Motor Back Emf

From: Devyn (devyntt_at_yahoo.com)
Date: 06/07/04 

Date: 7 Jun 2004 10:36:01 -0700

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

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