I am making a PCB board with 4 relays controlled by a PIC microcontroller as shown. The board consists of components that are working on 5V DC and the relays that are connected to 110VAC. I had a few doubts regarding the ground plane:-
Q1. If I make a ground plane that covers the entire PCB, will the AC traces cause any problem in the working of the board?
Q2. Should I make a ground plane on the entire board or just for the DC portion of the board? Which will be better?