Re: NST rebuilds

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Allanh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <allanh-at-starband-dot-net>

In my limited experience with NST's, I've found the same
thing that other coilers have, if the NST has no output, and an ohmeter
check shows normal resistance of the sec.to ground( same as a working NST)
then the problem is usually  carbon tracking and heating my repair it.. If
the resistance is anything other than "normal", i.e. open or shorted, then
repair is more difficult or impossible.

hope this helps.

allan

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, July 17, 2002 7:13 AM
Subject: NST rebuilds


>
> Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<srward16-at-hotmail-dot-com>
>
> HI,
>
> Ive rebuilt transformers before and had success with each(I knew what was
> wrong with each tranformer, ie, i blew them with a TC).  Recently, i
picked
> up about 15 busted transformers at a sign shop.  Unfortunately my friend
was
> there earlier and took most of the 60 ma units.  But anyways, i was
noteing
> some test results with just testing the transformers(if youre lucky some
> will work! i was lucky with one).  So here are some characteristics of
these
> transformers.  All of them are magnetek(jefferson), or france.
>
> 1.  One or both windings show no sign of arcing.
>
> 2.  One side or both show very weak tiny sparks(1/20").
>
> 3.  One side is strong, the other dead or very weak.
>
> 4.  or a combo of any of these.
>
>
> Now, im wondering if anyone can tell me whether or not these are signs of
a
> good rebuild(tar broke down), or a bad pointless rebuild(winding broken
> down).  Id really love if i can get a few of these 15/60s working again.
So
> far ive been working on an Allonson 15/30, for a smaller coil and for
> practice.  Also, does anyone know if a broken down winding has any
specific
> characteristics??  Any other info anyone can give will be helpful.
>
> Steve Ward.
>
>
>
>