potted transformers - 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 11th November 2004, 07:09 AM   #1
Account Disabled
 
Join Date: Sep 2004
Location: Earth
Question potted transformers

I found some cool boxes that can put a xformer inside and make it like potted. But what is this black material inside a potted xformer that makes it potted?
  Reply With Quote
Old 11th November 2004, 07:28 AM   #2
djQUAN is offline djQUAN  Philippines
diyAudio Member
 
Join Date: May 2004
Location: manila
Send a message via MSN to djQUAN Send a message via Yahoo to djQUAN
I think it's a mixture of sand and epoxy.
  Reply With Quote
Old 11th November 2004, 10:36 AM   #3
mcs is offline mcs  Denmark
diyAudio Member
 
Join Date: Aug 2003
Location: Denmark
But don't pot power transformers. Many of them will overheat. Transformers have to be designed for potting.

Best regards,

Mikkel C. Simonsen
__________________
My personal electronics website
Remote control kits website
  Reply With Quote
Old 11th November 2004, 01:02 PM   #4
Account Disabled
 
Join Date: Sep 2004
Location: Earth
I'd like to pot the OPTs.
  Reply With Quote
Old 11th November 2004, 01:11 PM   #5
diyAudio Member
 
rcavictim's Avatar
 
Join Date: Jun 2004
Location: Next to an open wormhole NW of Toronto
Neon sign xfmers have always used a black tarlike substance. It melts and flows with high heat. Perhaps the hot liquid tar that municipal workers use to patch cracks in asphalt road surfaces would be good for potting output xfmers. I don't like the idea of epoxy for two reasons. It is way too expensive and you cannot get back in and do repairs if ever necessary.
__________________
On April 01,2012, my radioastronomy Project TARGET SETI search succeeded. The signal came via extradimensional subspace, not radio waves. I now get a lot of 'visitors'. I took my avatar pic of one friend watching me in my work yard from just 20 ft. away.
  Reply With Quote
Old 11th November 2004, 01:25 PM   #6
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
You want something that's thermally conductive, doesn't have a terrifically high dielectric constant, has low ionic content, low toxicity and ease of processing, and of course non-magnetic. All signs point to platinum-catalyzed electronic-grade silicones with a high beryllium oxide loading.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 11th November 2004, 01:31 PM   #7
diyAudio Member
 
Carondimonio's Avatar
 
Join Date: Jun 2004
Location: Bern
Quote:
Originally posted by rcavictim
Neon sign xfmers have always used a black tarlike substance. It melts and flows with high heat. Perhaps the hot liquid tar that municipal workers use to patch cracks in asphalt road surfaces would be good for potting output xfmers. I don't like the idea of epoxy for two reasons. It is way too expensive and you cannot get back in and do repairs if ever necessary.
That kind of tar melts at around 200 C; I believe such a temp could damage the OPTs (at least the insulation layers between windings).

Cheers,

Bruno
  Reply With Quote
Old 11th November 2004, 04:02 PM   #8
markp is offline markp  United States
diyAudio Member
 
Join Date: Oct 2003
Location: L.A., CA
You can buy potting compound from most of the larger parts suppliers.
__________________
If it sounds good... it is good!
  Reply With Quote
Old 12th November 2004, 10:46 AM   #9
diyAudio Member
 
Join Date: Nov 2002
Just buy them potted?
  Reply With Quote
Old 12th November 2004, 01:59 PM   #10
Account Disabled
 
Join Date: Sep 2004
Location: Earth
I allready have them!
And those boxes I found where very cool but I'll leave them unpotted.This potting compound is too expensive.I found it at Farnell.It doesn't worth it for two OPTs.
And there's no any difference btw potted and unpotted,anyway.
  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
Potted transformers semitone Tubes / Valves 22 13th January 2008 12:00 AM
Benefits of Potted Output Transformers dsavitsk Tubes / Valves 44 24th December 2007 06:53 AM
lundahl xformers - are they potted? jarthel Tubes / Valves 6 19th May 2006 12:23 PM
removing potted components? cowanrg Parts 10 30th April 2004 09:57 AM
SA-25 NEXUS potted op amp- What is ext pot for? ljordan Everything Else 1 22nd February 2004 10:42 AM


New To Site? Need Help?

All times are GMT. The time now is 12:44 AM.


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