Multifunctional TIG/MMA/CUT 3 in 1, easy to operate, portable, durable Technical data of plasma welding ... /220 duel input voltage -Our multi-function welders are made with advanced inverter technology -High frequency(as high as 100HZ) -High ... is raised by over 30% -Working with TIG/MMA, output current is constant current -Working with CUT, due to rapid-circulation, turn ...