Effects of the size of toroids

• To: tesla-at-pupman-dot-com
• Subject: Effects of the size of toroids
• From: "Neal Whitaker" <NDWhitaker-at-Worldnet.att-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Thu, 02 Mar 2000 04:15:55 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Several of the people on the group responded to my E-mails about my coil
and I would like to thank them.
However that has lead me to new questions.
Amongst the many suggestions was one to replace my bowls with a toroid
of 3" x 20" (capacitance of 20 pF).
Cool I can build that.  However I started playing around with numbers
and found
that a 8" x 11.035" has the same capacitance as well as a 1" x 41.3"
(both 20 pF) (these were extremes in both directions)

By applying the formula for area of a torus (4pi^2Rr) to the toroid I
found the following
the 8" x 11.035" has surface area of 871.288 in^2
while 1" x 41.3" has a surface area of 407.61 in^2

This is a 113% increase in surface area.  The 3" x 20" is around 500
in^2

My question is as follows: How does the surface area or size of the
toroid affect the ouput of the coil.?


Thanks again guys

Neal
NDWhitaker-at-worldnet.att-dot-net

• Prev: Re: 25kVA neon transformer
• Next: Re: Request for Magnet Wire! Desperate!
• Index(es):
  • Main
  • Thread