Electrolytic Capacitor Insulation - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 22nd December 2003, 12:48 AM   #1
diyAudio Member
Join Date: Sep 2003
Location: Texas
Default Electrolytic Capacitor Insulation

This may have been discussed already, but I didn't find anything with a quick search.

Is there any data on the insulation value of the plastic on modern electrolytics? I'm thinking of the situation where the can is above ground by a significant voltage (say in a negative supply) and where the capacitor may be in close proximity to grounded components or in contact with the chassis itself, insulated only by the plastic layer.

Thanks for the help.
  Reply With Quote
Old 22nd December 2003, 02:42 AM   #2
SY is offline SY  United States
diyAudio Moderator
SY's Avatar
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 2
I thought that the can was isolated on modern (i.e., non-twistlock) caps. In any case, the plastic layer is way thicker than anything you'll find inside a high voltage film cap, so I wouldn't worry about it too much. It's got to be good for a multiple of the cap's working voltage.
A philosopher is a blind man in a dark room looking for a black cat that isn't there. A theologian is the man who finds it. - Mencken
  Reply With Quote
Old 22nd December 2003, 07:20 AM   #3
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
dhaen's Avatar
Join Date: Jun 2002
Location: U.K.
I would not rely on the plastic film for more than 200v or so. Probably fine for a bias supply
Plastic clips are available now, which I use for higher voltages.
I'm not sure how well isolated the cans can be. In the past I've seen leakage to "isolated cans" that has caused trouble.
  Reply With Quote


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
Electrolytic Output Capacitor Kashmire Pass Labs 30 13th December 2007 10:59 AM
electrolytic capacitor source oldheathkitphil Parts 2 22nd June 2007 08:25 PM
Very Newbie Question - Is this a electrolytic capacitor? zBuff Parts 1 11th July 2006 03:05 AM
electrolytic can capacitor el capitan83 Tubes / Valves 3 18th December 2004 05:01 PM
Input capacitor on zen v2. Electrolytic? Arx Pass Labs 1 14th August 2003 09:20 AM

New To Site? Need Help?

All times are GMT. The time now is 11:38 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2