Patent ID: 7154365

Claim:
A transformer, comprising: a printed circuit board comprising a receiving hole and an upper surface; a bobbin inserted into the receiving hole of the printed circuit board, the bobbin comprising: a winding axis around which is wound a coil, the winding axis being perpendicular to the upper surface of the printed circuit board; a lower portion at one end of the winding axis; a plurality of pins connected to the lower portion, each pin comprising a horizontal support portion that extends in parallel contact with the upper surface of the printed circuit board to support the bobbin on the printed circuit board, wherein a diameter of the receiving hole is minutely larger than a diameter of the portion of the bobbin inserted therein, to hold the bobbin, each pin further comprising a fixing portion extending from the horizontal support portion in a perpendicular relation to the upper surface of the printed circuit board to extend into an opening in the printed circuit board.