Adcom GFA-555 Feedback DC-Blocking Cap? - diyAudio
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Old 9th July 2009, 03:56 PM   #1
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Default Adcom GFA-555 Feedback DC-Blocking Cap?

Got an original 555 on the bench, and was getting ready to replace the two small caps on the driver board. I noticed the feedback DC blocker is a 47f 100V(!) cap. This is in a place where you'd expect to see a 6.3V or 10V cap, not 100V.

Is there a reasoning here that I'm missing?
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Old 9th July 2009, 04:14 PM   #2
infinia is offline infinia  United States
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Default Re: Adcom GFA-555 Feedback DC-Blocking Cap?

Hi
Adcom probably already had that part on the parts list, so they used it instead, ie without adding another line item. Purchasing in quantity et al. I don't know its your call, but there is something to said about remaining in "stock" condition.
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Old 9th July 2009, 08:31 PM   #3
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Just as likely it was on the prototype I gave them, and they
religiously used the same type.

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Old 9th July 2009, 08:54 PM   #4
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Can't think for themselves?

I got no 47f 100V caps here, but I have some 100f 10V ones. Any reason I should not use them?
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Old 9th July 2009, 09:14 PM   #5
mlloyd1 is offline mlloyd1  United States
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maybe higher voltage ratings implies lower leakage current?

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Old 9th July 2009, 11:25 PM   #6
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Naaaah.

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Old 9th July 2009, 11:39 PM   #7
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use 100uF/47V .......

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Old 10th July 2009, 01:14 AM   #8
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Serbian humor?

Thanks anyway guys.
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Old 10th July 2009, 01:27 AM   #9
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Quote:
Originally posted by EchoWars
Serbian humor?

Thanks anyway guys.

Papa is Serb , too ?

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Old 10th July 2009, 01:43 AM   #10
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I think you missed your calling.
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