Stefan Hartmann Newman motor input current test
www.overunity.com My old Newman motor test. Testing the sparking comnmutator during contact and non contact to see, how big the back EMF current pulses are, that flow back to the power supply. On the scope you can see the input current. The ground line is in the center. When the commutator breaks the current flow you can see huge spikes also of a few milliseconds of negative current spikes, that flow back to the power supply and recharge it. If you use batteries, these will recharge your batteries. There is also a lot of Radiofrequency noise due to the sparking. Regards, Stefan.