Patent ID: 6735064
Filing Date: 2004-05-11
Classification: G05F,Y10S

Abstract:
An inrush current suppressing device for suppressing occurrence of inrush current, comprising:a current limiting element for limiting an input current flowing to a power supply circuit in accordance with an input current limit value; a current detecting section for detecting the input current flowing through the current limiting element and converting the detected current to a voltage signal; a sloping voltage signal generating section for generating a sloping voltage signal proportional to a time elapsed after start of power supply; and an input current limiting section for comparing the voltage signal with the sloping voltage signal, and for outputting the input current limit value for suppressing the inrush current and also gradually increasing the input current limit value with rise in the sloping voltage signal during a period in which the voltage signal is higher in level than the sloping voltage signal after the start of power supply.