Model: MMA250 DS IGBT * IGBT inverter technology, with high performance reliability. * High frequency inverter that enhances the welding efficiency and energy saving effect. * Easy for arc star, liitle spatter. Stable current, good welding surface. * With high no-load voltage and good thrust compensatory fuction. * Small size, easy to move. * Wide use in working a loft, field work and interiodecoration etc.