| 摘要 |
A low profile reactor or inductor with a spiral type of winding which conducts a high level of current for its allotted size. The present invention provides a unique two piece bobbin design in order to produce a reactor of this type in a small space with small dimensional tolerances. The two piece bobbin is designed to provide a connection to the interior terminal end of the reactor coil, which is normally difficult to accomplish because of the limited small size and area. A first bobbin piece defines a first bobbin flange, and the second bobbin piece defines a center post, providing a cylindrical winding surface, and a second bobbin flange. The center post is provided with a first recessed groove in the winding area, and the second bobbin flange is provided with a second recessed groove. A start terminal is positioned in the first and second recessed grooves below the surfaces thereof. A flat conductor reactor coil is wound upon the center post with one turn per layer, and the inner terminal end thereof is electrically connected to the start terminal. A ferrite core comprises a ferrite core base having a center post, and a ferrite core top. The first and second bobbin flanges are shaped to conform to the ferrite core base and top, with the coil being locked in place therein and prevented from rotating.
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