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.