Re: secondary core other than air

[FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 8/9/00 11:32:36 AM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

> Using this materials on the outside  of single turn induction coil it's
>  efficiency is improved by 25%.
>  This material can also be used with pancake coil .If it is used on one side
>  it will push the field on to the
>  opposite side off coil.It is not conductive but there is down side -it is
>  very expensive.Block 1"x1"x4" costs more than $100.00.
>  Ivan

Ivan,

In a spark gap Tesla coil, the spark gap losses tend to dominate,
making the primary losses less important than otherwise.

Cheers,
John Freau