MarkT:
And then there are high-impedance windings designed for constant voltage drive via
H-bridge. These are much easier to drive but have poor performance at anything
but low speed. Typically 20 ohms or so for 12V motors, 50 ohms or so for 24V motors.
I have heard this distinction before, but I don't understand it. Why won't a nominal 12v motor work better with 24v just as a nominal 5v motor will. I have some of these 12v motors and Pololu A4988 drivers and they seemed to work better with 24v in my tests.
...R