... up to 50%, Toshiba MOSFET Inverter DC TIG200 argon Welding machine(MOSFET) welding equipment1.Advance inverter technology,small size,simple circuit design,light ... work normally when the voltage changes±10%5.adopt high frequency arc starting,pluse strike,perfect performance,adequate welding current,good quality with ... than 50 sets.Accessarywelding gun,earth clamp and brush. argon welding machine TIG200