Re: Well, I know what's wrong - My brand new NST fried!!

["Garry F." <garryfre-at-pacbell-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Thanks for the url for the picture of the filter.

What I was wondering badly was. What is a MOV??

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, August 22, 2000 9:07 PM
Subject: Re: Well, I know what's wrong - My brand new NST fried!!


> Original poster: Terry Fritz <twftesla-at-uswest-dot-net>
>
> OOUUCH!!!
>
> I too am a "customer" of the 'new NST' market.  I know all to well the
work
> needed...
>
> My, you are a fine intelligent young man!  Why don't you own this
place??....
>
>
> I am the largest Northern Colorado researcher in 'neon sign transformer
> technology'!  I am surprise you lost our file!!  Here is my personal visa
card,
> just charge it here for now....
>
> Tax exempt number...,  Geeez I can never remember that stuff, just add the
> tax.  Our fine governor needs it anyway...
>
> I'll take 10 of them 15/60's, just load them in the trunk of our corporate
Ford
> sedan, with the baby seat, out there...  Do you want me to pull it up to
the
> loading dock next to the Kenworth?...
>
> Well... It is actually good that it is solidly dead and that it is a new
NST.
> The short is probably very local and easy to fix once you get at it.  I
think
> you will have to melt off the tar using one of the various methods and
then
> your will be "home free".  NSTs are very basic transformers and the
problems
> are obvious.  Probably a burnt out sedcondary wire or secondary short that
is
> easy to fix...  This was no doubt caused by over voltage or high
frequencies
> getting to the transformer.  I will point to my protection filter (albeit
post
> mortum) at:
>
> http://users.better-dot-org/tfritz/NSTFilt.jpg
>
> It protects against over voltage and high frequency damage.  An input line
fuse
> is also recommended for total protection of the NST.
>
> Very sorry you are having a hard time in this "hobby".  I hope your were
> looking forward to more than the "typical" challenge ;-))
>
> Cheers,
>
>         Terry
>
>
>
>
> At 07:59 PM 8/22/00 -0700, you wrote:
> >
> > Thanks to the kind advice of someone who told me to test both sides of
the
> > NST for a short, I found one side barely produced a spark.
> >
> > To say I am disgusted, is an understatement. This is the same disease I
> > always dealt with is the NST's frying and is what made me stop coiling
for
> > two decades. It's exactly what I wanted most to avoid in coiling and
well, I
> > think I will be trying a safety gap design.
> >
> > All may not be lost on the NST tho, I have it in the freezer and am
going to
> > freeze it and then run  it for 20 minutes and depot the thing.
> >
> > I also heard I could just put it in the oven and possibly melt the short
IF
> > it is in the tar. Trouble is, I don't remember how long or at what
> > temperature to cook it. Anyone know.
> >
> > If I go ahead and depot the thing I am hoping I can remove the shunts
and get
> > some more current out of it.
> >
> > Maybe depotting will help prevent lessen the chance of future frying.
>
>
>
>