Re: Primary Coil wire type

To: tesla-at-pupman-dot-com
Subject: Re: Primary Coil wire type
From: Doug Brunner <dabrunner-at-earthlink-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Sun, 11 Apr 1999 15:02:42 -0600
Approved: twf-at-verinet-dot-com

I'm assuming your coil is under about 1.5kVA. The 1/4 in. solid copper is good.
However, for a bigger coil, you want to use tubing, because current flows
mainly
on the outside, and that way you have two surfaces to work with and the
interior
is not wasted.

For the same power range, your resonant frequency is good. However, you may
want
to redesign if possible, to make your secondary more like 3" or 4" in diameter.

Tesla List wrote:

> Original Poster: "afa2fg" <afa2fg-at-email.msn-dot-com>
>
> Greetings,
>    Have heard lots of folks using 1/4 in. ref. tubing for the primary
> winding. I have a roll, 60#, of 1/4 in. solid copper wire. Is this
> satisfactory to use??
>    Also, using the Wintesla program, I find that my secondary has a resonant
> freq. of almost 400 khz. with a toroid. { 2 1/2 in. dia.  x  24 in. coil
> length. } This sounds a little high to me. What do ya think?
>    I can already feel the hair standing up on the back of my neck.
>
> Thanx
> George

--
        --Doug Brunner
                <dabrunner-at-earthlink-dot-net>