[Moved] regarding back emf suppresion

[rimpul]

hello ,

i am using a microcontroller (atmega64) to controller the induction motor but due to back emf my code in the controller gets rebooted....i have connected diodes in parallel to avoid the back emf..,but the back emf is not getting suppressed....now my doubt is to use other diodes or to use any capacitors to suppress the back emf??


regards
rimpul

 

[Tahmid]

Make sure the supply line is properly decoupled. Also check here:
https://www.edaboard.com/threads/224765/#post960901

For the ATMEGA you don't need a pull-up resistor on the RESET pin, but have a 0.1uF capacitor connected.

Hope this helps.
Tahmid.

 

[rimpul]

dear tahmid,

i am using relay to trigger the start and stop of the motor,so it is possible to suppress the back emf across the relay itself or should i use any diodes ??

regards
rimpul