Subject:
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Re: 600 mA Limit
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 29 Mar 1996 00:14:07 GMT
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Original-From:
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MAR ERICSON <mar@cooper.SPAMCAKEedu>
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Viewed:
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2458 times
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>
> In your message you said:
> > >
> > > I just realized that getting 1200 milliamps running two motors
> > > bi-directionally is equivalent to running four motors
> > > uni-directionally at 2400 from a total power dissipation standpoint.
> > > I.e., there are still 600 milliamps running through each driver.
> >
> >
> > You mean running FOUR motors uni-directionally from ONE L293D chip, right?
> > ...and TWO motors bi-directionally from ONE L293D chip?
> >
> >
> Yes, that is what I mean.
>
> -Fred
OK. I just wanted to make sure I'm understanding the material.
So, my guess is that in order to drive the 4 motors off one chip, you would have to ground the other lead of each motor?
So, does that mean that there is 2.4 A source from the chip and also 2.4 A in from the L293D ground? ...totaling 4.8 A runniing throught the entire chip from a power dissipation standpoint?
The reason I'm asking is because, from what you said above. It seems to me that running two motors is the same as running four motors. But 4 motors does more work than two, no matter if they are bi-directionsl. (They only go in one direction at a time.)
- Ericson
ZZ
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Message has 1 Reply:
 | | Re: 600 mA Limit
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| (...) from the L293D ground? yes, this would be correct. Well, there would be 2.4 amps running through the chip's power source, into the motors, and into ground. ...totaling 4.8 A runniing throught the entire chip fro m a power dissipation (...) (29 years ago, 29-Mar-96, to lugnet.robotics.handyboard)
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