| 摘要 |
PURPOSE: A magnetron control circuit of a microwave oven is provided to improve the reliability of system by cutting off a control signal containing noises by using a noise sensor. CONSTITUTION: A magnetron control circuit of a microwave oven comprises an on-off relay(20) for controlling the operation of magnetrons(10); a switching unit(30) for switching an on-off operation of the relay; a micom(40) for outputting a control signal for driving the magnetrons; and a noise sensor(50) for detecting noises from the control signal outputted from the micom and cutting off the output of the control signal of the switching circuit if the control signal contains noises.
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