Re: Synchronous vs stepper

Hi, A 200 step motor (1.8 deg) can be run directly from a 50 or 60 Hz
supply. What is needed is a capacitor in series with one winding to
phase shift the AC 90 deg relative to the other winding. At 50 Hz
this gives 60 RPM and at 60 Hz it gives 72 RPM. Step motors intended
for 115 VAC operation have a high inductance to limit phase current
to the correct value at 50 / 60 Hz.

Mariss

--- In CAD_CAM_EDM_DRO@egroups.com, Multi-Volti Devices <multi-
volti@s...> wrote:

> I believe the synchronous variety also has a capacitor wired

internally, so it doesn't need a stepper drive; it runs right off 120
vac

> 60 Hz (for a 60 Hz model?)
>
> Murray