Hi John,I just got back on emails tonight after a day or two outage, so I'm probably late on my reply (ignore if you've found the problem).
I find pulsing odd in your case. This is likely a simple asynchronous rotary? I realize you specified 1800 rpm, but I assume that is just a rated rpm for the DC motor? Can you give cap size, power source (MOT's?), and gap electrode arrangement and spacing? Also, is it a constant pulse or intermittent? I'm probably not much help with this as I've never encountered a problem like this with a rotary, but I wonder if the MOT's are affecting the motor on the mains circuit. You mentioned 30% on the variac and both coil and rotary pulse. So I'm wondering if it pulsed at less voltage. I expect it pulsed right when the coil began operating (but wanted to be sure).
Take care, Bart John Forcina wrote:
Ok tonight i took my big coil out for a run since i havent really got a chance to tune it yet. I noticed that as soon as i got it to 30% or higher on the variac the spark gap and coil started pulsing really bad. it would shoot 6' streamers for about 1/2 second and then stop for about 1/2 second. The rsg is a dc 1800rpm 240bps. I still have no pfc so that may be a problem. Anyway why is this doing this? Any tips or suggestions would be greatly appreciated. _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla
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