Patent ID: 8368344

Claim:
A refrigerator comprising: a voltage detector that measures a voltage of an input power; a rectifying and smoothing circuit that rectifies the voltage of the input power through a half wave rectification or a full wave rectification, and that smoothes the rectified voltage of the input power; a switch coupled to the rectifying and smoothing circuit, the switch changing a current flow through the rectifying and smoothing circuit; and a controller that compares a voltage magnitude of the input power inputted from the voltage detector with a preset reference voltage, wherein the preset reference voltage is a stored intermediate value between a first standard wall outlet voltage and a second standard wall outlet voltage, wherein the controller controls the switch such that the voltage of the input power is rectified through the full wave rectification when the voltage magnitude of the input power is greater than the preset reference voltage, and wherein the controller controls the switch such that the voltage of the input power is rectified through the half wave rectification when the voltage magnitude of the input power is less than the preset reference voltage.