[simpits-tech] ATX Power Supply

[Andre Breytenbach]

--- Brian Sikkema <hangr18 at hotmail.com> wrote: > Guys,
> 
> I know this has been discussed before, but I have no
> idea when, so I couldn't find it in the archives.
> Anyway, I'm just wondering what you need to do in
> order to get an ATX power supply to run without a
> load. I've got one I'd like to use for a
> non-computing application, I need something for the
> sense line I think.
> 
> Brian

Brian
You need to have a load on both the 3.3V and 5.0V
lines for the PSU to work the way it should - ie.
regulate it's output voltages within spec. Without a
load the 3.3V and 5V lines they may go to high, while
the 12V lines may be too low.
If your circuit draws 1 or 2A from 3.3 and 5V, you
should be OK.
The 5VSB line has 5V at 0.5 to 1.5A - depending on the
specific PSU - at all times the PSU is plugged in and
switched on - nice to power the core part of the
circuit.

Hope this helps

Andre SimNut



	
	
		
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