Getting more volts from a pulse motor setup

[ciprianwiner]

it's amazing how the bemf can provide such high voltages and really nice setup :D

[AdminOnDuty]

Great Stuff on the fine tuning.

The voltage comes from the fast collapse of the field. This is what makes the reed switches better than electronic switches, once the contacts break the resistance across them jumps with such velocity that field is allowed to collapse as fast as possible. The faster the collapse, the higher the spike. Do you have an oscilloscope? It would be interesting to see the phase relationships between these signals.

Cheers!

[Magluvin]

Thanks Admin

I wish I did have a scope. I had one years ago, and it had some problems and was old.

Yeah, I was impressed by how much of a jump in volts going from just generator mode to reed shorting bemf capture mode. I didnt think there would be such an increase. I remember hooking up a bosch relay in buzz mode and used a diode and cap to capture, and the ratio was 12v in and 90v captured. But this is impressive. About 1.2v to 55v, and with iron core, 2.2v to 91v.

Mags