Re: New pics and scope waveforms

• To: tesla-at-pupman-dot-com
• Subject: Re: New pics and scope waveforms
• From: "Jeff W. Parisse" <jparisse-at-teslacoil-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 12 Dec 1999 16:32:24 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Steve,

> which naturally comes with AC operation.  Of course, AC operation is
simpler
> and cheaper than DC powered TCs.  However, I would think the extra cost of
> rectifiers, charging chokes or H-bridge rotary gaps,  and DC reservoir
caps
> would be worth the greater control and simplified measuring capability it
> would yield.

DC systems are expensive! The cost of the additional parts (especially
if you go three phase) is significant. The AC solution is to use a salient
pole synchronous spark gap motor. With a SPSRSG the gap fires at the
same point on the AC waveform (same voltage each time) and that's
pretty much what you get with a DC system (albeit without being able to
vary pps as easily). I can set the 9J to fire at 480, 240 and 120 pps by
adding or subtracting electrodes.

I'm still putting together a 12kV -at- 300ma DC power supply for grins so
once that's done, I may rethink my position, but as for now, the cost is
really prohibitive.

Jeff Parisse
www.teslacoil-dot-com

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