This simple commutator that is powered by a 12v dc motor, with less then 1 amp of power.
This convert 120v dc pulse to a 120v ac pulse.
http://www.youtube.com/user/OverUnityNow1#play/uploads/8/p17ehC6uO2M
Tom.
I dont get it, i thought a commutator allowed ac to be cut off at half cycle to produce dc current, done with a split-ring