Re: Toroid Dimensions?

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

Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>

Hey Dan,

The taller toroid would give the longest sparks.  I feel that it somewhat 
depends on the length of the secondary because of voltage breakdown across 
the secondary(ive been experiencing this alot lately).  If you have at least 
an 18" or taller secondary i think that the 5" would be better, since it 
would be more likely to throw out 1 or 2 streamers at most, and put a lot of 
power into them.  Ive had toroids with larger overall diameters that just 
dont work as well.  If you have a decent number of turns on the secondary, 
id go with the fatter(taller) toroid since you would still get a low 
frequency even if its less capacitance than a wider toroid.  Good luck, and 
i hope i made sence to everyone.

Steve Ward.

>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Toroid Dimensions?
>Date: Mon, 15 Jul 2002 17:26:05 -0600
>
>Original poster: "Mccauley, Daniel H by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
>
>
>
>	Question regarding toroid dimensions??
>
>	When selecting a toroid, any other dimension i should worry about?
>
>	For example, say toroid X has dimensions 5" x 16" and its
>capacitance is 20pF
>
>	And toroid Y has dimensions 3" x 22" has capacitance 20pF
>
>	Of course i'm just putting some arbitrary capacitance values here,
>but given the same capacitance, what toroid would work better.  I know that
>the larger the height dimension is, the higher the voltage the toroid can
>hold before arcing.
>
>	Thanks again.
>
>	Dan