I wanted to ask the question about two parallel power supplies. I was asked by a friend if these would be a good idea Add2PSU
At first thought it looks very simple and good idea to connect 2 ATX PSUs in parallel, and let them share the load for more power and redundancy (in case of failure in one of them).
The problem is, ATX power supplies can vary quite a bit (more than a few mV) One can be 11.9V one can be 12.6V. That can cause voltage drawn from one power supply to another, which can be even dangerous.
Maybe if there was an inline diode I guess on each rail. The question is about the diode voltage dropdown, and the need to deal with the heat (450W could come over the diode).
I don't really know much about the guts of how ATX power supplies are regulated/output, but since these put out high current I wanted to be safe and ask where people would know
Thanks for any input