【摘要】 介绍了多功能IGBT逆变式弧焊机控制电路的设计思想和硬件结构，重点分析了TIG焊恒流内拐式外特性、SMAW焊恒流阶梯外拖式外特性、脉冲焊接电流、程序控制电路的工作原理。更多还原

【Abstract】 In this paper, design thinking and hardware structure on control circuit of versatile IGBTarc welding inverter are introduced in detail. Work principle of the control circuit that is responsible forrealizing external characteristics of constant current with gradual descent inward and stage descent outward,pulse welding current and procedure control is mainly analyzed.更多还原