My motor ratings are 24V 180W. meaning in no load case it draws 7.5A.
Hi all, This is my circuit for my H-bridge. I've use opto to seperate the ground between the H-bridge and my PIC microcontroller. I wanna add one small resistance resistor below the H-bridge, and wan to detect the voltage accross the resistor by performing ADC function. If the voltage larger than certain amount, the controller will off all 4 MOSFETS.I know i need to common the ground between H-bridge and opto for this function.
-If i do like that, will it be useless that i use opto, coz the ground is commoned instead of separated?
-If I common the ground to perform ADC, will the back emf or the current damage my controller although i use opto? WIll the high current somehow flow back to my controller from the ground and damage my circuit?