Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!agate!howland.reston.ans.net!gatech!news-feed-1.peachnet.edu!news-feed-2.peachnet.edu!umn.edu!lynx.unm.edu!Mr-Hyde.aoc.nrao.edu!news
From: browen@aoc.nrao.edu (Bruce Rowen)
Subject: Re: Motor noise locks up uController
Message-ID: <1993Nov22.182816.7869@Mr-Hyde.aoc.nrao.edu>
Sender: news@Mr-Hyde.aoc.nrao.edu
Reply-To: browen@aoc.nrao.edu
Organization: National Radio Astronomy Observatory, Socorro NM
References: <2cmqja$sga@usenet.rpi.edu>
Date: Mon, 22 Nov 93 18:28:16 GMT
Lines: 33


>I built a motion base from a small childs toy bus.  I want to
>drive it using a Pittman GM9413C540 gear head DC motor.  I have
>a microcontroller (intel 8052) with pwm output driving a 
>TI open collector Nand driving a 2n6052 (12 amp PNP BJT).
>I have the bjt emitter to +12v, the collector to ........

[stuff deleted]

RULE # 6

All communication between a microprocessor/digital circuit to 
high-power/inductive circuits should be isolated!

Use an optoisolator and put everything on physically seperate power 
supplies.

>
>Any suggestions?
>
>Thanks



---
-------------------------------------------------------------------------------
Bruce Rowen 				National Radio Astronomy Observatory
Scientific Programmer				Array Operations Center
browen@aoc.nrao.edu			  P.O. Box O  Socorro, NM   87801
(505)385-7329					     (505)385-7000
-------------------------------------------------------------------------------


