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Re: Sync RSG instability
Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>
In a message dated 5/24/01 10:31:25 AM Eastern Daylight Time,
> Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> I'm slowly working on getting my sync RSG ready.
> BUT, when I advance my RSG timing to fire any later than slightly after
> the peak charging voltage, the gap stops firing, the charging voltage
> waveform changes to a full 35KV (!!!!) sinusoid, and the phase of the
> waveform shifts by 90 degrees, such that the zero-crossings are now
> occurring at the gap presentations, which is why the gap doesn't fire.
> If I retard the timing, it will again resume normal firings.
> Has anyone
> else seen this behavior?
> Gary Lau
> MA, USA
I've seen that behaviour, and I remember John Morawa saw it too.
It may have been discussed on the list, it seems that at some
point as the phase is changed, the NST goes into a new mode,
due to the way energy is stored in the NST. I'm always careful
to set my sync gap phase, a little distance away from this spot.