... .Adopts Siemens IGBT,MOSFET Copper induction coil contain four types (Medium frequency,High frequency,Ultrahigh frequency,Double frequency) it is appliying forclasses of ... field and with CEpredominance as belows: 1.The induction heating equipment mains circuit adopts Siemens IGBT,MOSFET and ... any other new type induction heating machine. 2.Fast speed,low power consumption ...