|[AMRadio] Oil filled capacitors and power transformers|
Foltarz at rocketmail.com
Mon May 19 17:09:32 EDT 2008
I used a good amount of JB weld to cure the leak on the PA plate transformer on my T-368.
The leak occured at the bottom of the conical shaped, HV insulators.
I had considered moiunting upside down, but there is certainly not enough room to do that in the T3.
I was starting to look for another transformer, and then someone suggested JB weld.
Yes, it does have iron in it, but I have it on the base on the insulators.
The total insulation path has been reduces by less than an 1/8 th of an inch
Been working on the transmitter with full plate power on and off for a few weeks now.
No arcing or problems of any sort and no leak either.
----- Original Message ----
From: Rick Brashear <rickb at tx.rr.com>
To: Discussion of AM Radio in the Amateur Service <amradio at mailman.qth.net>
Sent: Monday, May 19, 2008 4:23:18 PM
Subject: RE: [AMRadio] Oil filled capacitors
That's interesting. I honestly don't think it would matter either way. The
area that is leaking is on the bottom of a 1" insulator, so the adhesive
will be no closer to the center conductor than will be the metal case. I
sure appreciate all the help guys.
> JB Weld does not contain any form of metal. ..................
The MSDS shows that the resin portion of the original J-B Weld contains
10-20% iron filings.
I wouldn't use it for this application.
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