Barrel-wound conductive film transformer

In a transformer, the improvement wherein the windings comprise:

• a dielectric membrane having first and second major surfaces;
• an elongated, continuous primary winding conductive film disposed on one of the major surfaces of said dielectric membrane, said primary conductive film having first and second terminal poritons extending at an angle therefrom at respective ends thereof;
• a secondary winding conductive film on one of the major surfaces of said dielectric membrane, said secondary conductive film being situated adjacent to and insulated from said primary conductive film, said primary and secondary conductive films being disposed on opposite sides of a longitudinal axis, said secondary conductive film having first and second terminal portions extending at an angle therefrom;
• said dielectric membrane being folded along at least one fold line parallel to said longitudinal axis so that said primary and secondary conductive films overlie each other;
• and
• said dielectric membrane and said conductive films being wound about a central axis perpendicular to said longitudinal axis in the form of a spiral, such that said primary and secondary windings are situated in the same spiral plane, to provide a multi-turn, barrel-wound transformer winding structure having said primary and secondary terminal portions extending outwardly therefrom.