Abstract: A touch key structure includes a touch panel including a key area at a front side of the touch panel, a circuit board provided behind the touch panel and including a sensing electrode corresponding to the key area, and a conductive medium provided between the key area and the sensing electrode.

Abstract: A touch key structure includes a touch panel including a key area at a front side of the touch panel, a circuit board provided behind the touch panel and including a sensing electrode corresponding to the key area, and a conductive medium provided between the key area and the sensing electrode.

Abstract: The present disclosure provides an electromagnetic heating device, comprising: an electromagnetic heating unit, an infrared heating unit and a MCU. The MCU is coupled with the electromagnetic heating unit and the infrared heating unit, so as to control the electromagnetic heating unit and the infrared heating unit to heat individually or simultaneously. The electromagnetic heating device of the present disclosure, since it comprises an electro electromagnetic heating unit and an infrared heating unit, the heating of the heating appliances of different materials can be performed, the application thereof is wide and unrestricted. In addition, since the infrared heating unit is comprised, the maximum heating power thereof is not limited by that of the coil disk.

Abstract: Disclosed is an electromagnetic heating control circuit, comprising a control chip, a rectifier filter circuit, a resonant capacitor, a switching transistor, a drive circuit, and a synchronous voltage detection circuit. The switching transistor comprises a first end, a second end, and a control end. The first end is connected to a positive output end of the rectifier filter circuit by using the resonant capacitor. The second end is connected to a negative output end of the rectifier filter circuit by using a current limiting resistor. The control chip comprises a positive phase voltage input end, a negative phase voltage input end, a voltage detection end, and a signal input end. The positive phase voltage input end and the negative phase voltage input end detect voltages at two ends of the resonant capacitor by using the synchronous voltage detection circuit. The signal output end is connected to the control end by using the drive circuit.

Abstract: The present disclosure provides an electromagnetic heating device, comprising: an electromagnetic heating unit, an infrared heating unit and a MCU. The MCU is coupled with the electromagnetic heating unit and the infrared heating unit, so as to control the electromagnetic heating unit and the infrared heating unit to heat individually or simultaneously. The electromagnetic heating device of the present disclosure, since it comprises an electro electromagnetic heating unit and an infrared heating unit, the heating of the heating appliances of different materials can be performed, the application thereof is wide and unrestricted. In addition, since the infrared heating unit is comprised, the maximum heating power thereof is not limited by that of the coil disk.