RE: [TCML] question of construction - is metal okay at the centerofprimary?

["Ryckmans, Thomas" <Thomas.Ryckmans@xxxxxxxxxx>]

Gary,

Thanks for your comments - it is certainly a gray zone for me! Dr
Resonance is using metal (brass) to fit primary and secondary together -
but I don't understand why eddy currents are not an issue in that case.
What is the explaination? I check the Wikipedia page on eddy currents
but don't feel wiser about why it is not an issue at the center of a
Tesla coil's primary...

Cheers

Thomas

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
Behalf Of Lau, Gary
Sent: 22 September 2008 15:56
To: Tesla Coil Mailing List
Subject: RE: [TCML] question of construction - is metal okay at the
centerofprimary?

There is no black or white answer to your question.  NST's and MOT's are
commonly mounted in the base of coils - it all depends upon just how
close to the primary they are.  Two inches away, and you will have
problems.  Two feet, no problem.  And a whole lot of gray in between.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of MakingLightning
> Sent: Sunday, September 21, 2008 11:43 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] question of construction - is metal okay at the
center
> ofprimary?
>
> I have been thinking of building an 8" coil using a 7.5kva neon
bombarder
> transformer.
>
> Do you think I could have problems if I put the transformer in the
base of
> the tesla coil?
>
> It would be nice to just run 220 and control to the coil instead of
high
> voltage.
>
>
> Kevin

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