I recently bought a high-power 6" blower fan that needs +24VDC @ 15 Amps. I was thinking about a cost-effective way to generate this power, and I realized I have several old 400W computer power supplies laying around. Two are identical - they each have a single +12V rail rated for 22 amps. Here is my quesion: Can I link two PSU's in series to generate the required 24V? (Can I connect +12V from PSU1 to GND on PSU2, then power the blower from PSU1 GND to PSU2 +12V?) I am not very familiar with the inner-workings of the computer PSU, so if this is impossible for ____ reason (it will short out, etc) please let me know!
Thanks.