Solve : PSUs?

1.	Solve : PSUs?
Answer» I have a power supply here where the Max. output wattage is 300W. +5V 30 Amps (Min. 1.5 Amps) +12V 15 Amps (Min. .8 Amps) +3.3v 20 Amps (Min. .5 Amps) -5v .5 Amps (Min. 0 Amps) -12v .5 Amps (Min. 0 Amps) +5v SB 2 Amps (Min. 0 Amps) I am familiar with WATTS law, but how all this adds up to 300W is beyond me........anyone want to throw me a bone Thanks300w is the max which the psu is rated at on all rails. If each rail was fully loaded (i.e. drawing max amp rating) then the psu would be well overloaded. The following is quoted from this site. Quote A common way to reach the power figure for PC PSUs is by adding the power available on each rail, which will not give a true power figure. This means that you cannot USE the PSU maximum rating on one rail, but only as a total. Therefore you can overload a PSU on one rail without having to use the maximum rated power. Hope this helps. yes it does help a little, thanks

Answer»

I have a power supply here where the Max. output wattage is 300W.

+5V 30 Amps (Min. 1.5 Amps)

+12V 15 Amps (Min. .8 Amps)

+3.3v 20 Amps (Min. .5 Amps)

-5v .5 Amps (Min. 0 Amps)

-12v .5 Amps (Min. 0 Amps)

+5v SB 2 Amps (Min. 0 Amps)

I am familiar with WATTS law, but how all this adds up to 300W is beyond me........anyone want to throw me a bone Thanks300w is the max which the psu is rated at on all rails. If each rail was fully loaded (i.e. drawing max amp rating) then the psu would be well overloaded.

The following is quoted from this site.

Quote

A common way to reach the power figure for PC PSUs is by adding the power available on each rail, which will not give a true power figure. This means that you cannot USE the PSU maximum rating on one rail, but only as a total. Therefore you can overload a PSU on one rail without having to use the maximum rated power.

Hope this helps. yes it does help a little, thanks

Solve : PSUs?

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