What Size/Type of PS Bypass caps

skip_scratch · 20th December 2006, 06:57 PM

Hello

The power supply for my amp has quantity 4 of 15000uF caps in it. I'd like to try some power supply bypass capacitors.

What type of capacitor and value of capaitor should I use?

/.c

Minion · 20th December 2006, 07:18 PM

Bypass caps are generally Poly Film or polypropaline or Polyester or Polystyrene or Mylar, any Poly type Cap of the Largest Value you can fit (Usually between 0.1uF and 1uF) but larger the better and Poly Film or mylar caps are the smallest so they would probably be the best choise as you can get larger Values in smaller Packages....

Wima Caps are Popular and reasonably priced....

Cheers

djk · 21st December 2006, 11:00 AM

"The power supply for my amp has quantity 4 of 15000uF caps in it. I'd like to try some power supply bypass capacitors."

A dual mono design with two 15,000µF per channel?

Try between 22µF~47µF of a high quality electrolytic right on top of the big cans.

Then try between 0.1µF~1µF as close to where the power is consumed. The grounds must return to where the star ground is. These may need a small value resistor in series with them, around 0R5. You may want to omit these caps if you can't get them orientated properly.

20th December 2006, 06:57 PM	#1
skip_scratch diyAudio Member Join Date: Apr 2006 Location: Toronto	What Size/Type of PS Bypass caps Hello The power supply for my amp has quantity 4 of 15000uF caps in it. I'd like to try some power supply bypass capacitors. What type of capacitor and value of capaitor should I use? /.c

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20th December 2006, 07:18 PM	#2
Minion diyAudio Member Join Date: May 2006	Bypass caps are generally Poly Film or polypropaline or Polyester or Polystyrene or Mylar, any Poly type Cap of the Largest Value you can fit (Usually between 0.1uF and 1uF) but larger the better and Poly Film or mylar caps are the smallest so they would probably be the best choise as you can get larger Values in smaller Packages.... Wima Caps are Popular and reasonably priced.... Cheers

21st December 2006, 11:00 AM	#3
djk diyAudio Member Join Date: Feb 2001 Location: USA	"The power supply for my amp has quantity 4 of 15000uF caps in it. I'd like to try some power supply bypass capacitors." A dual mono design with two 15,000µF per channel? Try between 22µF~47µF of a high quality electrolytic right on top of the big cans. Then try between 0.1µF~1µF as close to where the power is consumed. The grounds must return to where the star ground is. These may need a small value resistor in series with them, around 0R5. You may want to omit these caps if you can't get them orientated properly.

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