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Re: Why a toroid?
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To: tesla@pupman.com
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Subject: Re: Why a toroid?
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From: Tesla List <mod1@pupman.com>
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Date: Wed, 8 Oct 1997 20:56:55 -0600 (MDT)
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Approved: mod1@poodle.pupman.com
---------- Forwarded message ----------
Date: Wed, 8 Oct 1997 17:41:51 -0700 (PDT)
From: "Edward V. Phillips" <ed@alumni.caltech.edu>
To: tesla@pupman.com
Subject: Re: Why a toroid?
"A lot of effort has been directed at fabricating toroids for TC's.
Has anyone ever tried using a large metal disk as the top electrode?
A suitably sized disk would have just as much C to gnd as the toroid.
I know that I should just try it myself, but I thought I'd ask first.
-G"
You need a LARGE radius of curvature in order to keep the
"breakout voltage" high. A disk with a sharp edge would have a
much lower breakout voltage than the toroid, for dimensions which
gave the same capacitance.
There's been a lot of discussion here about making toroids
in various exotic, difficult, and heavy ways. What is wrong with
the aluminum ducting / aluminum tape approach??? If done carefully
it gives a neat, lightweight toroid which looks and works "just
great".
Ed