Re: PLL-controlled SSTC?

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

Original poster: "Daniel McCauley by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

After some thinking. . .

Actually a PLL circuit really wouldn't work in this case.  The problem is
that when a arc streamer propogates it actually changes the resonant
frequency of the secondary and this ultimately kills the propogation of the
streamer.  The output frequency of the oscillator doesn't really change much
during such a propogation.
A PLL on the output oscillator really wouldn't do anything since the
frequency is relatively constant.

What would be needed is some kind of feedback to detect when the output
current begins to drop or something similar.
Richie Burnett uses a simple technique to simply feed back some of the
output voltage back into the feedback of the TL494 chip (See his website).
Its not very elaborate, but pretty effective for what its worth.

Dan