Pfc Power Supply Meaning

Power factor correction is a circuit design technique to increase the power factor of a device so that it approaches 1 or unity power factor.

Pfc power supply meaning.

But active pfc is also more efficient in the use of power compared to passive pfc. Pfc power factor correction. The program got its name from the 80 minimum efficiency that a power supply needs to exhibit for its first level at 20 load 50 load and its full rated load along with a power factor pf of. All of the cables come pre connected to the psu and cannot be removed.

The complexity in the method used in power factor correction by active pfc makes it more expensive than passive pfc. This reduces the input rms current and apparent input. What is power factor correction. The power factor of a power supply is technically the ratio of the real power consumed to the apparent power voltsrms x ampsrms and is a decimal between 0 and 1 0.

Apexgaming gaming power supply 80 plus certified active pfc ultra silent anti vibrating fan 80 plus gold certified 750w fully modular psu 4 6 out of 5 stars 159 thermaltake smart rgb 700w 80 256 color rgb fan atx 12v 2 3 kaby lake ready power supply 5 yr warranty power supply ps spr 0700nhfawu 1. Switching power supplies without power factor correction draw current in short high magnitude pulses. These pulses can be smoothed out by using active or passive techniques. A pfc power supply is a device that ensures power for electronic equipment is efficiently used.

The power factor correction is a technique of increasing the power factor of a power supply. Perfect power factor which in this case is being achieved by the computer s pfc power supply is 1 0 unity meaning 100 of the power is being used for useful work. 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. The power factor correction shapes the input current in order to maximize the real power from the ac supply.

Reactive power has no real value for an electronic device but electric companies charge for both true. Ideally electrical equipment should present a load that emulates a pure resistor meaning that the reactive power would be zero. Switchmode power supplies without power factor correction pfc tend to draw the ac input current in short bursts or spikes relative to the line voltage as shown in fig. One component that isn t always cable management friendly is the power supply standard power supplies come with a big bundle of cables and not all of them are necessary to use in every system.

Depending on the load and power factor of the network the power factor controller will switch the necessary blocks of capacitors in steps to make sure the power factor stays.