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Re: begginer needs help
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To: tesla-at-pupman-dot-com
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Subject: Re: begginer needs help
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From: Terry Fritz <twftesla-at-uswest-dot-net>
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Date: Sat, 04 Mar 2000 21:59:55 -0700
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Approved: twftesla-at-uswest-dot-net
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Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme
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In-Reply-To: <99.20521f7.25f336ad-at-aol-dot-com>
At 11:03 PM 03/04/2000 -0500, you wrote:
>what kind of primary should i build for a 3by 15 inch coilpowered with a
>9kv30ma nst and soon moving to a 15kv30ma?some say a flat spiral.can someone
>explain this to me?
Hi Fucian,
My small coil is similar to yours. You should check out the pictures at:
http://users.better-dot-org/tfritz/newcoil/
The secondary is 26 inches long by 4.25 inches in diameter. There are 1180
turns of #24 wire giving an inductance of 22mH. The top terminal is one of
John Freau's 4x13s. The total resonant frequency is 248kHz. I made the
primary out of 1/4 inch copper refrigeration tubing. I took an 18x18x1/4
inch sheet of Plexiglass and drilled holes 0.40 inch apart and stuck #6
nylon screws through the holes to hold the spiral of copper tubing in place.
Hope this helps.
Cheers,
Terry