Re: Toroid on CW TC

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

Original poster: "Steven Ward" <srward16-at-hotmail-dot-com> 

It seems to me that VTTCs and SSTCs like to have SOME extra capacitance 
added to their self capacitance.  In recent tests i did i compared 3 
situations.  1) a 190khz coil using a small toroid to achieve 21" sparks.
2) the same coil but without a toroid: sparks only some 12" or so.  3) a 
smaller coil WITH toroid to come close to the Fres of the unloaded coil (in 
ex 2) :sparks averaging about 16" or so.  So it looks like frequency helps 
sparks, BUT also a small amount of terminal capacitance helps.  I dont 
really know the theory behind this and how it relates to CW coils.

Steve Ward


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Toroid on CW TC
>Date: Sat, 27 Sep 2003 09:11:19 -0600
>
>Original poster: Vladimiro Mazzilli <mazvla-at-iol.it>
>
>Hi all,
>I wish to know the real necessity of a toroid on Tube working or SS
>tesla coil.
>
>Thank
>
>Vladi.