most photos are from video
Multiple rotary spark gaps used.
120 BPS SRSG, 240 BPS SRSG, an ARSG.
Rotary Spark Gaps
The Beast, up close.
It was very damp out and I was getting racing sparks on the secondary.
I had some help from fellow coilers to reduce coupling with a CD case.
Gotta have a target
Maxwell 0.015 uF capacitor and 120 BPS rotary spark gap
The 240 BPS rotor is to the right and above the motor
Maxwell 0.015 uF capacitor and 240 BPS rotary spark gap
240 BPS rotary spark spark gap that requires no Tungsten cutting
and no working with G10, balancing, lathes, and other hard to do stuff
asynchronous rotary spark gap that requires some Tungsten cutting
but not much other hard stuff
Fellow coiler checking for heat buildup in current limiting ballast.
He says "slightly warm".
The ballast. 0.9 Ohms 10.50 mH.
Air core. Current limits to about 25 A. About $20, off-the-shelf, from Home Depot.
This is the Potential Transformer. Weighs in at 95 pounds. Rated at 1.5 KVA.
This is the variac with full-metering and built-in 60A EMI filter.
At maximum voltage, the current limits to about 25 A (with ballast).
It was intended for 240 V and 15 A (4.2 KVA). But I use it at 120 and 30 A.