Re: toroid mounting height query

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

Original poster: "Chris Arnold" <chris_arnold-at-msn-dot-com> 

IMHO the best height for mounting a toroid is the one which gives highest 
performance ;)  But on a more serious note the toroid must be close enough 
that it prevents breakout from the top few turns of the secondary, but also 
far enough away that it doesn't magnetically couple energy out of the 
secondary system.  In systems such as VTTCs and SSTCs this can result in 
large power losses and a very toasty toroid, but this induction heating 
effect seems to be less pronounced with disruptive coils.  I have had best 
luck with the "equator" of the toroid about 1.5 times the minor diameter 
above the top turn on the secondary.

Chris Arnold


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: toroid mounting height query
>Date: Sun, 23 Nov 2003 17:22:01 -0700
>
>Original poster: "Christopher 'CajunCoiler' Mayeux" <cajuncoiler-at-cox-dot-net>
>
>
>Is there a defined minimum height at which the
>toroid should be mounted above the uppermost
>secondary coil winding?
>
>If there is, what is it?
>
>And will mounting HIGHER effect performance, or
>is going higher just a matter of aesthetics?
>
>---
>C.L. Mayeux
>Owner, MSB Data Systems
>http://www.msbdatasystems-dot-com
>