The ET 220i AC/DC is a powerful and versatile inverter power supply for precision TIG and Stick welding. With its expanded input voltage capabilities, this unit provides maximum flexibility for weldable materials. Designed for exceptional welding performance, it offers a true square wave output and advanced balance and cleaning features. Its extended tungsten life on aluminum and magnesium alloys eliminates the need for continuous high frequency. This lightweight and portable unit includes high frequency start, automatic downslope, pulse, and memory function, all controlled by an embedded microprocessor. Housed in a robust aluminum metal case, the ET 220i AC/DC also boasts Tiptronic technology with 100 memory functions.