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Re: transformer lamination
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To: tesla@pupman.com
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Subject: Re: transformer lamination
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From: Bert Hickman <bert.hickman@aquila.com>
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Date: Fri, 07 Feb 1997 06:14:37 -0800
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Subscriber: bert.hickman@aquila.com Fri Feb 7 22:54:31 1997
Tesla List wrote:
>
> Subscriber: major@vicksburg.com Fri Feb 7 00:39:27 1997
> Date: Thu, 06 Feb 1997 23:23:10 -0600
> From: RODERICK MAXWELL <major@vicksburg.com>
> To: tesla@pupman.com
> Subject: transformer lamination
>
> I have completely cleaned up and reassembled the core of the first of
> four neon transformers that I got from a sign shop in town. after I put
> it back together I checked the isolation between laminations with an ohm
> meter. And lo and behold they read low resistance. I'm not an electrical
> engineer like some of you fellas but even I know that there should be
> some sort of insulating coating between the laminations to cut down on
> eddy cuurents! Are neon cores supposed to be this way? The only thing I
> see on the laminations is some sort of metal blueing. I guess this is to
> keep them from oxidizing, I have taken appart other cores and they all
> had varnish applied. I wonder if it would hurt to apply some varnish?
> Any suggestions, or answers would be welcome!
>
> Frankensteins Helper
> Max
Roderick,
You're right - laminations are usually insulated from one another. A
_thin_ layer of varnish should work very well.
-- Bert --