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Re: Solid state spark length record?

Hi Gary, All,

I would expect you have very interesting design, one that would be of great
interest to us folks here. I have yet to try a solid state CW Tesla Coil,
as Pulsed Tube coils are a bit easier to build. I think photos are in
order!  I think John Freau has produced some of the longest "pulsed" CW
sparks (at least that I know of) at around 38" from several 833A tubes and
5-7KVA power. Even at only two pulses per second, the power must be great.
But it is still a strong belief of mine that pulsing a very well designed
(ie, impedance matched -spark to coil) CW coil, one may come close to a
"Damped" wave design in spark efficiency (well close may be relative ;>)). 

Hmm, perhaps you would get even better spark length if you could increase
the output to 15-25 PPS? The sparks will have the previous ion trail to
"assist" with length.

Please let us know how you did this amazing feat!

Regards,

David Trimmell

At 04:07 PM 4/17/00 , you wrote:
>Original Poster: gbyrd@aros.net 
>
>At 02:58 PM 4/16/00 -0600, you wrote:
>>Original Poster: "Gary Johnson" <gjohnson@ksu.edu> 
>>
>>Who holds the record for spark length to a grounded object from a solid
>>state driven Tesla coil?  I hit 57 inches recently before a group of over 50
>>people. I was direct driving an Extra coil at about 2 sparks per second with
>>an IGBT inverter.
>>
>>Gary Johnson
>>
>
>Very impressive Gary! The longest I have produced is about 20", give or
>take a few inches. Why don't you give us a link to a photo?
>
>Duane A Bylund
>
>