Subject:
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RE: You know, I just had a wacky thought...
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 14 Jan 1997 20:13:15 GMT
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Original-From:
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Chuck McManis <cmcmanis@freegate.NOSPAMnet>
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Viewed:
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1771 times
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It is not completely wacky, but there are issues. For example most audio
amplifiers aren't rated for DC operation (that having their output stay at one
level permanently) You can fix this by rectifying the output of the amplifier
and providing a DC signal. The second issue is typically that you need
a way of calibrating the input to the output and this is usally done with
a feedback system. If you don't have a feedback system then it is harder
to run reliably "open loop." In either event it can be fun to experiment with
this stuff so I encourage anyone reading this to take advantage of surplus
shops and apply 'disposable' amplifiers to the problem.
--Chuck
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From: John Whitten[SMTP:brat@naxs.com]
Sent: Tuesday, January 14, 1997 9:07 PM
To: handyboard@media.mit.edu
Subject: You know, I just had a wacky thought...
Rememeber all those MOSFET stereo ads in the back of Pop Electronics et
al? I got to thinking about it today and wondered if they wouldn't make
a cheap and easy motor controller? Sometimes the modules are dual
channels, but essentially all they are is "audio grade" MOSFET motor
controllers, if you want to think of them as such. Some of them are
rated from 100 to as much 1000 watts, which translates into a nice chunk
of power to work with. They're already modular, potted, and ready for
mounting on heat sinks. You can buy 'em for like $10-50 bucks at the
stereo fix-it shop...
Nah, its just a wacky idea.
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