What is PFC?

imported_fatal

Senior member
Feb 6, 2005
348
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PFC (power factor correction; also known as power factor controller) is a feature included in some computer and other power supply boxes that reduces the amount of reactive power generated by a computer. Reactive power operates at right angles to true power and energizes the magnetic field. Reactive power has no real value for an electronic device, but electric companies charge for both true and reactive power resulting in unnecessary charges. PFC is a required feature for power supplies shipped to Europe.
 

kranky

Elite Member
Oct 9, 1999
21,019
156
106
Originally posted by: Cheesetogo
Also, I don't see how many amps are on the 12V rail, where do I check that?

It says "Output: +3.3V@30A, +5V@28A, +12V1@15A, +12V2@15A, -12V@0.5A, +5Vsb@2.0A"

It's a dual-rail PSU with 15A on each 12V rail.


 

LTC8K6

Lifer
Mar 10, 2004
28,520
1,576
126
It's a marketing term largely when used with computer power supplies. It's not necessary and may be unwanted on a computer PS.