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RE: [TCML] Calibrating a sync spark gap



Ok, point taken. Hopefully it is at least a rational starting point. It will be interesting to see how this setting correlates to experimental tweaking once I get it fired up.
- Karl

At 03:23 PM 1/25/2009, you wrote:
I don't think it's possible, or at least it's not recommended, to set the timing of a SRSG solely on the basis of the AC mains phase. The right setting will be highly dependant upon capacitor size, NST current, Variac setting, ferroresonances in your NST, and perhaps phase of the moon ;-) It's typical to set the SRSG phase experimentally, just adjusting for best performance. It's best to vary the phase in real time while the coil is running, either by mechanically rotating the motor in its cradle, or by using John Freau's phase shifter circuit and just twiddling a Variac knob. I find that the SRSG phase is an extremely critical setting and I wouldn't dream of locking it to any particular setting.

Regards, Gary Lau
MA, USA


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