Re: mysterious coil failure (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 28 Oct 2007 15:59:34 -0700 (PDT)
From: G Hunter <dogbrain_39560@xxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: mysterious coil failure (fwd)

Look for carbon tracking *inside* the secondary
former.  It may be a very obvious black streak of
charcoal heralded by the harsh scent of burned PVC as
soon as you open the former.  It may be very subtle--a
mere spider web of discoloration requiring careful
snooping with a flashlight to find it. 
Regardless--once the top of the secondary finds a path
to the bottom turns via charred plastic, you might as
well toss the whole secondary and start over.  I hope
I'm wrong!

Greg

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 
> ---------- Forwarded message ----------
> Date: Sat, 27 Oct 2007 22:10:06 -0400
> From: Scott Bogard <teslas-intern@xxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: mysterious coil failure
> 
> 
> Hey guys,
>      I was running my 6-in MOT coil tonight for my
> little cousins, and it
> died and I cannot figure out what is wrong.  The
> spark gap fires fine, I
> did not adjust anything, it just died between runs,
> and won't arc except
> to a grounded rod (it acts like it is badly out of
> tune, but like I said,
> I adjusted nothing).  The only thing different I
> notice, is that there was
> very high humidity, and I could see a tiny spark at
> the base of the
> secondary.  It isn't arcing to anything, it is just
> a glowing spot, that
> melted through the electrical tape insulation.  I'm
> stumped, I guess I'll
> tear the insulation off of the bottom of the sec'
> coil and see if anything
> is amiss, but I've never had a failure like this
> before.  The only other
> possibility is that somehow my ballast
> malfunctioned, but I don't think
> so.
> 
> Scott Bogard.
> 
>
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> 
> 


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