9/7/2023 0 Comments How does psu zoom work![]() Switching clumps a few actions together to achieve the same effect: allow electricity to flow through to the rest of the power supply. Active PFC uses control circuitry and transistors, or active electric components. Passive PFC uses inductors, a passive electric component. ![]() There are two types of power factor correction: passive and active. While this sounds similar to efficiency, efficiency is an inherit component of electronics that cannot use all of the electricity to do useful work and dumps what it can’t use as heat. Power factor correction aims to get this ratio as close to 1 as possible. Power factor is the ratio between the sum of the active and reactive power (called apparent power) and the active power itself, and is always lower than 1. Reactive power is power that works on components such as capacitors and inductors to charge them up, with no work done on the actual load. Active power is power that’s being used on resistive loads, like turning a motor. There are two types of power in AC circuits: active and reactive power. Power factor is a phenomena that happens with AC circuitry. High-quality power supplies will keep ripple to a minimum.Īs an aside, the ATX specification calls for no more than five percent ripple on the 3.3V, 5V, 5V_SB, and 12V lines. The amount of ripple depends on the quality, capacity, and type of capacitor. The lowest and highest points in the saw-tooth form what is known as ripple. This is because the capacitor can only be charged up when the voltage of the rectified output reaches a certain point to the peak voltage. Notice that on the output, there’s a sort of saw-tooth pattern.
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