A control circuit which can preset,display and count welding tem pe rature cycles,and can turn/off supply automatically by welding temperature lim its is introduced in this paper.

• 介绍了一种可对焊接温度循环次数进行预置、显示、计数,并能根据温度上下限及循环次数自动接通/切断加热电源的控制电路。