Patent ID: 8054154

Claim:
A planar transformer defining at least one turns ratio, comprising: at least a first electrically conductive trace arranged on a first generally planar substrate that includes a major and a minor axis, the at least a first electrically conductive trace and the first generally planar substrate being at least partially covered by a first insulating sleeve, wherein the at least a first electrically conductive trace ends at a first set of connector ends that extends from one end of the aligned major axis; at least a second electrically conductive trace arranged on a second generally planar substrate that includes a major and a minor axis, the at least a second electrically conductive trace and the second generally planar substrate being at least partially covered by a second insulating sleeve, wherein the at least a second electrically conductive trace ends at a second set of connector ends that extends from a distal end of the aligned major axis; wherein at least one end of the first insulating sleeve is interleaved and contacting at least one end of the second insulating sleeve; wherein the planar transformer is comprised of a fixed set of planar transformer components; wherein the first and second set of connector ends are grouped substantially together at one side of the first and second generally planar substrates; and, wherein the at least one turns ratio is adjustable between first and second turns ratio by invertibly rearranging the fixed set of planar transformer components.