tying two switching suppplys together?

[HapticZ]

dc output switchers

since most switchers isolate the inputs from the outputs, can two separate
board outputs be paralleled together or should i use a diode summ point to
prevent sinking current back into one? say i get two 12v 2.5 amp switchers,
can i make an equivalent 5 amp from them?

 

[Don Bruder]

dc output switchers

since most switchers isolate the inputs from the outputs, can two separate
board outputs be paralleled together or should i use a diode summ point to
prevent sinking current back into one? say i get two 12v 2.5 amp switchers,
can i make an equivalent 5 amp from them?

Similar to you, I wanted to take a handful of switching PSs scavenged
from about half a metric buttload of old computers that had outputs
rated for 12 volts @ 7 amps each, and combine them to get a 12 volt @ 50
(+/-) amp supply for use in powering a stepper motor that wanted to be
driven with 12 volts @ 40 amps.

I pretty much got a chorus of "No way to do that - they'll eat each
other" responses.

Ended up powering the rig I was trying to build from a car battery - It
actually ended up being cheaper and easier to go that route and add a
battery charger, than buying or building a 12 @ 50 power supply. Go
figure!