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Inrush current control circuit

[Category : - Computers and computer accessories ]
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An inrush current control circuit includes a first and second control units connected in series, wherein the first and second control units all have a current limiting resistor and switch connected in parallel. The current limiting resistor of the first control unit is used to prevent an inrush current generated at the moment an alternative current is supplied. The switch of the first control unit turns on based on the voltage of the capacitor, and current bypasses the first current limiting resistor. The current limiting resistor of the second control unit is used to prevent an inrush current generated at the moment an alternative current shifts from a high voltage level to a low voltage level or from a low voltage level to a high voltage level. The switch of the second control unit turns on based on the alternative current and current bypasses the second current limiting resistor.