Patent ID: 7884692
Filing Date: 2011-02-08
Classification: H01F

Abstract:
1. A transformer, mounted on a circuit board, comprising: a winding set, including a bobbin, a primary winding and a secondary winding, wherein the primary and the secondary windings are wound on the bobbin, and the primary winding has at least a first output terminal; a magnetic core set, including a first magnetic core and a second magnetic core, wherein the winding set is sandwiched in between the first and the second magnetic cores; and an insulation base, including an accommodation space, at least a pin, a side wall, a bottom plane, a first extension portion and a second extension portion, the side wall having an opening and a valley mounted thereon, the bottom plane defining the accommodation space with the side wall, the first extension portion outwardly extended from the edge of the opening and having the pin mounted thereon, and the second extension portion located at a position corresponding to the valley, wherein the winding set and the magnetic core set are accommodated in the accommodation space, and the first output terminal of the primary winding is connected with the pin for further electrically connecting to the circuit board.