistance or current increase upon irradiation leading to an increase in the measured Vds?
    """
  +lang: "en"
  +isAdult: false
  +favouriteCount: 0
  +score: 0
  +lastActive: DateTime @1689047633 {#1711
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +ip: null
  +tags: null
  +mentions: [
    "@Lazyhotodogu@discuss.tchncs.de"
    "@blarbasaurus@lemmy.world"
    "@Lazyhotodogu@lemmy.world"
  ]
  +children: Doctrine\ORM\PersistentCollection {#1630 …}
  +nested: Doctrine\ORM\PersistentCollection {#1628 …}
  +votes: Doctrine\ORM\PersistentCollection {#1599 …}
  +reports: Doctrine\ORM\PersistentCollection {#1625 …}
  +favourites: Doctrine\ORM\PersistentCollection {#1617 …}
  +notifications: Doctrine\ORM\PersistentCollection {#1725 …}
  -id: 10274
  -bodyTs: "'117mv':72 '2':32 '40ua':78 '4v':34 'affect':90,117 'appli':20 'around':31 'ask':5 'chang':86 'confus':81 'constant':109 'current':76,92,110,123 'determin':101 'doesn':49 'dose':103 'hahaha':58 'increas':124,130 'input':75 'irradi':126 'isn':93 'lead':127 'lm334':16 'lm334z':42,54 'm':80 'mayb':52 'mean':10 'measur':69,133 'method':62 'mosfet':28,119 'need':18 'oper':14 'paramet':98 'point':7 'problem':57 'proper':13 'radiat':116 'reach':22 'regard':59 'requir':99 'resist':112,121 'resistor':61 'standalon':45 'still':47 'think':66 'threshold':24 'tri':38 'upon':125 'use':40 'vds':70,71,88,96,134 've':37 'voltag':25 'want':3 'work':51"
  +ranking: 0
  +commentCount: 0
  +upVotes: 0
  +downVotes: 0
  +visibility: "visible             "
  +apId: "https://lemmy.world/comment/1105480"
  +editedAt: null
  +createdAt: DateTimeImmutable @1689047633 {#1616
    date: 2023-07-11 05:53:53.0 +02:00
  }
  +"title": 10274
}
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
21 DENIED ROLE_ADMIN 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
22 DENIED ROLE_MODERATOR 
null
 
"Scheb\TwoFactorBundle\Security\Authorization\Voter\TwoFactorInProgressVoter"
 ACCESS ABSTAIN 
"Symfony\Component\Security\Core\Authorization\Voter\RoleHierarchyVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MagazineVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\OAuth2UserConsentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostCommentVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details