SIR #36 Cap question

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lgehrig4
Posts: 228
Joined: Sun Aug 27, 2006 8:46 pm

SIR #36 Cap question

Post by lgehrig4 »

I'm modding a 2204 clone to #36 and I have a question about this 16u cap. I only see the cap in this layout, but not the schematics. What does it do and if its a good idea to include this, do you think 10u or 22uf in place of 16u would do fine? I don't have a 16u :)
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Roe
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Re: SIR #36 Cap question

Post by Roe »

yes a hi-gain amp needs proper filtering indeed. 10-22uf is fine really.
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Stevem
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Re: SIR #36 Cap question

Post by Stevem »

A good rule of thumb for a high gain amp is to not have any more then two gain stages powered off of just one filter node.

Use the 22 uf .
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lgehrig4
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Re: SIR #36 Cap question

Post by lgehrig4 »

Thank you both!
lgehrig4
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Re: SIR #36 Cap question

Post by lgehrig4 »

One last question. What would the minimum voltage rating for this cap? I just realized that the one I have is 25v
syscokid
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Re: SIR #36 Cap question

Post by syscokid »

450v to 500v
Greg
syscokid
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Re: SIR #36 Cap question

Post by syscokid »

lgehrig4 wrote: Tue May 27, 2025 1:18 pm One last question. What would the minimum voltage rating for this cap? I just realized that the one I have is 25v
450v to 500v
Greg
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Re: SIR #36 Cap question

Post by syscokid »

Double post!!
Greg
syscokid
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Re: SIR #36 Cap question

Post by syscokid »

Triple post!! I’m on a roll this morning with too strong coffee!
Greg
lgehrig4
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Re: SIR #36 Cap question

Post by lgehrig4 »

Thank you! I ended up finding a 16u 500 F&T in my stash. Larger than I planned for but I found a nice spot on the side chassis wall.
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