... the standard for Inverter technology advancement.Reactive power correction, inverter, soft switch(IGBT) technology, square wave power supply;2. ... protection, over-current protection, under-voltage protection;5. DC welder suitable for stainless steel, alloy steel, carbon ... to shock loading,nondeformable.TIG200ADC:welding machine/high frequency welder/electric welding machine IGBT DC/AC inverter TIG ...