new welding machine. ARC-140 series inverter DC/MMA welderCharacteristic: Advanced invert technology, ... compensate ability, anti-power supply fluctuation, steady welding current, reliable performance... Small DC arc welder uses scale trust control technology, single knob ... operation. No load waste less than 100W,compared with traditional welder,energy saving up to 50%. Invert frequency up to 100KHZ ...