Re: stepper motors

Jon Elson wrote:

>
> TADGUNINC@... wrote:
> >
> > Hopefully you guys are still on......what is the difference synchronous ac
> > motor, advertisement says it can be used as a dc stepper, and a stepper
> > motor?
>
> Well, usually a typical synchronous AC motor can't be used as a stepper.
> But, there is a particular type, low-speed synchronous motor, as made by
> Superior Electric and others, that are made exactly like steppers. The
> difference is that these are usually made with 120 Volt windings, and therefore
> have MASSIVE inductance, making them VERY poor steppers for motion
> control applications.

I has disassembled both types of Superior Electric motors and found very
little to no differences. Remember, a coil wound for 24 volts DC and
one wound for 120 volts AC are almost the same.

Just unsolder the connector plate and remove it, and you will see coils
that look identical for both types.

John Grant

>