Re: [CAD_CAM_EDM_DRO] stupid stepper question

A 4 phase motor can be wired 2 different ways. Bipolar series, Bipolar parallel.
Wired bipolar series it can be used with a unipolar driver or in the case of the drivers I sent you, bipolar series. My driver would also use bipolar parallel .

Dan Mauch
economical 3D scanner software and kits
low cost stepper and servo motors.
cases for Gecko drives
kits and assembled 3-4 axis drives
www.camtronics-cnc.com
www.seanet.com/~dmauch

----- Original Message -----
From: Chuck Merja
To: CAD_CAM_EDM_DRO@yahoogroups.com ; 'Square 1 Electronics'
Sent: Monday, December 03, 2007 1:52 PM
Subject: [CAD_CAM_EDM_DRO] stupid stepper question


OK I'm showing my ignorance (again). I acquired what look to be some nice
steppers out of a HD printer - 200 steps per rev, and look to be NEMA 23, 6
wire, and an ohm meter confirms 4 phases. Dan Mauch was kind enough to
donate a bipolar chopper board, for our school CNC router project. But I'm
more than a little confused about this 4 phase motor, which I have driven by
hand with a unipolar tester, and the bipolar driver board. Are they
incompatible, or am I missing something? Looks like I need to search for
bipolar motors, eh?

Chuck Merja
.

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