chipamp.com kit - part substitution question

speakerguy79 · 21st November 2007, 06:54 PM

Can I substitute 47uF 25V Panasonic SU bipolars for the 47uF 50V FC series caps in the feedback path of the chip? I can't see how it would ever see a voltage even close to 25V but maybe I am wrong. This is for the LM3886 amp.

Thanks!

Russ White · 21st November 2007, 09:16 PM

If it ever saw more than 1V or so then there is a serious issue.

A 25V cap should be very conservative.

Cheers!
Russ

speakerguy79 · 22nd November 2007, 05:59 PM

OK, that's what I thought. In that case I'll use the 10V 100uF part that's available in the same case size and push the corner frequency even lower. Thanks!

21st November 2007, 06:54 PM	#1
speakerguy79 diyAudio Member Join Date: May 2006	chipamp.com kit - part substitution question Can I substitute 47uF 25V Panasonic SU bipolars for the 47uF 50V FC series caps in the feedback path of the chip? I can't see how it would ever see a voltage even close to 25V but maybe I am wrong. This is for the LM3886 amp. Thanks!

21st November 2007, 09:16 PM	#2
Russ White diyAudio Member Join Date: Jan 2005 Location: Nashville, TN, USA	If it ever saw more than 1V or so then there is a serious issue. A 25V cap should be very conservative. Cheers! Russ __________________ Less pulp more juice Twisted Pear Audio.

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22nd November 2007, 05:59 PM	#3
speakerguy79 diyAudio Member Join Date: May 2006	OK, that's what I thought. In that case I'll use the 10V 100uF part that's available in the same case size and push the corner frequency even lower. Thanks!

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