Patent ID: 8350659

Claim:
A transformer, comprising: a first continuous single piece multi-turn helical winding having at least a first terminal and a second terminal; and a second continuous single piece multi-turn helical winding having at least a first terminal and a second terminal, a portion of the second continuous single piece multi-turn helical winding between the first and the second terminals received concentrically within an inner diameter of the first continuous single piece multi-turn helical winding, the portion of the second continuous single piece multi-turn helical winding spaced sufficiently closely to the first continuous single piece multi-turn helical winding to permit inductive coupling therebetween in response to a current running through at least one of the first or the second continuous single piece multi-turn helical windings, wherein at least one of the first or the second continuous single piece multi-turn helical winding consists of an electrical conductor and an electrically insulative sheath that electrically insulates the electrical conductor between first and the second terminals thereof from the other one of the first or the second continuous single piece multi-turn helical windings, wherein the electrical conductor of the at least one of the first or the second continuous single piece multi-turn helical windings has a rectangular cross-section taken perpendicular to a longitudinal axis of the first or the second continuous single piece multi-turn helical windings at a point along the longitudinal axis; and wherein the first terminal of the second continuous winding overlaps the upper most outer turn of the first continuous winding and the second terminal of the second continuous winding overlaps the bottom most outer turn of the first continuous winding and wherein the first and the second terminals of the second continuous winding point in the same direction.