Abstract: An on-chip transformer circuit is disclosed. The on-chip transformer circuit comprises a primary winding circuit comprising at least one turn of a primary conductive winding arranged as a first N-sided polygon in a first dielectric layer of a substrate; and a secondary winding circuit comprising at least one turn of a secondary conductive winding arranged as a second N-sided polygon in a second, different, dielectric layer of the substrate. In some embodiments, the primary winding circuit and the secondary winding circuit are arranged to overlap one another at predetermined locations along the primary conductive winding and the secondary conductive winding, wherein the predetermined locations comprise a number of locations less than all locations along the primary conductive winding and the secondary conductive winding.

Abstract: A custom shoe, in particular an orthopedic shoe, and a method of producing the same, in which a shoe upper (1) with an opening (11) for an insole is produced, is drawn with a sewn-in insole over a last (8) and is completed to form the shoe by joining the upper (1) to a sole (17). Formation occurs more easily and inexpensively by addition of an insert (6, 6?) of an elastic textile material provided in the opening (11) and/or at a lower border of the upper (1) adjacent to a sole region. The upper (1), with the elastic material, is drawn over the last (8), stretching the elastic insert (6, 6?). The elastic insert (6, 6?) is fixed in the stretched state by applied, non-elastic material.