Steven
Member
|
Update! I just tested the power supply I mentioned in the post above. I found that it's very close to an ATX v2.0 power supply with an EPS12V connector. The only case I found where this power supply does not conform to the ATX specification is that the +5VSB (5-volt standby) does not supply power when the power supply is turned off by opening PS_ON. That's obviously because these are meant for a server chassis where off means off. It also has 2 4-pin connectors that fit an ATX12V plug, but are not wired as ATX12V, but are wired with +12v and +5v, obviously for a disk drive. I guess they figured that if you needed an ATX12V, you could just plug into half of the EPS12V.
So, yes, it will work as a 12V power supply. In addition to the $12 power supply, you need to buy a MOLEX 39-01-2240 ($1.33 from Mouser) and an 8-pin EPS12V connector. (It might be a MOLEX 39-01-2080, but I'm not sure about that.)
Advantages:
Cheap ($12); small (1.5" x 4" x 8"); 450W; probably reliable (SGI).
Disadvantages:
Slightly more trouble to wire (need to buy Molex connectors and crimp); noisy fan.
Oh, yes, did I forget to mention the fan? It seems to have 2 speeds: slow (noisy) and fast (very noisy). When idling with no load, it runs in slow speed. I wasn't able to put enough load on it for long enough to get it to switch to high, but I know it has a high speed because it spins at high for a few seconds when you power it up.
In summary, this is a really good value, but I would only use it if the fan noise can be muffled or where noise isn't a problem.
____________________
LOR user since 2007
|
1 2 
