Power-factor controller and test device including the same

摘要

A power factor adjustment device is provided which can automatically adjust the power factor of the test power applied to the test device in the test device. The power factor adjusting device includes a switch module having a plurality of switches connected in parallel to a first input power source input from the outside, a switch driver for turning on at least one switch among the plurality of switches according to a control signal, Wherein a plurality of elements are connected to each of the switches and the power factor is adjusted by varying the total impedance by the plurality of elements along with the element connected to the at least one switch turned on by the switch driving unit, And a load module that adjusts the size of the first input power and outputs the second input power.