1) Before the 1950s, the induction heating power supply mainly: the power frequency induction melting furnace, electromagnetic multi-frequency generator set, and electronic pipe oscillator type high frequency power supply. In the end of the 1950s, the appearance of the controllable silicon marked the beginning of modern power electronics of solid-state semiconductor devices. The emergence of silicon crystal waves has driven a rapid development of induction heating power supply and application. So far, in the range of intermediate frequency <500Hz ~ 10kz), the frequency sensing heating device in the thyristor has completely replaced the conventional intermediate frequency generator set and electromagnetic multiplier. Within the high frequency range, due to the limitations of parameters such as the switch characteristics of the thyristor itself, it is possible to achieve a large technical difficulty to develop the frequency band, which must be achieved by changing the circuit topology.
2) The end of the 1970s to the early 1980s, the combination of modern semiconductor microcomputer integrated processing technology and power semiconductor technology provides conditions for the development of new power semiconductor devices, and there is a large number of total-controlled power electronic semiconductor devices, which greatly promoted. Power electronics development, provides a solid foundation for solid super audio and high-frequency power supply.
3) In 1983, IGBT has further promoted the development of the induction heating power supply. The IGBT has integrated the advantages of MOS and bipolar transistors, with the advantages of pushing pressure, fast switching speed, easy drive, and after the maintenance problem is solved in 1998, high-power high-speed IGBT has become the preferred device of many heating power supplies, frequency Up to 100kHz, power up to MW power supply has been implemented

4) In the ultra-high frequency (100 kHz or more) frequency band, it has long been generated by the electronic pipe resonance converter. In the 80s, the rise of high-power semiconductor switching devices is an inverter high-frequency induction of components.