I like to think of brushless motors as very coarse steppers (when I'm not thinking of them as three phase ac motors.) The halls are required for the controller to tell where the rotor is so that it can apply current to the right windings. Halls measure the magnetic field of magnets on the rotor. You can see by the pinout that there is a correspondence between the stator windings and the Hall sensors. I believe that the Hall bias would be the power, one of the hall output lines would be ground and the third the output. This should be verified.
Current practice is to use an encoder in conjunction with the Halls in order to provide much better rotary position info to the controller. Your motors may have a simplified version of this in the "16 Cycle Square Pickup Loop." I would ignore this unless I could find a controller meant for these motors.
I have no idea why there would be a transistor in there.
You need brushless motor controllers for these motors. Rutex is the only affordable new controller I know of, others are in the $500 American range.
HU, HV and HW almost have to be the windings for the motor. There should be a very low resistance between these wires.
Last edited by unterhaus; 12-04-2004 at 05:46 PM.
Reason: add more information
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