I saw a Cooler Master Silent pro gold 550W with Active PFC of >0.99, and some others is >0.9.
Base on Wikipedia, Active PFC is also some sort of Electromagnetic filter.
Anyone know what's the PFC value all about?
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 Oct 16 2014, 12:32 AM, updated 12y ago
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1,221 posts Joined: Sep 2014 From: Malaysia  
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Oct 16 2014, 12:59 AM
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#2
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QUOTE(StereoPony @ Oct 16 2014, 12:45 AM) it's talking about the efficiency level. then is the 0.99 is higher or the 0.9 and 0.99 is the same value ? |
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Oct 16 2014, 01:19 AM
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#3
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QUOTE(lex @ Oct 16 2014, 01:11 AM) No, its is not. PFC stands for power factor correction. Generally in any mains AC system, the voltage and current are both out of phase. This effect causes low efficiency since both voltage and current are not aligned (e.g. when voltage level is present but the current level not equally present). PFC (power factor correction) tries to correct this effect by conjugating both voltage and current to (almost) the same phase. The closer both voltage and current in phase, the better the power factor correction... Thanks for the replies, what about the 0.9? some has 0.99. or they is the same? When both voltage and current are in phase then PFC will equal "1". That "0.99" is almost as close as you can get to a perfect "1"...  |
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Oct 16 2014, 02:13 AM
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Oh, now i understand
 thanks |
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