RE: ferrite mini coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Neil Richardson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <neil-at-opticalrealities-dot-com>

It would be more difficult to do the math if you were using a Ferrite Rod,
unless you knew exactly what type it was. Apart from that - they definatly
improve performance. I used one in my mini coil, and the performance is
awesome! I'd guess with a ferrite core, for the same performance, you can
use a lot less than 1000 turns. Just use as many turns as you can get still,
just to be sure :)

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: 19 January 2002 19:40
To: tesla-at-pupman-dot-com
Subject: ferrite mini coil


Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<PeterCGMN-at-aol-dot-com>

    While I was scrapping an old radio for entertainment I found a ferrite
rod about 1/2" wide and about 4 1/2" long. Since I have read about the
advantages about having ferrite in the center of the secondary, I have
decided to build a small coil around it. I have two questions:

1) Can I power it with very little power? (like strait out of the wall, or a
6.5kv xformer powered by a car battery?) I am only planning on playing with
it, I don't intend for it to be very impressive.

2) It is slightly oval, two of the sides are flattened will this affect it?

73, Kc0Ion "Ion-Boy"