The -5V and -12V are probably fine with no load, but the +12V line should have at least the minimum required load (whatever that might be). Just use a suitable power resistor (power resistor means it won't fry into a molten lump) on the +12V line. In the absence of info on the PS label, I'd go for loading the +12V line with about 10% of its maximum power/amps. Use V = IR and P = IV to do the algebra to get the right resistance (ohms).
Also, along the lines of Adam's reply, you might have to signal back to the PS (by closing a circuit?) that "this motherboard likes you" - otherwise the PS might cut out.
Hartmut W Sager - Tel +1-204-339-8331, +1-204-515-1701, +1-204-515-1700, +1-810-471-4600, +1-909-361-6005
On 15 February 2016 at 15:39, Trevor Cordes trevor@tecnopolis.ca wrote:
Is it possible to use a standard AT (old style) computer power supply just for its +5v out? I have a project and I just need 5v with a beefy amount of amps, and I have lots of AT PS's around that would fit the bill, but I'm wondering if running a computer PS just for its 5v line might damage it somehow? There would be no load on the 12v (and other) lines. Anything I should worry about?
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