GET https://kbin.spritesserver.nl/index.php/u/@Max_P@lemmy.max-p.me/active/2023-10-25::2023-10-25

Response
200 OK
IP
216.73.216.122
Profiled on
Token
193a5e

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 …}
}
 6.10 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 …}
}
 1.78 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 {#1560
  +user: Proxies\__CG__\App\Entity\User {#2467 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1618 …}
  +slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
  +title: "How to Dimension a Power Supply for an Audio Amplifier ?"
  +url: null
  +body: """
    Hi,\n
    \n
    I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
    \n
    The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
    \n
    Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
    \n
    Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
    \n
    It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
    \n
    Best, N
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 7
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1698276158 {#1716
    date: 2023-10-26 01:22:38.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1625 …}
  +votes: Doctrine\ORM\PersistentCollection {#1617 …}
  +reports: Doctrine\ORM\PersistentCollection {#1723 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2378 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2377 …}
  +badges: Doctrine\ORM\PersistentCollection {#1874 …}
  +children: [
    App\Entity\EntryComment {#1675
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1560 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
      +image: null
      +parent: null
      +root: null
      +body: """
        There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
        \n
        CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
        \n
        It should come with specs as to what input it can take. Follow the recommendations. If it says DC give it DC unless you’re absolutely sure of the circuit in there. The presence of a rectifier and caps doesn’t tell you much given it’s an amplifier, it could be part of the amp circuit for the MOSFETs and not its power supply.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 2
      +score: 0
      +lastActive: DateTime @1698217050 {#1610
        date: 2023-10-25 08:57:30.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@megrania@discuss.tchncs.de"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1559 …}
      +nested: Doctrine\ORM\PersistentCollection {#1567 …}
      +votes: Doctrine\ORM\PersistentCollection {#1561 …}
      +reports: Doctrine\ORM\PersistentCollection {#1528 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1562 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1582 …}
      -id: 70502
      -bodyTs: "'120':40 '12v':58 '20a':71 '80':33 '90':35 'absolut':135 'account':19 'adjust':77 'also':16 'amp':165 'amplifi':158 'batteri':95,108 'best':30 'cap':148 'case':43 'cc':64 'charg':96 'charger':109 'circuit':139,166 'come':112 'common':90 'constant':53 'could':160 'current':68 'curv':23 'cv':47 'dc':128,131 'doesn':149 'dynam':76 'effici':22,31 'follow':122 'give':129 'given':154 'go':11 'guess':101 'handl':39 'input':118 'less':89 'limit':67 'littl':13 'load':34,36 'loss':4 'lot':88 'match':82 'momentarili':41 'mosfet':169 'much':153 'need':17 'output':56,80 'overcurr':62 'part':162 'plug':104 'power':26,48,173 'presenc':143 'process':7 're':134 'recommend':124 'rectifi':146 'say':57,70,127 'spec':114 'spike':46 'standard':52 'suppli':27,49,65,174 'sure':136 'take':121 'target':84 'tell':151 'testing/troubleshooting':98 'trip':60 'unless':132 'use':93 'usual':92 'voltag':54,79 'would':66"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1280871"
      +editedAt: null
      +createdAt: DateTimeImmutable @1698215989 {#1615
        date: 2023-10-25 08:39:49.0 +02:00
      }
      +"title": 70502
    }
  ]
  -id: 7620
  -titleTs: "'amplifi':10 'audio':9 'dimens':3 'power':5 'suppli':6"
  -bodyTs: "'300va':86 '300w':84 '680w':72 '8':14,70 '85w':33,71 'add':65 'also':87 'amp':23 'amplifi':10,16 'away':77 'base':25 'best':138 'bit':47 'bought':4 'cap':127 'cc':99 'channel':15 'chip':29 'circuit':106 'could':74,131 'cv':96 'field':55 'get':76 'hi':1 'instal':21 'integr':128 'isn':50 'kill':104 'like':82,119 'look':38,118 'lost':48 'm':37,45 'made':9 'mean':109 'mild':59 'modul':11,121 'n':139 'need':63,93 'nomin':34 'output':68 'potenti':132 'power':41,69,97 'pre':8 'pre-mad':7 'project':17 'put':57 'rate':32 'realli':52 'recent':3 'rectifi':124 'right':137 'said':90 'seller':89 'smaller':81 'smooth':126 'someth':80 'sound':20 'strongest':54 'suppli':42,98,112 'switch':111 'tda7294':28 'transform':136 'use':79,95,116,134 'won':100 'work':102"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1698255466
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/5265073"
  +editedAt: null
  +createdAt: DateTimeImmutable @1698215466 {#1665
    date: 2023-10-25 08:31:06.0 +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 {#1560
  +user: Proxies\__CG__\App\Entity\User {#2467 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1618 …}
  +slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
  +title: "How to Dimension a Power Supply for an Audio Amplifier ?"
  +url: null
  +body: """
    Hi,\n
    \n
    I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
    \n
    The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
    \n
    Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
    \n
    Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
    \n
    It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
    \n
    Best, N
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 7
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1698276158 {#1716
    date: 2023-10-26 01:22:38.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1625 …}
  +votes: Doctrine\ORM\PersistentCollection {#1617 …}
  +reports: Doctrine\ORM\PersistentCollection {#1723 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2378 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2377 …}
  +badges: Doctrine\ORM\PersistentCollection {#1874 …}
  +children: [
    App\Entity\EntryComment {#1675
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1560 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
      +image: null
      +parent: null
      +root: null
      +body: """
        There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
        \n
        CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
        \n
        It should come with specs as to what input it can take. Follow the recommendations. If it says DC give it DC unless you’re absolutely sure of the circuit in there. The presence of a rectifier and caps doesn’t tell you much given it’s an amplifier, it could be part of the amp circuit for the MOSFETs and not its power supply.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 2
      +score: 0
      +lastActive: DateTime @1698217050 {#1610
        date: 2023-10-25 08:57:30.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@megrania@discuss.tchncs.de"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1559 …}
      +nested: Doctrine\ORM\PersistentCollection {#1567 …}
      +votes: Doctrine\ORM\PersistentCollection {#1561 …}
      +reports: Doctrine\ORM\PersistentCollection {#1528 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1562 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1582 …}
      -id: 70502
      -bodyTs: "'120':40 '12v':58 '20a':71 '80':33 '90':35 'absolut':135 'account':19 'adjust':77 'also':16 'amp':165 'amplifi':158 'batteri':95,108 'best':30 'cap':148 'case':43 'cc':64 'charg':96 'charger':109 'circuit':139,166 'come':112 'common':90 'constant':53 'could':160 'current':68 'curv':23 'cv':47 'dc':128,131 'doesn':149 'dynam':76 'effici':22,31 'follow':122 'give':129 'given':154 'go':11 'guess':101 'handl':39 'input':118 'less':89 'limit':67 'littl':13 'load':34,36 'loss':4 'lot':88 'match':82 'momentarili':41 'mosfet':169 'much':153 'need':17 'output':56,80 'overcurr':62 'part':162 'plug':104 'power':26,48,173 'presenc':143 'process':7 're':134 'recommend':124 'rectifi':146 'say':57,70,127 'spec':114 'spike':46 'standard':52 'suppli':27,49,65,174 'sure':136 'take':121 'target':84 'tell':151 'testing/troubleshooting':98 'trip':60 'unless':132 'use':93 'usual':92 'voltag':54,79 'would':66"
      +ranking: 0
      +commentCount: 0
      +upVotes: 0
      +downVotes: 0
      +visibility: "visible             "
      +apId: "https://lemmy.max-p.me/comment/1280871"
      +editedAt: null
      +createdAt: DateTimeImmutable @1698215989 {#1615
        date: 2023-10-25 08:39:49.0 +02:00
      }
      +"title": 70502
    }
  ]
  -id: 7620
  -titleTs: "'amplifi':10 'audio':9 'dimens':3 'power':5 'suppli':6"
  -bodyTs: "'300va':86 '300w':84 '680w':72 '8':14,70 '85w':33,71 'add':65 'also':87 'amp':23 'amplifi':10,16 'away':77 'base':25 'best':138 'bit':47 'bought':4 'cap':127 'cc':99 'channel':15 'chip':29 'circuit':106 'could':74,131 'cv':96 'field':55 'get':76 'hi':1 'instal':21 'integr':128 'isn':50 'kill':104 'like':82,119 'look':38,118 'lost':48 'm':37,45 'made':9 'mean':109 'mild':59 'modul':11,121 'n':139 'need':63,93 'nomin':34 'output':68 'potenti':132 'power':41,69,97 'pre':8 'pre-mad':7 'project':17 'put':57 'rate':32 'realli':52 'recent':3 'rectifi':124 'right':137 'said':90 'seller':89 'smaller':81 'smooth':126 'someth':80 'sound':20 'strongest':54 'suppli':42,98,112 'switch':111 'tda7294':28 'transform':136 'use':79,95,116,134 'won':100 'work':102"
  +cross: false
  +upVotes: 0
  +downVotes: 0
  +ranking: 1698255466
  +visibility: "visible             "
  +apId: "https://discuss.tchncs.de/post/5265073"
  +editedAt: null
  +createdAt: DateTimeImmutable @1698215466 {#1665
    date: 2023-10-25 08:31:06.0 +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 {#1560
  +user: Proxies\__CG__\App\Entity\User {#2467 …}
  +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
  +image: null
  +domain: Proxies\__CG__\App\Entity\Domain {#1618 …}
  +slug: "How-to-Dimension-a-Power-Supply-for-an-Audio-Amplifier"
  +title: "How to Dimension a Power Supply for an Audio Amplifier ?"
  +url: null
  +body: """
    Hi,\n
    \n
    I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
    \n
    The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
    \n
    Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
    \n
    Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
    \n
    It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
    \n
    Best, N
    """
  +type: "article"
  +lang: "en"
  +isOc: false
  +hasEmbed: false
  +commentCount: 7
  +favouriteCount: 3
  +score: 0
  +isAdult: false
  +sticky: false
  +lastActive: DateTime @1698276158 {#1716
    date: 2023-10-26 01:22:38.0 +02:00
  }
  +ip: null
  +adaAmount: 0
  +tags: null
  +mentions: null
  +comments: Doctrine\ORM\PersistentCollection {#1625 …}
  +votes: Doctrine\ORM\PersistentCollection {#1617 …}
  +reports: Doctrine\ORM\PersistentCollection {#1723 …}
  +favourites: Doctrine\ORM\PersistentCollection {#2378 …}
  +notifications: Doctrine\ORM\PersistentCollection {#2377 …}
  +badges: Doctrine\ORM\PersistentCollection {#1874 …}
  +children: [
    App\Entity\EntryComment {#1675
      +user: App\Entity\User {#261 …}
      +entry: Proxies\__CG__\App\Entity\Entry {#1560 …2}
      +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
      +image: null
      +parent: null
      +root: null
      +body: """
        There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
        \n
        CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
        \n
        It should come with specs as to what input it can take. Follow the recommendations. If it says DC give it DC unless you’re absolutely sure of the circuit in there. The presence of a rectifier and caps doesn’t tell you much given it’s an amplifier, it could be part of the amp circuit for the MOSFETs and not its power supply.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 2
      +score: 0
      +lastActive: DateTime @1698217050 {#1610
        date: 2023-10-25 08:57:30.0 +02:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@megrania@discuss.tchncs.de"
      ]
      +children: Doctrine\ORM\PersistentCollection {#1559 …}
      +nested: Doctrine\ORM\PersistentCollection {#1567 …}
      +votes: Doctrine\ORM\PersistentCollection {#1561 …}
      +reports: Doctrine\ORM\PersistentCollection {#1528 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1562 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1582 …}
      -id: 70502
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    +title: "How to Dimension a Power Supply for an Audio Amplifier ?"
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      Hi,\n
      \n
      I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
      \n
      The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
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      Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
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      \n
      It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
      \n
      Best, N
      """
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    There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
    \n
    CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
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    """
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    +title: "How to Dimension a Power Supply for an Audio Amplifier ?"
    +url: null
    +body: """
      Hi,\n
      \n
      I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
      \n
      The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
      \n
      Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
      \n
      Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
      \n
      It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
      \n
      Best, N
      """
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  +magazine: Proxies\__CG__\App\Entity\Magazine {#1548 …}
  +image: null
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    There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
    \n
    CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
    \n
    It should come with specs as to what input it can take. Follow the recommendations. If it says DC give it DC unless you’re absolutely sure of the circuit in there. The presence of a rectifier and caps doesn’t tell you much given it’s an amplifier, it could be part of the amp circuit for the MOSFETs and not its power supply.
    """
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      Hi,\n
      \n
      I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).\n
      \n
      The amp is based on the TDA7294 chip and is rated 85W nominal. Now I’m looking for a power supply, but I’m a bit lost (this isn’t really my strongest field, to put it mildly).\n
      \n
      Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?\n
      \n
      Also, the seller said that you need to use CV power supplies, CC won’t work and kill the circuit. Does that mean a switching supply can’t be used?\n
      \n
      It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?\n
      \n
      Best, N
      """
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    There will be loss in the process so you should go a little above. You also need to account for the efficiency curve of your power supply: is it best efficient at 80% load? 90% load? Can it handle 120% momentarily in case of a spike?\n
    \n
    CV power supplies are the standard: constant voltage. It outputs say 12V, and trips when overcurrent. A CC supply would limit current to say, 20A. It does so by dynamically adjusting the voltage output to match that target. That’s a lot less common and usually used for battery charging or testing/troubleshooting. So, I guess, don’t plug it on a battery charger.\n
    \n
    It should come with specs as to what input it can take. Follow the recommendations. If it says DC give it DC unless you’re absolutely sure of the circuit in there. The presence of a rectifier and caps doesn’t tell you much given it’s an amplifier, it could be part of the amp circuit for the MOSFETs and not its power supply.
    """
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"App\Security\Voter\EntryCommentVoter"
 ACCESS DENIED 
"App\Security\Voter\EntryVoter"
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"App\Security\Voter\MagazineVoter"
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"App\Security\Voter\MessageThreadVoter"
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"App\Security\Voter\MessageVoter"
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"App\Security\Voter\NotificationVoter"
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"App\Security\Voter\OAuth2UserConsentVoter"
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"App\Security\Voter\PostCommentVoter"
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"App\Security\Voter\PostVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\UserVoter"
 ACCESS ABSTAIN
Show voter details
9 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"
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"App\Security\Voter\EntryVoter"
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"App\Security\Voter\MagazineVoter"
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"App\Security\Voter\MessageThreadVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\MessageVoter"
 ACCESS ABSTAIN 
"App\Security\Voter\NotificationVoter"
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"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 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