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分析了微机控制逆变式次级整流点焊钳的结构特点及工作原理，介绍了以８０３１为核心的微控系统进行ＰＷＭ调制及驱动ＩＧＢＴ，特别是控制器所具有的电极磨损补偿功能，更是该机的一个显著特点。
The structural characteristics and working principle of microcomputer-controlled inverter secondary rectification spot welding tong are analyzed. PWM modulation of the micro-control system with 8031 as the core and the electrode wear compensation function of driving the IGBT, especially the controller are introduced This machine is a notable feature.