We are offering inverter welding machine circuit board. 1. Suit for carbon steel, stainless, alloy steels and other require2. Adopted international latest igbt inverter technology. It is characterized by steady electrical arc, less spark, low electricity consumption, higher frequency, higher efficiency , fast dynamic response, lower noise and higher capability of anti-interference, smooth weld appearance;3. Light and handy : small in size , light in weight, portable, and novel design, unique in the world. You can take it to any place and in multi-direction for welding. It can apply in high altitude, the open air and inside and outside decoration. It is also especially suitable for decoration, repairing and diy welding;4. Electronic circuit design, handy power supply. 5. Automatic voltage pulsation compensation capability6. Perfect self-protective function in cases of over-voltage, low-voltage, over-current, over-heat; safe and reliable. 7. Applicable to acid and alkaline electrodes model: arc120input voltage: 50/60hz / 230v10%(1 phase)rated input current: max.18ano-load voltage: 75vefficiency: 85%input power: max.3.9kwcurrent range: 10-120aduty cycle: 35%@120a / 60%@100awelding rod: 1.5-2.5mmprotection class: ip21weight: 3.7kgdimensions: 29x13x19cmtrademark: sonscn/ oemstandard: ce.