Newsgroups: sci.electronics,comp.robotics,alt.comp.hardware.homebuilt
From: Andre@firkle.demon.co.uk (Andre Powell)
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!howland.reston.ans.net!pipex!peernews.demon.co.uk!firkle.demon.co.uk!Andre
Subject: Re: Stepper Motor Controller ICs (I HAVE PARTS/KITS CHEAP!)
References: <1995Jan20.154627.17230@lmis.loral.com> <3g4ckn$rek@homer.alpha.net> <1845@zam103.zam.kfa-juelich.de> <3gdjll$8jd@rigel.infinet.com>
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Date: Sun, 5 Feb 1995 10:39:47 +0000
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In article <3gdjll$8jd@rigel.infinet.com>
           cwtech@infinet.com "CW Technology" writes:

> In article <1845@zam103.zam.kfa-juelich.de>,
> rolf skowronek <R.Skowronek@KFA-Juelich.de> wrote:
> >Dan Merkel (dmerk@earth.execpc.com) wrote:
> >: knuth (knuth@lmis1.lmis.loral.com) wrote:
> >: : Can anyone recommend a cheap stepper motor controller IC for a 2 phase
> >: : Airpax stepper to interface with an HC-11?  I am new this area so my
> >: : terminology may not be correct.  FYI, my steppers have four leads and
> >: : require +/- voltages to step (as opposed to +/off).  Or is it just as
> >: : easy to control them with my HC-11, using some driver tansistors for
> >: : power?
> >
> >I am using the L297/L298 chipset to drive 4-lead motors. The L297 contains
> >the neccessary logic to drive the L298 dual full brige which can deliver up
> >to 2 amps per phase. Current limiting is done by chopping the L298 output
> >lines. The neccessary diodes for protecting the output stage have to be of a
> >fast type though (trr <200 ns) like BYV27. In Germany the price for each of
> >those stepper ic is around DM 10. Those I have seen were manufactured by
> >SGS and Texas.
> >
There is a stepper motor controller IC called SAA1027, but I'm not sure if it 
will be suitable for your application.

Mark Warren 
e-mail address - mlwarren@gwent.ac.uk

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