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指出了在空载电压和输出电流相同的情况下，利用Ｌ－Ｃ谐振电路可使焊机输入容量降低２０％，达到节能目的。介绍了所研制的节能交流弧焊机的结构及实测数据
It is pointed out that under the condition of no-load voltage and output current, the input capacity of welding machine can be reduced by 20% by L-C resonant circuit to save energy. The structure and measured data of the AC arc welding machine developed are introduced