Patent ID: 6335519
Filing Date: 2002-01-01
Classification: H05B

Abstract:
A microwave oven, comprising a power supply part supplying a commercial alternating current power, a rectifier and filter part rectifying and filtering the commercial alternating current power, a high voltage transformer generating a high voltage with the direct current power from said rectifier and filter part, a magnetron generating electromagnetic waves by means of the high voltage supplied from said high voltage transformer, the microwave oven further comprising:a control signal generator part generating a control signal; an inverter part converting the direct current power supplied from said rectifier and filter part into an alternating current power with a high voltage; said high voltage transformer converting said control signal; and a control part determining whether said control signal converted by said high voltage transformer is within a predetermined range, and preventing said control signal from being applied to said magnetron where the control signal is determined to be beyond the predetermined range.