Re: SRSG machineing

["Bill Lemieux" <gomez-at-netherworld-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

On that fateful day 8/4/00 6:41 PM, thus spake Tesla list:

> Original poster: FutureT-at-aol-dot-com
> 
> In a message dated 8/4/00 11:45:13 AM Pacific Daylight Time, tesla-at-pupman-dot-com
> writes:
> 
>> Could a twin-coil setup have seperate gaps perfectly synced to each other?
>> (Smpte for a Tesla Coil :)....cool)
>> 
> 
> Chris,
> 
> Two separate sync gaps cannot be synced perfectly RF phase-wise.
> For a twin, it is usually desired that the sparks "attract" each other
> due to proper RF phasing.
 
 This is something I've had doubts about since I first read about it.  In
order for two coils to maintain an out of phase condition (resulting in the
maximum voltage between the two discharge terminals) they would have to be
operating at _EXACTLY_ the same frequency, with no drift whatsoever.

 If one coil is operating at 212.570 kHz, and the other coil is operating at
212.580 kHz, they will be constantly drifting in and out of phase with each
other ten times times a second.  More to the point, they will only be out of
phase with each other about 10% of the time!

 Any time the two coils are not perfectly out of phase with each other, they
are going to behave like two random coils of different frequencies that just
happen to be sitting next to each other, and happen to look alike.

 Now I am perfectly willing to accept that two coils can be tuned to
approximately the same frequency, ie; 212 kHz +/- a few kHz.  But it
stretches the limits of believability that two coils could not only be tuned
within less than one Hz of each other, but maintained there constantly.

 Would someone kindly point out any flaws in my reasoning?

 Incidentally, I have run two "identical" 12kW coils, with totally separate
primary systems, making no attempt to tune them to each other, and saw
streamers that frequently met in the middle, and more rarely, solid "power
arcs" (please don't ask for another definition, JC) between the two toroids.

- Gomez (Bill Lemieux)

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