... , and stable welding current. ZX7-IGBT Controlled Inverter DC Arc Welder Advanced Technology- Using IGBT as the switch element- ... resisting network wave, fast dynamic response, good arc-striking ability, less spatters, stable welding arc, low noise, and seam formation.- Suitable ... design can increase the efficient work time of the welder, prevent IGBT from dewing and dust, and improve the reliability ...