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Re: synchronous motor

Original poster: Mike <megavolts61@xxxxxxxxx>

Original poster: "D.C. Cox" <resonance@xxxxxxxxxxxx>

I have a few --- $45 each.    They are not hysteresis synch type
which means that sometimes you have to throw the switch on/off 2 or 3
times before they go into sync but they will sync up.   We usually
bring up the variac to 30% to check spark output ---- if it's normal
then crank the variac up to the desired setting as the rsg is in
synch.   If out of sync the output is considerably less.

We use these motors with a 1/4 inch thick x 7.25 inch dia. type LE or
CE phenolic disk for the rotors and 3/16 inch tungsten rod for the

Dr. Resonance

That sure sounds like a pain in the other side of your lap.....with all your resources, you don't have a vendor for easy-to-get rotory gap motors? If not, I'd go with the DC charging circuit design.

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