Circuit for controlling Inrush Current and Power Supply using Circuit for controlling Inrush Current

摘要

rush current control circuit according to the present invention, a capacitor for smoothing the output to the input DC power source, and; The capacitor is operated by the DC power outputted from the inrush current to a power MOSFET, which slowly flows slowly by changing the resistance value between the source and the drain; Charging time constant adjusting means that determines the change in time, and by adjusting the time of the gate is charged at a constant voltage of the power MOSFET, the resistance value; Characterized in that comprises a. ; Here, the charge time constant adjusting means is composed of a resistor and a capacitor. ; Then, the power supply is used for inrush current control circuit according to the present invention, an AC power source, Take a rectifying that converts DC power; A smoothing unit for stabilizing the output DC power from the rectifying section; And a capacitor for smoothing the direct current output by the power input in the holding portion, is operated by the DC power outputted from the capacitor, and the power MOSFET so that the inrush current is slowly flowing the source and by changing the resistance value between the drain slowly, the charging time constant adjusting means is configured as a rush current control circuit that determines the time change of the resistance value and the gate of the power MOSFET by controlling the time to be charged at a constant voltage; Characterized in that it comprises a.