1, electromagnetic heating principle. High-frequency current is generated by the electronic circuit board, and high-frequency alternating magnetic fields are formed on both axial sides of the circular disk through the spiral magnetic induction coil. When the cooking pot is in the magnetic field range, the pot cuts the alternating magnetic field lines and generates alternating current (i.e. eddy current) at the bottom of the pot. Vortex makes iron molecules in the pot move irregularly at high speed, and the molecules collide and rub with each other to generate heat energy, which makes the pot itself heat up at high speed and realize cooking.
2. The principle of high frequency electromagnetic induction heating. Alternating current is rectified into direct current by rectifier circuit, and then the direct current is converted into high frequency and high voltage current with frequency of 20-40KHz.