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RE: TC frequency
Hi Brad,
"efficiency" needs specific definition, but,
IMHO, Lower resonator freq is better,
reduces losses, but requires bigger structure and
proportionally larger conductors, gap materials, space.
Limit is likely Rsecdc and becomes significant relative to Rgap.
(more but larger wire req'd for higher Sec inductance to provide lower freq)
However:
John Freau & others have produced some remarkable
power efficiencies using moderate freq's by
reducing Rgap (loss) by using larger Pri's (more turns)
(and optimized NST PFC).
Lowest freq example:
Mother nature does great at DC.
Well isolated Charged clouds (electrodes) are hard to beat
for long, albeit, infrequent sparking.
Apparatus requires lots of open space and spark initiation time is hard to
control.
Many reject two charged plates as being TC related,
because of the particle charge transport mechanism (Van de Graf like)
rather than impulse ! But it is an interesting "limit" thought exercise.
Why don't you do some experimental testing and report the results.
Controls are difficult to maintain so the data may be compared with relevance.
(like keeping Rlosses constant by scaling everything [or specifically
accounting for'em])
But it is do-able.
Regards, Dale
-----Original Message-----
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, May 17, 2000 5:38 PM
To: tesla-at-pupman-dot-com
Subject: TC frequency
Original Poster: "Brad DiGiovine" <Guido28-at-mediaone-dot-net>
I know many of you have different opinions on this topic, and i know
some of you have probobally done experiments on this, but i was
wondering, what do you think is the optimal operating frequency of a
tesla coil? Which frequency makes it most efficient?
Thanks for your help
Brad DiGiovine