1. AC/DC and pulse output, 2. 60% duty cycle, 3. TIG/MMA ... /CUT 4. reasonable price for muti-function welding machine FEATURES of Multi-function AC/DC ... machine SUPER-200P:1.Reactive power correction, MOSFET, AC/DC or pulse output , soft switch, inverter with ... 100 kHz high frequency;2.Compact structure, stable welding current, steady and intensive ...