Folded planar Litz wire and method of making same
First Claim
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1. A method of constructing a planar litz wire comprising the steps of:
- providing a flexible printed circuit board (FPCB) having one or more fold lines;
locating a plurality of conductors on a side of the FPCB, the plurality of conductors being configured to be electrically in parallel with one another and each conductor of the plurality of conductors having an initial lateral position on the side of the FPCB; and
folding the FPCB at least once along the one or more fold lines to produce a folded structure;
wherein folding causes a first conductor of the plurality of conductors to at least partially overlap a second conductor of the plurality of conductors.
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Abstract
Several embodiments of a circuit device using principles of planar Litz wire construction are disclosed using flexible printed circuit boards on which a given set of conductors is located on one surface only. The FPCBs are folded at strategic locations to effectively cause conductors in adjacent parallel planes to effectively cross one another to realize the advantages of braided Litz wire conductors, but without the use of vias or circuit interconnections between opposite sides of any given FPCB or between different sections of a continuous FPCB wherein each section defines its own coil or coil set.
17 Citations
9 Claims
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1. A method of constructing a planar litz wire comprising the steps of:
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providing a flexible printed circuit board (FPCB) having one or more fold lines; locating a plurality of conductors on a side of the FPCB, the plurality of conductors being configured to be electrically in parallel with one another and each conductor of the plurality of conductors having an initial lateral position on the side of the FPCB; and folding the FPCB at least once along the one or more fold lines to produce a folded structure; wherein folding causes a first conductor of the plurality of conductors to at least partially overlap a second conductor of the plurality of conductors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification