The Turn Of The Century Electrotherapy Museum
http://www.electrotherapymuseum.com
(C) Jeff Behary 2007

9" Pancake Coil Testing Photos...

9" Pancake Coil Movie

Click here for a second movie!


1.5 turns per layer, 300 turns total, 26 AWG wire.  1" ID, 9" OD.
Brass tube is 1/2" OD.




Low power, approx. 175 watts
4000 watt transformer, .024 mfd condenser, single 3/8" diameter spark gap.


Side view of same.


Medium power - 500 watts.


High power - 750 watts.


Plugging it in on the second day...

Gap is closed so that only a few arcs pass to the primary...


Cylindrical Electrode Removed, discharge is now from bare wire...