GET https://kbin.spritesserver.nl/m/askelectronics@discuss.tchncs.de/t/2309/How-do-you-determine-if-450V-caps-are-in-spec/oldest

Response
200 OK
IP
3.138.123.240
Profiled on
Token
26be31

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 
[
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  "remember_me"
  "App\Security\KbinAuthenticator"
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Listeners

Listener Duration Response 
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 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\ContextListener {#706
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  -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 …}
}
 0.30 ms (none) 
Symfony\Component\Security\Http\Firewall\AuthenticatorManagerListener {#584
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}
 0.00 ms (none) 
Scheb\TwoFactorBundle\Security\Http\Firewall\TwoFactorAccessListener {#582
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  -twoFactorAccessDecider: Scheb\TwoFactorBundle\Security\Authorization\TwoFactorAccessDecider {#581 …}
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Symfony\Component\Security\Http\Firewall\AccessListener {#579
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  -map: Symfony\Component\Security\Http\AccessMap {#722 …}
}
 0.00 ms (none) 
Symfony\Component\Security\Http\Firewall\LogoutListener {#786
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    "csrf_token_id" => "logout"
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  -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

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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 
App\Entity\Entry {#2388
  +user: Proxies\__CG__\App\Entity\User {#1943 …}
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
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      Rules\n
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      \n
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  +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
  +slug: "How-do-you-determine-if-450V-caps-are-in-spec"
  +title: "How do you determine if 450V caps are in spec?"
  +url: null
  +body: """
    **Questions:**\n
    \n
    - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
    - Has digikey shipped me faulty units?\n
    \n
    **Background:**\n
    \n
    I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
    \n
    The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
    \n
    **Method:**\n
    \n
    I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
    \n
    For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
    """
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  +downVotes: 0
  +ranking: 1695478146
  +visibility: "visible             "
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  +editedAt: null
  +createdAt: DateTimeImmutable @1695453146 {#1850
    date: 2023-09-23 09:12:26.0 +02:00
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}
 
"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 
App\Entity\Entry {#2388
  +user: Proxies\__CG__\App\Entity\User {#1943 …}
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
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  +slug: "How-do-you-determine-if-450V-caps-are-in-spec"
  +title: "How do you determine if 450V caps are in spec?"
  +url: null
  +body: """
    **Questions:**\n
    \n
    - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
    - Has digikey shipped me faulty units?\n
    \n
    **Background:**\n
    \n
    I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
    \n
    The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
    \n
    **Method:**\n
    \n
    I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
    \n
    For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
    """
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 ACCESS ABSTAIN 
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 ACCESS ABSTAIN 
"App\Security\Voter\EntryVoter"
 ACCESS DENIED 
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 ACCESS ABSTAIN 
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 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 
App\Entity\Entry {#2388
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    **Questions:**\n
    \n
    - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
    - Has digikey shipped me faulty units?\n
    \n
    **Background:**\n
    \n
    I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
    \n
    The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
    \n
    **Method:**\n
    \n
    I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
    \n
    For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
    """
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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        \n
        Rules\n
        -----\n
        \n
        1: Be nice.\n
        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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    Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
    \n
    Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
    """
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
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    Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
    \n
    Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
    """
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
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    Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
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    Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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      Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
      \n
      Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
      """
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    @gondezee@lemmy.world when you say “plot a frequency sweep” what you’re looking for is just the usual voltage/time graph from a scope? No resistance in parallel to the capacitor for discharge? No fixed resistance in series? No x/y graphing funny business?\n
    \n
    Or are you looking for a bode plot? I was hesitant in my first response because I thought I remembered Dave doing a bode plot with a sweeping gen and a scope, but I wasn’t sure if I could find it. I could [m.youtube.com/watch?v=uMH2hGvqhlE](https://m.youtube.com/watch?v=uMH2hGvqhlE)
    """
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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      Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
      \n
      Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
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    @gondezee@lemmy.world when you say “plot a frequency sweep” what you’re looking for is just the usual voltage/time graph from a scope? No resistance in parallel to the capacitor for discharge? No fixed resistance in series? No x/y graphing funny business?\n
    \n
    Or are you looking for a bode plot? I was hesitant in my first response because I thought I remembered Dave doing a bode plot with a sweeping gen and a scope, but I wasn’t sure if I could find it. I could [m.youtube.com/watch?v=uMH2hGvqhlE](https://m.youtube.com/watch?v=uMH2hGvqhlE)
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      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
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      Well I guess, I’ve got a sweeping function gen and a 4ch DSO… I’m gonna look into that and get back.\n
      \n
      Caveat: my engineering diploma in embedded electronics is 10 years old, and it’s been awhile since I’ve done more than just the odd solder job. So it’s going to take a little while.
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    @gondezee@lemmy.world when you say “plot a frequency sweep” what you’re looking for is just the usual voltage/time graph from a scope? No resistance in parallel to the capacitor for discharge? No fixed resistance in series? No x/y graphing funny business?\n
    \n
    Or are you looking for a bode plot? I was hesitant in my first response because I thought I remembered Dave doing a bode plot with a sweeping gen and a scope, but I wasn’t sure if I could find it. I could [m.youtube.com/watch?v=uMH2hGvqhlE](https://m.youtube.com/watch?v=uMH2hGvqhlE)
    """
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    +body: """
      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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  +body: """
    I think I’ve managed to do what you asked, let me know if I messed it up.\n
    \n
    I got my function gen to do 6.1-12 in two decades x100 and x1000. The sweeps are almost linear after the first 500ms, meaning that each horizontal division of each 200ms denotes the following:\n
    \n
    | Timemark | Frequency |\n
    |---|---|\n
    | 0 | 6.1kHz |\n
    | 200ms | 6.1kHz |\n
    | 400ms | 6.1kHz |\n
    | 600ms | 10.2kHz |\n
    | 800ms | 22.7kHz |\n
    | 1000ms | 36.2kHz |\n
    | 1200ms | 50kHz |\n
    | 1400ms | 64.1kHz |\n
    | 1600ms | 78.1kHz |\n
    | 1800ms | 92.6k |\n
    | 2000ms | 106kHz |\n
    | 2200ms | 119kHz |\n
    \n
    With all that said here’s the data\n
    \n
    Replacement cap 610-12k ![](https://sh.itjust.works/pictrs/image/b1a7479a-8d19-4649-8f5a-45863906eda4.webp)\n
    \n
    Original cap 610-12k ![](https://sh.itjust.works/pictrs/image/bc1d44e9-a580-4ba7-afc6-e9cad9aca6d6.webp)\n
    \n
    Replacement cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/ae7b53dc-5ac2-4ab9-9b30-8e53dd11429c.webp)\n
    \n
    Original cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/a71ac2e8-82da-4b11-8800-e7fd407ae3e3.webp)
    """
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    +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
    +slug: "How-do-you-determine-if-450V-caps-are-in-spec"
    +title: "How do you determine if 450V caps are in spec?"
    +url: null
    +body: """
      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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  +root: App\Entity\EntryComment {#4074}
  +body: """
    I think I’ve managed to do what you asked, let me know if I messed it up.\n
    \n
    I got my function gen to do 6.1-12 in two decades x100 and x1000. The sweeps are almost linear after the first 500ms, meaning that each horizontal division of each 200ms denotes the following:\n
    \n
    | Timemark | Frequency |\n
    |---|---|\n
    | 0 | 6.1kHz |\n
    | 200ms | 6.1kHz |\n
    | 400ms | 6.1kHz |\n
    | 600ms | 10.2kHz |\n
    | 800ms | 22.7kHz |\n
    | 1000ms | 36.2kHz |\n
    | 1200ms | 50kHz |\n
    | 1400ms | 64.1kHz |\n
    | 1600ms | 78.1kHz |\n
    | 1800ms | 92.6k |\n
    | 2000ms | 106kHz |\n
    | 2200ms | 119kHz |\n
    \n
    With all that said here’s the data\n
    \n
    Replacement cap 610-12k ![](https://sh.itjust.works/pictrs/image/b1a7479a-8d19-4649-8f5a-45863906eda4.webp)\n
    \n
    Original cap 610-12k ![](https://sh.itjust.works/pictrs/image/bc1d44e9-a580-4ba7-afc6-e9cad9aca6d6.webp)\n
    \n
    Replacement cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/ae7b53dc-5ac2-4ab9-9b30-8e53dd11429c.webp)\n
    \n
    Original cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/a71ac2e8-82da-4b11-8800-e7fd407ae3e3.webp)
    """
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    +slug: "How-do-you-determine-if-450V-caps-are-in-spec"
    +title: "How do you determine if 450V caps are in spec?"
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    +body: """
      **Questions:**\n
      \n
      - Can you test 450V high ripple current caps with a any old desktop RCL meter?\n
      - Has digikey shipped me faulty units?\n
      \n
      **Background:**\n
      \n
      I’ve gotten a couple of 660uF (not a typo, it’s some weird high ripple current caps for an outdoor AC unit) 450V caps to replace some that I decided were duds. Normally I only measure components when troubleshooting, but this being 20USD with vat devices I thought “what the heck, I better”.\n
      \n
      The caps in question are chemi-con EKHJ451VSN661MA59M [www.digikey.dk/en/products/detail/…/17728502](https://www.digikey.dk/en/products/detail/chemi-con/EKHJ451VSN661MA59M/17728502).\n
      \n
      **Method:**\n
      \n
      I’m using a Phillips PM6303A, which is a 1kHz RCL meter. Ambiant temp is approx 15°C. The caps have a 20% tolerance, so capacity should be >528uF, but when measuring both caps settle at approx 450uF after a little while. After 16hours it hasn’t deviated for the one cap I’ve left in over night. The dissipation factor, tan(δ), settled at 0.57, while the datasheet states that it shall be no greater than 0.2.\n
      \n
      For comparison, the caps I thought was faulty, have been running for about 20years, with the same specs, but came out to 550uF and 0.3, and as the spec said 0.2 I decided to change them.
      """
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  +body: """
    I think I’ve managed to do what you asked, let me know if I messed it up.\n
    \n
    I got my function gen to do 6.1-12 in two decades x100 and x1000. The sweeps are almost linear after the first 500ms, meaning that each horizontal division of each 200ms denotes the following:\n
    \n
    | Timemark | Frequency |\n
    |---|---|\n
    | 0 | 6.1kHz |\n
    | 200ms | 6.1kHz |\n
    | 400ms | 6.1kHz |\n
    | 600ms | 10.2kHz |\n
    | 800ms | 22.7kHz |\n
    | 1000ms | 36.2kHz |\n
    | 1200ms | 50kHz |\n
    | 1400ms | 64.1kHz |\n
    | 1600ms | 78.1kHz |\n
    | 1800ms | 92.6k |\n
    | 2000ms | 106kHz |\n
    | 2200ms | 119kHz |\n
    \n
    With all that said here’s the data\n
    \n
    Replacement cap 610-12k ![](https://sh.itjust.works/pictrs/image/b1a7479a-8d19-4649-8f5a-45863906eda4.webp)\n
    \n
    Original cap 610-12k ![](https://sh.itjust.works/pictrs/image/bc1d44e9-a580-4ba7-afc6-e9cad9aca6d6.webp)\n
    \n
    Replacement cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/ae7b53dc-5ac2-4ab9-9b30-8e53dd11429c.webp)\n
    \n
    Original cap 6.1k-120k ![](https://sh.itjust.works/pictrs/image/a71ac2e8-82da-4b11-8800-e7fd407ae3e3.webp)
    """
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