Transformer for power supply

The utility model relates to the technical field of electric appliance elements, and discloses a transformer for a power supply, a front dustproof cover is pressed and covered on the front side of a core plate of an iron core, a rear dustproof cover is pressed and covered on the rear side of the core plate of the iron core, and the front dustproof cover, the iron core and the rear dustproof cover are in threaded fastening through four groups of tightening nuts which are symmetrically arranged in pairs. The front dust cover and the rear dust cover are symmetrically arranged in the forward direction and the reverse direction, and a winding assembly is installed in a frame of the iron core. According to the utility model, the iron core with the E-shaped structure is assembled on the winding assembly in a plug-in manner, and then the tightening nut is used for fixing the integrated bolt of the front dust cover, the iron core and the rear dust cover, so that on one hand, the assembly performance is simple and conv