Temperature and door induction circuit for microwave oven
A technology of induction circuit and microwave oven, which is applied in the direction of microwave heating, etc., can solve the problems of increasing the use capacity and cost of microcontrollers, and achieve the effect of reducing production cost and the number of ports used
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[0023] The specific implementation mode is given below in conjunction with the accompanying drawings, and the microwave oven temperature and door sensing circuit of the present invention will be described in detail.
[0024] figure 2 Provide the temperature door sensing circuit diagram of the microwave oven of the present invention. image 3 The induced voltage distribution diagram of the present invention is given.
[0025] As shown in the figure, in the microwave oven of the present invention, a port of a microcontroller is used for sensing the operating temperature of the cooling fan and for sensing the opening and closing of the door.
[0026] That is to say, the gate switch SW11 is connected to one terminal of the -12V power supply, and the other terminal of the gate switch SW11 is connected to the junction between the cathode terminal of the diode D11 and the resistor R12. The positive end of the diode D11 is connected to the connection point C, and the connection poi...
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