Re: [TCML] ferrite variac

["DC Cox" <resonance@xxxxxxxxxxxx>]

It depends on what power level and how many Amps you are trying to draw with
your load.  This determines the required total cross-sectional area of the
core.

Dr. Resonance




On Mon, Jun 2, 2008 at 8:22 PM, <jhowson4@xxxxxxxxxxx> wrote:

> hello all,
> I am trying to make a home brew variac (for tesla coil use).  I got my
> hands on 4 (4in outer diameter 3in inner diameter 1in high) ferrite cores.
>  I am planning on stacking them together for one big ferrite core.  do you
> guys think that this will work for a variac core?  or do I need a laminated
> iron core?
>
> many thanks
> Jay Howson
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