Go Back   Home > Forums > >

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

PSU capacitors/electrolytics
PSU capacitors/electrolytics
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools
Old 17th March 2006, 07:07 AM   #1
knubie is offline knubie  Norway
diyAudio Member
knubie's Avatar
Join Date: Jun 2005
Location: Bergen
Default PSU capacitors/electrolytics

Haven't heard much talk of this. Need to source capacitors for power amp for a "normal" CRCRC type PSU. I've heard JJ Electronics makes good electrolytics, what else do you guys recommend...
  Reply With Quote
Old 17th March 2006, 07:58 AM   #2
arnoldc is offline arnoldc  Philippines
diyAudio Member
Join Date: Apr 2003
Location: Makati
Send a message via Yahoo to arnoldc
What I've used...

1. Nichicon Muse
2. Sprague Atom
3. Panasonic TSHA, TSHB
4. Rubycon
5. Audio Professor (Japan)
6. Siemens Oil Capacitor in large cans
7. Solen
8. Run of the mill Taiwan Electrolytics
  Reply With Quote
Old 17th March 2006, 07:59 AM   #3
lndm is offline lndm  Australia
diyAudio Member
Join Date: Mar 2006
Location: nsw
You might look at motor start capacitors. They are not electrolytic, they are paper or polypropylene and foil. They handle hundreds of volts and are cheap. Their only downfall is they are 10cm high.
  Reply With Quote
Old 17th March 2006, 08:34 AM   #4
SHiFTY is offline SHiFTY  New Zealand
diyAudio Member
SHiFTY's Avatar
Join Date: Jul 2002
Location: New Zealand
I have used the JJs, they seem to be just fine. Also the Sprague atoms are good, but quite large.

You can also use Solen film caps, they are supposed to be good, but really large.
  Reply With Quote
Old 17th March 2006, 03:16 PM   #5
blacklight is offline blacklight  Finland
diyAudio Member
Join Date: Feb 2006
Location: you tell me
I'm going to experiment with both JJs and oils when my budget allows me to buy all of them at once. As far as electrolytics go, JJs seem pretty cheap to me (about half the price of Jensen electrolytics). As far as I know, Solens are basically relabeled SCRs (which I'm currently using as signal caps). However, large value high voltage SCRs are hard to get where I live. 10uF/630V seems to be the largest I can buy off the shelf. I ripped off a couple of 2100V .77uF oil caps out of an old microwave oven but haven't tried those yet, since they're so low value. According to schematics my PSU's first cap should be around 15-40uF and the rest are around 47uF. It's a slightly modified Fi Primer/Sun Audio/Je Labs/Walton 300B SE. All recommendations are welcome. And yes, the signal caps will be Jensen PIOs.
  Reply With Quote
Old 17th March 2006, 03:19 PM   #6
andyjevans is offline andyjevans  United Kingdom
diyAudio Member
Join Date: Sep 2003
Location: London
You might look at motor start capacitors. >>

Motor run rather than motor start (which can have added componants I believe).

Agree with motor runs - great sound. Fast, clean and detailed
  Reply With Quote
Old 17th March 2006, 04:16 PM   #7
kevinkr is offline kevinkr  United States
diyAudio Moderator
kevinkr's Avatar
Join Date: Sep 2004
Location: Boston, Massachusetts
PSU capacitors/electrolytics
Solen is the SCR brand in North America. Good, inexpensive capacitor I highly recommend for power supply use. Get them directly from Solen in Quebec and they will not cost that much more than the much shorter lived electrolytics you are contemplating.

ASC motor run capacitors make great supply and cathode bypass cap, the series of most interest to audiophiles typical is the X386S in cylindrical aluminum cans. Larger values are typically about the size of a beer can so you need to plan accordingly.

Properly used not too close to their ratings a film cap will outlast you.

Incidentally most of these types are metallized polypropylene, film and foil types would be even larger and aren't self healing in the event of a fault. Great as a coupling cap, perhaps not as good in a psu.
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 18th March 2006, 02:26 AM   #8
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator Emeritus
TonyTecson's Avatar
Join Date: May 2003
Location: Maybunga, Pasig City
I get my NICHICON's, ELNA's and other japanese electolytics from discarded smps boards, rated for 105*C, same with motor run caps, they are very good and cheap to acquire, you just have to be good at hunting them from junkyards which sells those boards on a per kilo basis, they are a steal.
  Reply With Quote
Old 19th March 2006, 02:20 AM   #9
Marlowe is offline Marlowe
diyAudio Member
Join Date: Feb 2003
Black Gate WKZ and VK are unbelievable.
Here's looking at you, kid.
  Reply With Quote
Old 22nd March 2006, 01:59 PM   #10
knubie is offline knubie  Norway
diyAudio Member
knubie's Avatar
Join Date: Jun 2005
Location: Bergen
Thanks for all the info guys! Much appreciated!

I guess JJ, Solen and Jensen +++ are all decent inexpensive alternatives.
ASC Motor run seems promising if I want to try one step up...

And as said Black Gate are unbelievable, including price... I will have to sell my soul to the devil for this lot !!!!

Another capacitor question regarding CRC PSU.
My mains transformer is 440V with a bridge recitifier (diode 1N4007).
Is a 600 VDC capacitor rating enough for the smooting caps?

Is there any rule for this voltage rating except that capacitor should be able to survive +/-15% mains voltage swing?
  Reply With Quote


PSU capacitors/electrolyticsHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Old electrolytics never die, they only.... Pbassred Solid State 13 9th October 2010 12:55 PM
Inundated Electrolytics mach1 Parts 6 24th November 2008 01:15 PM
ARC D90 needs new electrolytics Pete22 Tubes / Valves 9 3rd August 2006 11:31 PM
Electrolytics 101 Frazzled Parts 3 21st May 2004 01:49 AM
Capacitors for digital circuits- Tants vs electrolytics Dr.H Digital Source 7 12th February 2003 03:21 PM

New To Site? Need Help?

All times are GMT. The time now is 12:00 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio