Re: [CAD_CAM_EDM_DRO] 8" Floppy Drive Motor question

Hi Jon,

Yes! Something like that WOULD be a good find. I mostly saw Shugarts,
don't remember any board like that (it's been a while). The +24v was
needed for the stepper drive, and there is usually a "drive chip" on the
board, and/or driven by the LSI chip. Who made the drives you saw?

Alan KM6VV

Jon Elson wrote:

>
> Alan Marconett KM6VV wrote:
>
> > Hi Alan,
> >
> > I believe they were 3-phase motors, I have not been able to drive them
> > (didn't try too recently), you can use the LSI or discrete drivers on
> > the drive's PCB. I had/have the Shugart drives! Actually, I doubt if
> > you'd find them useable for anything else. Much better to get surplus
> > NEMA #23's.
>
> If you look caefully, you can sometimes find both 5.25 and 8" drives that
> have modular motor/controllers. These usually had 3 wires, supplying a
> ground, +12 V and a run signal to the motor control chip. You'll know
> you have one of these when you see a small circuit board attached to the
> motor with one or several chips on it, and very few wires going to the
> rest of the drive circuitry. I have used these motors in several projects.
>
> Jon