Just found these... any use in Tripath amps?

Katch · 26th January 2012, 10:47 AM

I just found a pair of these.

5cm x 2.5cm nice looking old school caps.

I'm all new to this amp building business and have just finished a Helder TA2020 MKIII.

Just wondering if these caps could have any application in similar projects?

vmed_cha_gr · 27th January 2012, 10:46 AM

You need fast capacitors for class d amps. Like panasonic fc or sanyo oscon etc... because class d chips need energy & they drain the caps reserved energy fast.
If what you found is for free, i would use them for circuits with voltage regulators & small power supplies.

Katch · 27th January 2012, 11:09 AM

learning something new every day - thanks; and yeah they were free.

Coconuts 500 · 27th January 2012, 12:31 PM

I do believe that electrolytic capacitors degrade, even if they are NOS.

vmed_cha_gr · 27th January 2012, 01:48 PM

correct.

Quote:

Originally Posted by Coconuts 500

I do believe that electrolytic capacitors degrade, even if they are NOS.

sreten · 27th January 2012, 02:12 PM

Hi,

A modern electrolytic 330uF 35V capacitor is ~ 10mm dia, ~ 20mm long.
They are so cheap its not worth using very large old electrolytics.

A modern 3300uF 63V capacitor is about than size.

Really not much use to anyone, except a vintage restorer.

rgds, sreten.

26th January 2012, 10:47 AM	#1
Katch diyAudio Member Join Date: Dec 2011	Just found these... any use in Tripath amps? I just found a pair of these. 5cm x 2.5cm nice looking old school caps. I'm all new to this amp building business and have just finished a Helder TA2020 MKIII. Just wondering if these caps could have any application in similar projects?

27th January 2012, 02:12 PM	#6
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, A modern electrolytic 330uF 35V capacitor is ~ 10mm dia, ~ 20mm long. They are so cheap its not worth using very large old electrolytics. A modern 3300uF 63V capacitor is about than size. Really not much use to anyone, except a vintage restorer. rgds, sreten. __________________ There is nothing so practical as a really good theory - Ludwig Boltzmann When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

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27th January 2012, 10:46 AM	#2
vmed_cha_gr diyAudio Member Join Date: Jun 2009	You need fast capacitors for class d amps. Like panasonic fc or sanyo oscon etc... because class d chips need energy & they drain the caps reserved energy fast. If what you found is for free, i would use them for circuits with voltage regulators & small power supplies.

27th January 2012, 11:09 AM	#3
Katch diyAudio Member Join Date: Dec 2011	learning something new every day - thanks; and yeah they were free.

27th January 2012, 12:31 PM	#4
Coconuts 500 diyAudio Member Join Date: Apr 2010	I do believe that electrolytic capacitors degrade, even if they are NOS.