Re: Another Power Supply Question

Jon,

Thanks for the info. We'll give it a try.

Bob

At 11:52 PM 8/18/99 -0500, you wrote:

>From: Jon Elson <jmelson@...>
>
>
>
>Bob Bachman wrote:
>
>> From: Bob Bachman <bobach@...>
>>
>> I want to use a pc power supply for a project. Some pc power supplies
>> won't run unless hooked to a motherboard? I know there is a 'power
>> made good' connection which feeds back from the mbd to the ps.
>> How do I make the ps think it's connected to a mbd?
>
>No, the power OK is a signal from the PS to the motherboard that
>it is OK to start operation. Mostly, these power supplies need a load
>on at least the +5 and +12 outputs. If the load is too small, the voltage
>will surge past the desired voltage and cause the overvoltage crowbar
>to trip. You will probably need to draw a few amps at +5V and at
>least a half or one amp at +12V.
>
>Jon
>
>
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