You sure it's a stepper? Are you sure it's not burnt out?

With nine wire I'd think brushless three phase. Or maybe somthing with a
tach, or encoder of some kind.

Looking at your ohmmeter results I have to wonder. If a->b = 2 ohms and
b->c = 2 ohms shouldn't a->c = 4 ohms? Might there a diode in there? Did
you just leave it out?

-DEnny


----- Original Message -----
From: "D Yates" <piclist@NERDULATOR.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, December 03, 2003 12:17 PM
Subject: [EE:] Another Stepper Motor question


> I recently picked up a stepper motor with 9 wires, but can't find any
> documentation about a 9-wire stepper motor!  An attack with the ohm-meter
> revealed 3 wires (a,b,c - see below) with a 2.00 ohm resistance between
each
> pair of wires, and the rest have either infinite resistance or 5-10 Mohms
> resistance.  Any ideas what's going on here or how to control it?
>
> a -> b = 2.00 ohms
> a -> c = 2.00 ohms
> b -> c = 2.00 ohms
>
> If it helps, the wire colors are:
>
> a: brown
> b: yellow
> c: orange
>
> and the rest are black, red, purple, blue, white, and green.
>
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