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Question:

How to calculate the power and power factor of the power supply

Is the design of power modules should be calculated when the specific parameters

Answer:

The power supply, usually the DC power supply, causes the power factor reduction of the power supply because of the rectification. The calculation of power factor requires the following design assumptions: total input current, rectifier mode, output load rate, and so on. The actual calculation is very difficult, generally looking for typical circuit calculation, settlement, and then confirmed by the experimental test.
Ha-haThe design power, right?The power factor of power supply is one of the important indexes of designing power supply. It really needs to be calculated carefully.
Input power = input current, X input voltage, output power = output current, X output voltage. The power factor is the ratio of active power to apparent power. The power factor of the DC circuit is 1, while the AC circuit is less than 1.
The effective value of the voltage, the effective value of the X current = the apparent power (S). The active power ==UIcos Phi cos phi is the power factor.

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