The Turn Of The Century Electrotherapy Museum

4 Kilowatt Pancake Coil Tests
Initial tests at around 3000 watts.

Tests at 4KW with Military Quenched Gap.  2 MOT's in series, P & S, 220V input.  Approx 3000 watts.  .032 mfd

Discharge is a fiery ribbon.  Discharge limited to 6-8".

Note how the sparks form in ribbon patterns amidst an orange-yellow firey haze.

Insulators start to burn on gap - with fewer Spark Gap sections the quenching does not occur properly
and the output voltage decreases...

Still a very hot brush discharge!

After some adjusting secured the hot arc again...

and then the mica cap burned out!!  :(

"We've got more power than that!"