Hello, I have been working on hacking together a DC power supply out of a computer PSU. So far so good, already have most of it put together however we already know these things tend to get hot, and due to lack of room inside the unit I had to replace the fan for a Scythe Big Shuriken 2.
It is rated at 12 volts with 0.39 amps input current, while the original fan was 12 volt 0.35 amps.
Several questions:
Should it be installed in such a way that it takes hot air out or inserts cool air in? Regardless there should be air flow between the fan and one of the walls of the unit.
The second question is that I have 3 potential wires to hook the fan to:
-A +12 volt able to deliver up to 17 amps (two rails)
-A -12 volt with up to 0.8 amps
-A 12 volt difference inside the PSU, presumably able to deliver at least 0.35 amps.
I'd rather not use the one inside the PSU specifically made for the original fan, but I would like to use either the -12 volt rail or the +12 volt rail.
Is it possible to connect a -12 volt rail instead of the +12 volt? (obviously with the ground of the fan hooked to the -12 volt) And is it likely that I would fry the unit with any of the 3? It is impossible for me to test it at 12 volts for the moment as I don't have anything that can deliver such an amount of electric tension.