Full-digital control system to realize precise control and stable arc length during welding. Great reduction in metal loss obviously enhances the welding efficiency and energy saving effect. Closed loop feedback control, constant voltage output, workable under network voltage fluctuation within ± 15%. Inverter frequency id 35 KHZ, greatly reducing the volume and weight of welder. Unique dynamic characteristic control circuit is used in gas shielded arc welding, stable arc, little spash, good ahping, efficent welding.Switching frequency is beyond audiorange, which almost eliminates noise pollution. Perfect For Home, Auto Repair Shop & Other Welding Shop.