“电焊机自动断电器”在我市推广以来,我市一些工厂的工人和技术人员又不断地进行研究改进,使得“电焊机自动断电器”又有新发展。尤其是大连机床厂研究改进的方案最为简单,不用变压器和晶体管,仅用一个时间继电器和一个交流接触器,二个电阻和一个电容,电气 “Automatic welding machine off” Since the promotion in our city, some factories in our city workers and technicians and continue to carry out research and improvements, making “Automatic Welding Machine Disconnector,” there are new developments. In particular, Dalian Machine Tool Plant to study and improve the program is the most simple, without transformers and transistors, only one time relay and an AC contactor, two resistors and a capacitor, electrical