I'm driving the Relays from ULN2003 ,, It has a built in free wheeling diode ...
I have no problem when powering the Micro-controller from another supply ( I had used the 5 Volts form the PICKit 3 ) ,, the problem is that I can't do this in the final project .. It's required that I must use only 1 DC supply which is as I said 48 V and 40 A ...
I'm not responsible for the power supply design so I don't have the schematics now .
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