Abstract: A magnetic assembly including a first magnetic core, a second magnetic core, a wire frame, multiple block magnetic cores, and a wire wrap is provided. The second magnetic core is assembled with the first magnetic core. The wire frame is disposed between the first magnetic core and the second magnetic core. The wire frame includes multiple accommodating spaces that are separated from each other, arranged at equal intervals, and have the same size. The block magnetic cores are respectively placed and fixed in the accommodating spaces of the wire frame in a drawer-like manner. The wire wrap is disposed around the wire frame, so as to wrap a part of the wire frame and the block magnetic cores in the wire wrap.

Abstract: A magnetic assembly includes a first magnetic core, a second magnetic core, at least one circuit board, and multiple pillars. The second magnetic core and the first magnetic core are assembled with each other to define an internal space. The circuit board is disposed in the internal space. The circuit board has multiple through holes separated from each other. The pillars are located in the internal space and respectively correspond to the through holes passing through the circuit board, and multiple air gaps are formed between the pillars or between the pillars and at least one of the first magnetic core and the second magnetic core.