Bill is correct. I checked the voltage coming out of the red wires. It's AC with a varying amplitude and frequency. Higher amplitude and frequency for a faster speed, and amplitude is approximately proportional to speed (half speed = half RMS voltage.)
It seems to have 10 pulses per rotation, although I haven't precisely measured it.
Once running, the field voltage can *sometimes* be removed. However about 20% of the time, it will stall and then start drawing ~3A.
Strange thing is, it seems to draw about the same current, no matter the voltage, so power is approximately proportional to voltage. It draws about 0.8A - 1.2A unloaded.
It doesn't generate a voltage when rotated without a field voltage.
It seems to have 10 pulses per rotation, although I haven't precisely measured it.
Once running, the field voltage can *sometimes* be removed. However about 20% of the time, it will stall and then start drawing ~3A.
Strange thing is, it seems to draw about the same current, no matter the voltage, so power is approximately proportional to voltage. It draws about 0.8A - 1.2A unloaded.
It doesn't generate a voltage when rotated without a field voltage.