HELP!!!!!!! I managed to build the L297 chopper circuit mentioned in the link. I couldn't get the IRLZ44 here so I replaced it with the IRF510, but there is a problem.
In the test setup, the motor does not rotate and the Mosfets are getting really really really HOT. I have checked the board with the schematics time and time again and cannot find the fault!.. I have traced the signals using a digi V meter and can pick up the pulses generated by the L297 all the way to the end of the 7409.
Any suggestions the direction I should be taking!
Thanks..
MKS
P.S. My motors are 5.2V 1.4A(per phase) 6 wire unipolars!!!!! |