IGBT welding machine 1.IGBT inverter tech,stable performance 2.Stable welding arc, ... welding machine1.IGBT inverter tech,current-mode control,reliable quality,stable performance2.Closed loop feedback control,constant voltage output,workable under network ... than 0.8 mm6.Small size,light weight,simple operation,economical and practical7.Great reduction in magnetic loss obviously enhances the welding ...