i'd like to build a system in which there will be step down modules that get their power from an ac-dc converter.
there are 5 modules connected to the ac-dc converter (each of them steps down to 5v/5a). 4 of the modules will power a peace of hardware that needs 5v / 3a the 5th module powers an arduino or something like this. i'm planning to input at least 24v (32 would be possible and preferred).
now the question: what power supply do i need? 220v ?a -> 24v or 32v ?a
i've been looking for calculators or discussions on this but it is a bit specific i guess. so if anyone can help me i'd be really thankful!
Thanks in advance!