Subject:
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Re: MOTOR DRIVERS
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 25 Oct 1999 20:20:45 GMT
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Original-From:
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Larry Kruzan <LARRY_K@MTCOstopspammers.COM>
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Viewed:
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779 times
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> Question?
>
> When using a motor which will exceed the driver chip max current, will
> that fry the chip or the handy board?
>
> Paul
Hi Paul,
I think it would take out the chip, but I am currently doing this by
installing a oversize heatsink & fan to the controller chip and pulsing the
motor instead of constant current. Exceeding the max current capacity but,
limiting duration and increasing heat dissipation works. Sometimes. :o)
Larry
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Message has 1 Reply:
 | | Re: MOTOR DRIVERS
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| It won't necessarily fry the chip. L293s (and the TI equivalent) have a thermal protection mode. If the chip gets too hot, it will turn itself off. Most of the time, this protects the chip against over-current. However, it is still possible to fry (...) (25 years ago, 25-Oct-99, to lugnet.robotics.handyboard)
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