Would it be over kill to use a receiving isolator (such as for RS232...ADM3251) for devices that run on the same power supply? For example, if I have a computer, everything would be powered off the same supply. However, there would be different boards with in the computer and they need to talk to each other. One would simply think that you would just hook all the grounds together, however, what if there are multiple ground points with in each board. For RS232, you have the ground in the cable that connects to the motherboard, but you also have the ground on the same board that connects to the power supply. Would this potentially create a ground loop since some boards would have multiple paths to ground?
Thanks!
Thanks!