A SOFT START CIRCUIT FOR LIMITING OF A RUSH CURRENT IN INVERTER

摘要

The present invention relates to a soft start circuit for limiting inrush current of an inverter for a communication power supply, and to minimize the effects of transient inrush current generated when an OA device such as a computer, a computer monitor, or a printer is applied to a load. for,;When the output is shorted according to the output signal of the current detector 10 and the current detector 10 which detects the current flowing after the voltage of the communication DC power is boosted and converts it into a voltage, the gate is cut off and the inrush current according to the load is applied. In case of occurrence, the inverter high frequency switching circuit unit 30 having the characteristics of high frequency soft switching and the gate signal processor 20 controlling the switching elements of the inverter high frequency switching circuit unit 30 by receiving the output of the current detection unit 10. In the inverter for communication power supply comprising a), is connected between the current detector 10 and the gate signal processing unit 20, receives the output signal of the current detector 10, amplifies the output signal to the input terminal of the voltage comparator (C) A voltage comparator C for outputting an operational amplifier OP, an output of the operational amplifier OP, and a reference voltage, and comparing the same, and outputting a control signal to the gate signal processing unit 20. It is to provide a soft start circuit (A) configured to include.