A plurality of winding parts are wound around teeth of an iron core with insulators disposed therebetween, and a printed wiring board is electrically connected to the winding part with a plurality of terminal pins. Each terminal pin is extends along an axial direction of the iron core and is attached to one of the insulators. An end portion of each winding part is wound around one of the terminal pins, and the terminal pin is soldered to the printed wiring board together with the end portion of the winding part. The terminal pins extend through hole portions of the printed wiring board.