100/200 BPS sync rotary spark gap
Qustions first -
1 - What is a synchronous RSG
2 - Why do we need one
1 - The synchronous rotary will rotate at a fixed constant speed linked to the line frequency supplied to the motor, in this case 1500rpm, as the speed is linked to the incoming line frequency we can line up the flying electrodes with the peek in the AC wave cycle.
2 - If we are lookingh for greater efficency we want our tank capasitor to charge to it maximum and fully discharge every time, we can also set a very exact break rate for the coil oparation.
1 - What is a synchronous RSG
2 - Why do we need one
1 - The synchronous rotary will rotate at a fixed constant speed linked to the line frequency supplied to the motor, in this case 1500rpm, as the speed is linked to the incoming line frequency we can line up the flying electrodes with the peek in the AC wave cycle.
2 - If we are lookingh for greater efficency we want our tank capasitor to charge to it maximum and fully discharge every time, we can also set a very exact break rate for the coil oparation.
This spark gap has been re-built from an older rotary originally built by a Steve Crawshaw, a new disk made of G10 and 3.2mm Tungstun electrodes have been mounted in custom brass holders and custom nylon insulators, the motor is already synchronous so no machining was needed, the phase timing can be altered by rotating the whole motor body, with a slower motor this RSG gives us 100 breaks per second with 4 flying electrodes.
Just built a new disk for our sync rotary spark gap, now with 8 flying electrodes, again the flying electrodes are made using 4mm Tungsten welding rods.Now a true 200 breake per second seems to run well, only a little more current draw.
