The Turn Of The Century Electrotherapy Museum
(C) Jeff Behary 2007

9" Pancake Coil Testing Photos:
Second Tests for a Rotary Spark Gap 1 KW Pancake Coil

Click here for a 30 second movie...

Coil proved more successful with better insulation.

Performance increased as the rotary spark gap was closed a bit...

The third test will be simpler - instead of oil, more wax will be used (and this time the primary
coil will also be impregnated under wax.)
Final coil will be a block of wax 10" in diameter and 3" tall.