Re: Effects of the size of toroids

• To: tesla-at-pupman-dot-com
• Subject: Re: Effects of the size of toroids
• From: "Mark Broker" <broker-at-uwplatt.edu> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 04 Mar 2000 12:06:23 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

<snip>
> About this, do someone know a formula for the maximum electric

> field at the surface of a toroid, given the voltage? (I asked this
> question some time ago, but didn't get any pointer that I could
> find). Not difficult to discover with an electrostatic simulator,
> but the geometry seems simple enough for a closed formula.
>
> Antonio Carlos M. de Queiroz

Antonio,

Terry Fritz has created a program that calculates the electric field around
a coil.  You can find it somewhere in his "misc" folder on his homepage.
Unfortunately, this program is quite CPU-intensive and written in a slow
language.  It took about an hour on my Athlon 500for the program to
"converge" (%change < .5%) with the accuracy set to maximum.  The result
from the program, when opened and plotted as a surface chart in Excel, is
the E-field around a TC, and the stress field (where the most likely places
that the coil will breakout).

http://www.peakpeak-dot-com/~terryf/tesla/misc/E-TESLA5.ZIP

Mark

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