Subject:
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RE: 32V DC Motor
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 17 Nov 1998 16:37:39 GMT
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Original-From:
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r.farnhill@bssl*antispam*.co.uk
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Viewed:
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1640 times
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Just a quick note..
As i remember if you stack the SN??? chips to get the current rating you
also have to
piggyback a L293D as these incorporate the anti-spike protection diodes as
the others don't
Russ.....
-----Original Message-----
From: MAR ERICSON [mailto:mar@cooper.edu]
Sent: Tuesday, November 17, 1998 3:18 PM
To: edmund
Cc: handyboard@media.mit.edu
Subject: Re: 32V DC Motor
There's an alternative to th4e L293D chip that fits the Handy Board.
This chip can supply 1A. I know you need 2+ Amps but a common method
adopted by some people is piggybacking two or more chips. (You put one
on top of another to allow the curent to be divided between the separate
chips. Thus if you piggyback three, you should theoretically be able to
supply 3A which is what you need.
I believe this chips is the SN??? that you can look up in the Handyboard
FAQ somewhere.
-----------
ericson mar
Robotics Consultant
mar@cooper.edu
(212)353-4356
Department of Mechanical Engineering
The Cooper Union for the Advancement of Science and Art
-------------------------------------------------------
On Tue, 17 Nov 1998, edmund wrote:
>
> hi
>
> i'm trying to use the handy-board to drive a 32V DC motor. a webpage at
> the handyboard website showed that this can be done by cutting the
> original power trace and simply plugging in a new external power
> source(a 36V battery pack?).
>
> what i would like to know is whether the handy-board can supply a 2.3A
> current to the motor with the increase in supply voltage. however, it
> seems that the existing L293D motor driver can only supply 600mA. does
> this mean i have to use a different chip with higher ouput current
> capability or even a separate motor driver board? if possible, could
> someone please recommend a suitable motor driver chip other than the
> L293D? Thank you.
>
> -edmund
>
>
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Message has 1 Reply:
 | | RE: 32V DC Motor
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| Greetings, We are using a LMD18200-based H-bridge circuit from Wirz Electronics to drive our motors. We simply removed a L293 chip from its socket and ran the signals (a short distance) to the LMD18200 circuit. Marco A. A. de Oliveira (...) (26 years ago, 17-Nov-98, to lugnet.robotics.handyboard)
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