What is PFC of MEANWELL Power Supply?

Date：2016-03-09

What is PFC of MEANWELL Power Supply?

                                     Date:2016.3.19 CIYLED

       CIY LED always provides MEANWELLL LED Driver at very competitive price.

One day one HK client asked one of our top sales "Output: 10W High PFC led driver",

then our engineers explained us what is PFC at QQ chat group as following:

       PFC (Power Factor Correction) power factor correction, mainly to improve the power supply
input side effective power and apparent power ratio. Usually without PFC circuit models,
the input power factor usual from 0.4 to 0.6, and with active PFC circuit can reach above 0.95,
the correlation formula is as follows:
              Apparent power = Input voltage x Input current (VA)
              Effective power = input voltage x current x power factor input (W)

For sake of environmental protection, to guarantee the generators

can supply stable electricity market demand, the power company power plants
must produce more power than apparent power of electricity, and the actual use of electricity
is the effective power. If the PF(power factor) is 0.5, indicating that  more than 2VA
apparent power generators to supply power 1W security needs, its very poor
effectiveness of energy. Conversely, if the power factor improved to 0.95,
the power generator sets as long as the company issued more than 1.06VA
power supply 1W energy demand would have no issues, will be better efficiency for energy.

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