Re: [TCML] Secondary with Carbonized Spots

[Gary Lau <glau1024@xxxxxxxxx>]

The most important thing is - you need to correct the arcing from the
primary.  It's either too close to the secondary, or too high up.

To your repair question, you need to determine if there's any
carbonized stuff under the secondary windings that will short the
turns.  If so, I'm not sure it's worth salvaging.  If not, you may be
able to just scrape and pick at the carbonized surface and clean it
up, and then apply a little polyurethane or epoxy to insulate any
compromised enamel insulation.

Regards,
Gary Lau
MA, USA

On Sat, Apr 10, 2010 at 2:20 PM, Derek Esq. <a_key_move@xxxxxxxxx> wrote:
> Hey all,
>
> I've got an issue that I figure one or more of you has run into before. I have a small coil with a secondary that's about 8" tall that I inherited (not literally). It appears that there is no expoxy or anything coating the secondary. If there is, it's a very light coating. Somewhere nearer to the bottom of the secondary, there are two carbonized spots on the windings. The spots are slightly bigger than a spot made if you took a ball point pen and made a dot on a piece of paper. When I run the coil, I get arcs from the two carbonized spots to the primary. The coil runs fine otherwise with appropriate breakout from the topload.
>
> My question is, what can I do about these carbonized spots? Is there a way to repair them? If not, how can I prevent these spots from arcing over? Or what's the best option?
>
> Thanks for all your help,
>
> Derek
>
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla