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Post-toasted neon



Subject: 
        Re: Post-toasted neon (fwd)

From: Open Minded <unknown-at-apc-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Post-toasted neon

Tesla List wrote:
> 
> Subject:
>         Post-toasted neon
>   Date:
>         Tue, 18 Mar 1997 11:42:47 -0500 (EST)
>   From:
>         tesla-at-america-dot-com (Bob Schumann)
>     To:
>         tesla-at-pupman-dot-com
> 
> Not a happy hello,
> 
> I toasted my 12kv-at-60ma franceformer. Damn. I was using a variac
> and it must have been the 140VAC. Now when I plug in the transformer
> I get 1 quick big spark and then it starts smoking around the
> HV bushing.
> 
> I have a couple of questions.
> 
> 1) Does the smoke most probably come from the insulation or
>    from the windings or both.
> 
> 2) If unpotted, is it possible to remove the spools and rewind
>    them or does this require a certain machine. I would think
>    the secondary windings might be the 'hair' type wire and
>    easily broken. I would think that the core of the transformer
>    is still good.
> 
> I found a price for a new Magnatek (formerly Jefferson) $122.68 OUCH!
> 
> Bob Schumann
> 
> tesla-at-america-dot-com
> http://www.america-dot-com/~tesla


Bob -

  Sounds like you might have carbon-shorted a winding. A de-potting
of the transformer may be all you need to 'resurrect' the beastie...!

- Brent