Re: [CAD_CAM_EDM_DRO] Q's on simple stepper circuit

Hi Tim, Phil,

I was guessing unipolar, and your recommendations are for bipolar, So
Phil, you need to determine if you have a unipolar or bipolar motor!
Some threads of a few days ago discussed how to determine motor leads,
or we'll give you some clues.

Alan KM6VV

Tim Goldstein wrote:

>
> Try http://www.elabinc.com and take a look at the EDE1204. It would be about
> as simple as it gets. Look at page 4 of the data sheet for the schematics of
> hooking it up to an L293 (I would suggest you get the L293D and not have to
> bother with the external diodes). With the high resistance of the motor you
> should be fine with the capacity of an L293D.
>
> Tim
> [Denver, CO]
>
> > -----Original Message-----
> >
> > I was recently given a Cannon AP 200 Electric Typwriter.
> >
> > After tear down, I found a real nice Sankyo Stepper Motor, and some
> > circuitry to run it.
> >
> > The stepper is marked Volts 27 Ohm/coil 36 Phase 4 Degree/step 7.5
> >
> > I would like to use as much as I can of the circuitr yto just run my X
> > axis on my TAIG Lathe.
> >
> > I don't think that it needs to be CNC jsut a simple toggle switch to
> > toggle the stepper on and a reversing DPDT switch is really all I need
> > for a first project.
> >
> > Is the circuit from the Typewriter going to supply me with that, or
> > will I need to need to build something from scratch???
> >
> > What is the most simple of stepper circuits possible???
> >
> > Any clues as to where I could go to find such a circuit diagram?
> >
> > If I need to build such an item I have bread boarded circuits before,
> > but it was a thousand years ago before there were even IC's!!!!!
> >
> > Thanks in advance for any and all response,
> >
> > phil