Re: Motor Back Emf
From: scada (scada_at_optonline.net)
Date: 06/07/04
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Date: Mon, 07 Jun 2004 22:59:38 GMT
"Devyn" <devyntt@yahoo.com> wrote in message
news:e2769bfd.0406070936.720a217b@posting.google.com...
> Greetings Everyone!
>
> I am trying to control 3 DC motors and a stepper motor. All of them
> need to be biderctional. I use a 5 V supply for the motors. However i
> am having a problem with the back emf. It burns out the
> microcontroller. I tried diodes and H-bridge(L293D). The back emf
> generated is close to 10V.
>
> Can anyone please suggest an interphase for the microcontoller-motor?
>
> Thanks in Advance
> Devyn
Use separate PS for motor drive and Microprocessor. Use optic Isolators from
Micro output to HBridge drive circuits.
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