Re: [CAD_CAM_EDM_DRO] Non-chopper unipolar v. chopper bipolar

JJ wrote:

> Has anyone switched their unipolar six lead motors from a simple
> transistor to ground type drive circuit to a chopper (L297/L298) driving
> half the windings as bipolar? I'd love to hear the performance gain, if
> any, and any other ramifications.

Yes, this was on a small XY stage used in a vacuum chamber, not a milling
machine, but the improvement in performance with the same software,
power supply, motors and stage was VERY impressive.

Jon