Newsgroups: comp.robotics
Path: brunix!sgiblab!sdd.hp.com!hp-cv!hp-pcd!hpcvca!hpcvcec.cv.hp.com!abrown
From: abrown@hpcvcec.cv.hp.com (Allen Brown)
Subject: Re: H-Bridge
Message-ID: <1993Apr1.183947.16385@hpcvca.cv.hp.com>
Sender: nobody@hpcvca.cv.hp.com
Nntp-Posting-Host: hpcvcec.cv.hp.com
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
References: <733658844.F00001@ocitor.fidonet>
Date: Thu, 1 Apr 1993 18:39:47 GMT
Lines: 16

Don.Golding@f2206.n124.z1.fidonet.org (Don Golding) writes:
: First you need to determine the maximum current you need to drive 
: the motors with.  This will be the full stall current.

In the leg I am working on I had to measure the maximum current with a
scope.  A DVM doesn't respond fast enough.  The first 100ms of
acceleration my motors draw 3A.  They then settle down to a little
under 1A.

I don't remember the H driver I am using.  It is rated at 2A for each
of two motors.  I have wired the two in parallel for a max of 4A.  The
data sheet describes how to do this.  These drivers are easy to use,
much easier than discrete transistors.
--
  Allen C. Brown  abrown@cv.hp.com or hplabs!hpcvca!abrown or "Hey you!"
      Not representing my employer.
