best way is to open it, if you don't have data sheet and have one looking abnromal.. ----- Original Message ----- From: "Denny Esterline" To: Sent: Wednesday, December 03, 2003 12:33 PM Subject: Re: [EE:] Another Stepper Motor question > 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" > To: > 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. > > > > -- > > http://www.piclist.com hint: PICList Posts must start with ONE topic: > > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads