IGBT technology DC fan cooled,lightness,energy saving & portable Anti-stick lift TIG/MMA ARC force,no noisy & little spatte 1.Main Components:1).2pcs 470UF capacitors2).1pcs 20A relay3).4pcs 40N60 IGBT transistor4).4pcs 60puo3 fast recovery diode2. Single phase,fan-cooled Inverter MMA and TIG welding machine.In this welding process,an electric arc is created between a coated consumable electrode ...