Low profile magnetic structure in which one winding acts as support for second winding

In combination:

• a circuit support chassis for supporting circuit components and including pin receptacle means,
• a transformer structure comprising:
• an E shaped core component defining first and second winding containing windows, each window having a length dimension substantially exceeding its width and height dimension, and being separated from each other by a center leg of the E shaped core;
• a first winding constructed of a conductive material and having a channel cross section, and positioned to encircle the center leg of the E shaped core and having a base of the channel cross section perpendicular to sidewalls of the center leg and two sides of the channel cross section being parallel to sidewalls of the center leg and having an open side facing upward in a same direction as an open side of the windows defined by the E shaped core component;
• a second winding placed within the channel cross section shape of the first winding;
• a conductive cover forming a part of the first winding and placed on top of the channel cross section to fully enclose the channel cross section and make the first and second windings substantially coaxial;
• an I shaped core component having a length along the first and second windows substantially longer than a width across the first and second windows and placed on ends of legs of the E shaped core component to complete a magnetic path therewith;
• a bottom surface of the E shaped core component further including detents at its corners and a top surface of the I shaped core component further including detents at its corners, and a plurality of clip devices each including first and second hook terminations to fit into the detents and connected thereto for securing the E shaped core component and the I shaped core component together, each clip further including pins which fit into the pin receptacle means to secure the transformer structure to the circuit support chassis.