Independent planar transformer

Details Independent planar transformer Independent planar transformer

2011-01-18

2011-01-18

Nguyen, Tuyen (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

Reexamination Certificate

active

07872560

ABSTRACT:
A high-efficiency independent planar transformer comprises a pair of up-and-down symmetrical soft ferrite magnetic cores; a primary winding comprising at least one printed circuit board each having a multi-layer structure having at least two layers to form the inductor winding with at least four turns; and two secondary windings comprising at least two planar copper plates or two printed circuit boards. The primary winding and the secondary windings are electrically connected to the main circuit board via terminals. By means of the unique output structure, in the primary winding, two kinds of different output connection structures of the inductor winding can be formed by upward disposing the component side or the solder side of the printed circuit board. In the secondary winding, the inductor winding outputs in series and parallel connections can be accomplished by means of the output terminals or the short-circuit connection with the main circuit board.

REFERENCES:
patent: 5952909 (1999-09-01), Umeno et al.
patent: 6211767 (2001-04-01), Jitaru
patent: 6628531 (2003-09-01), Dadafshar
patent: 2004/0257190 (2004-12-01), Peck et al.

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