High Voltage Power Supply Caps - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

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

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
Reply
 
Thread Tools Search this Thread
Old 3rd September 2005, 04:47 AM   #11
Bryan is offline Bryan  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Reading MA
I am aware about the series application of the caps, but if I were to do so, the highest value I can source is 60uF. In series, two caps would only give me 30uF, and I am looking for something in the 100uF range....

Thoughts?

BK
__________________
Dont take life too seriously, you will never get out alive!
  Reply With Quote
Old 3rd September 2005, 06:43 AM   #12
diyAudio Member
 
astouffer's Avatar
 
Join Date: Jun 2004
Location: Pittsburgh, crumbling wasteland
Default 88uf 1200VDC

Look at the surplus sites for these 88uF 1200VDC caps. Everyone was selling them for a while. I bought two for $14 each from Herbach Rademan a few years ago. Beware the cans are square and about a foot high with inch long ceramic terminal lugs. That or you can series wire 600v motor run caps. I bought the giant caps for power supply testing. Its nice not having to worry about exceeding the voltage.

Just watch the terminals. Shorting a fully charged one would probably melt a screwdriver
  Reply With Quote
Old 4th September 2005, 03:20 AM   #13
diyAudio Member
 
tubelab.com's Avatar
 
Join Date: Jul 2005
Location: West Virginia panhandle
I have a friend who works in the medical equipment repair field. He has become an excellent source of high voltage caps. There is a lot of old equipment that is no longer certifiable for use in the USA. Much of it is exported (to the Caribean) or used in veternary medicine.

Two good sources that do not get used in veternary medicine are electrosurgery machines, and defibrillators. The cap in my 845SE came from an electrosurgery machine. It is 4uF 2500 volt. The cap that is going in the 833A SE is 16uF 7.5 KV. Both are paper in oil. Some defibrillators had 30uF at 4KV caps. Often these machines can be purchased for their scrap value. I got buth machines for $10. The electrosurgery unit had 2 813 tubes in it. The defib caps are rated for pulse discharge and thus have a low ESR, and a low inductance. This makes them excellent for tube amps.

I use electrolytics for the input cap and PIO caps after the choke. This is a good compromise.
__________________
Too much power is almost enough! Turn it up till it explodes - then back up just a little.
  Reply With Quote
Old 4th September 2005, 04:14 AM   #14
Bryan is offline Bryan  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Reading MA
I've been onto that... Looking at the defib caps. I can see that Aerovox has some, but if will I be able to get my hands on them is the question.....?
__________________
Dont take life too seriously, you will never get out alive!
  Reply With Quote
Old 4th September 2005, 08:31 AM   #15
diyAudio Member
 
georgehifi's Avatar
 
Join Date: Sep 2003
Location: Manly Australia (Jewel of the Pacific)
Send a message via MSN to georgehifi
I'm running 900v anodes, on my 805 monoblocks and have found JJ caps great, and also sounded better than the Nichicons that I removed, check the link below, and they are very good value if purchased direct from JJ Canada.

http://www.jj-electronic.com/pdf/TC_TE.pdf

Cheers George
__________________
Avatar : Production Lightspeed Attenuator
www.lightspeedattenuator.com
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
high frequency high voltage power supply... moray james Planars & Exotics 6 23rd July 2008 08:57 PM
Low Voltage High Power Supply thndr Power Supplies 4 2nd February 2008 01:33 PM
high voltage power supply leemajcool Power Supplies 3 5th August 2007 12:40 PM


New To Site? Need Help?

All times are GMT. The time now is 04:31 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2