Re: Using a PC PowerSupply as a bench power supply.

On Apr 28, 9:51 am, sid <sidwe...@xxxxxxxxxxx> wrote:
Thanks for all the input !
One last question, no where did I see the discussion of how much
current can safely be drawn from each circuit.
Is there no hard-set rules on this or just a fucntion of the size of
your PS.

Power supply should list a maximum current for each voltage. A
number that decreases when other voltages provide higher currents.
How much for each voltage when all lines are loaded? Charts for this
are found in the ATX power supply standards. Easier is to just use a
larger wattage supply. Smarter is to look at those charts anyway to
learn from the experience.

How much power on each circuit - each wire? Bottleneck is defined
by Molex connector specs. Typically 6 amps per wire - less if
concerned for contact resistance, temperature, or environmental
degradation - which would be irrelevant as a bench power supply.
.

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