A new kind of thvristor medium frequency power source is introduced,including the structure,the fundamentals and characteristics of its contravariant circuit.

• 在分析一般晶闸管中频电源的基础上，介绍一种新型的晶闸管中频感应加热炉。着重阐述其逆变电路的电路结构、工作原理及工作特点。