Subject:
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Replacing Motor Driver 754410's
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 13 Dec 1996 01:46:23 GMT
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Original-From:
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Scott Mitchell Simon <sms7@cec.wustl.&saynotospam&edu>
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Viewed:
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1603 times
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Hello!
I'm looking for feedback on my proposed modification of the HB. I
need to drive a 2amp motor with 24 volts. I don't really trust the
754410's to handle that much power (not to mention the handyboard
traces).
What I'd like to do is replace each 754410 with two National
Semiconductor LMD18200's. These are 3 amp, 55 volt H-Bridges. They
have digital inputs for
direction (hi or low on one pin)
PWM speed control, which I assume is currently driving the
ENable pins on the 754410. Please tell me if I'm wrong!
brake (pretty cool. When hi, it ties both output pins to ground, to
quickly remove the field in the motor!)
I think I can just substitute the appropriate pins on the 18200's
for those on the 754410, and add a digital output from the HC11 to
control the brake (a nice feature in my eyes).
Any comments/criticsms would be most appreciated.
-Scott Simon
-Washington University
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Message has 1 Reply:
 | | Re: Replacing Motor Driver 754410's
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| (...) Scott The 18200's are a pretty staight forward upgrade. I'm currently using two of them to run a couple power widow motors from a 12V gel cell. They work great. They get hot pretty quick, so a heat sink is a definite must. Scan through the (...) (28 years ago, 13-Dec-96, to lugnet.robotics.handyboard)
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