Re: 16" coil

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

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

In a message dated 1/26/01 12:15:42 AM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:

> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Gbjsjg-at-aol.
> com>
>  
>  I'm building a 16" diameter 64" length coil 15kv 30ma and I'm wondering 
how 
>  big my toroid has to be?
>                                                                  -Thanks 
Max 
>  Joseph

Joseph,

That's kind of a large secondary for a 15/30 NST.  Large coils like
that are generally powered by pole pigs or at least a couple of PT's.
Generally the largest secondary used with a 15/30 NST is about
6" by 24", although it could be a little bigger.  Making the coil
larger won't make the sparks longer.  Only more power can do
that.

JOhn