Microwave oven circuit, method of controlling microwave oven circuit, control device and microwave oven

摘要

The present invention provides a microwave oven circuit, a microwave oven circuit control method, and a control device and a microwave oven, the microwave oven circuit includes a magnetron and an inverter circuit that drives and operates the magnetron, and the control method includes: When it is necessary to start up the inverter circuit, it is controlled to detect the zero cross of the electric signal supplied to the microwave circuit and to supply the inverter circuit when the electric signal reaches the zero cross. And when a power supply period of the inverter circuit reaches a first predetermined period, a first power signal having a frequency lower than a target frequency is input to the inverter circuit, and a current in the magnetron is detected. And when the current in the magnetron reaches a predetermined current value, The road, including a method comprising inputting a second power signal having a frequency equal to the target frequency. The technical solution of the present invention can reduce the voltage across the bridge rectifier when the inverter is turned on and avoid damage to the bridge rectifier due to the voltage across the bridge rectifier being too high.