Automatic potential device who steps up and step down

The utility model discloses an automatic potential device who steps up and step down, including casing, transformer, memory, liquid crystal display, the inside protection switch that is provided withof casing, protection switch one side is provided with the power, protection switch keeps away from power one side is provided with the controller, controller below be provided with the motor with thememory, the controller is kept away from protection switch one side is provided with the transformer, the transformer includes input, coil and output, the transformer is kept away from controller oneside is provided with the load, the casing openly is provided with liquid crystal display, liquid crystal display one side is provided with operating keyboard. Beneficial effect lies in: the utilitymodel discloses not only can realize boost and voltage decrease's function, can also change the output valve of voltage according to the actual demand, be fit for multiple electronic equipment, simultaneously the utility model d