The medium frequency power supply of induction heating is one of solid state supplies which is composed of the high-power thyristors.

• 晶闸管中频感应电源是一种由大功率晶闸管元件组成的静止式电源，它将工频三相电源经整流、逆变转换成单相中频交流输出，应用于感应加热。