Digital inverse welder

The utility model relates to a digital inverse change welder, which belongs to welding equipment and comprises a bottom plate, an upper plate, a front panel, a back panel and a cover plate. The utility model is characterized in that the bottom plate is fixedly provided with a transformer, a diode and a radiator thereof, a reactor and an electromagnetic valve, wherein the upper plate is fixedly provided with capacitance, a three-phase rectification bridge, an integrated circuit board and a radiator thereof, and the cover plate, the upper plate, the bottom plate, the front panel and the back panel are fixed into an integral body. The utility model has the advantages that product consistency is good, stable performance is reliable, energy is saved, consumption is reduced, volume is small, welding performance is superior, control precision and reliability are high, and functions are rich.