Abstract: An electrical transformer having primary winding segments and secondary winding segments interconnected, respectively, by first and second multilevel printed circuit boards disposed in a pair of overlaying planes and additional segments disposed perpendicular to the overlaying planes.

Abstract: An electrical transformer having a core disposed between a pair of dielectrics. The first dielectric has a plurality of first electrically isolated electrical conductor segments disposed on each one of a plurality of electrically isolated levels of such first dielectric. The second dielectric board is disposed over, and is in registration with, the first dielectric. The second dielectric has a plurality of second electrically isolated electrical conductor segments disposed on each one of a plurality of electrically isolated levels of such second dielectric. The core has an aperture therein. The aperture extends between the first and second dielectrics. A dielectric body is disposed in the aperture. The body has disposed therein a plurality of third electrically isolated electrical conductor segments. First ends of the third electrically isolated electrical conductor segments are electrically connected to the plurality of first electrically isolated electrical conductor segments.