Re: need suggestions for general sizing in a multi coil setup

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

I run a 6" x 30" Tesla coil wound with 22AWG magnet
wire. 30" is the true winding length--the form is 33"
of SDR35 drain pipe. Power supply is a 5kva pole
transformer with an arc welder ballast. I've never run
it above 240vac/30A input. With a 4" x 20" drainpipe
toroid, it produces multiple streamers up to about 60"
or so. With a 7" x 28" inner tube & foil toroid, I get
sparks in the 80" to 90" range. With an 8" x 26"
toroid based on a swimming pool toy, I can no longer
judge the max length because every streamer hits
something (floor, ceiling, wall, primary, etc.), so I
don't know how long they would be in free air, but 8
feet is a conservative estimate. The sparks from the
largest toroid are also very intense and blue-white in
color. I don't know what the upper power limit of my
coil system is. 7200VA AC input doesn't seem to bother
it any, and I'm not inclined to press my luck.

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Jim Lux by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>
> 
> I'm looking for general opinions (no lack of those
> on this list) on
> appropriate toroid/top load  sizes for a secondary
> 6" in diameter and about
> 30" long.
> 
> Also, max power and breakrates that folks have run
> on a coil this size.
> 
> 
> 


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