Terminal Copper Wire Spot Welding Machine , Stainless Steel Spot Welder DESCRIPTION MF DC Inverter Spot Welding Machine is a set of advanced welding machine with wide application. The welding tranformer is in small size but the output enerThe three-phase power supply, through rectified by a special inverter, is converted into 1000Hz AC voltage and then is transmitted to a medium frequency transformer so the current is rectified in order to supply DC welding current. The