... simple circuit, compact, light, high efficiency and energy saving. Electrode welding machine Advanced invert technology, simple circuit, compact, light, high efficiency and ... than 100W,compared with traditional welder,energy saving up to 50%.Invert frequency up to 20KHZ, high speed of dynamic ... (V) AC220V 15% AC380V 15% AC380V 15% Frequency(Hz)50/6050/6050/60Rated input power capacity(KVA)79.612.8 ...