Magnetic component with bobbinless winding

1. A transformer apparatus comprising:

a base;

a bobbinless winding assembly disposed on the base, the assembly comprising:

a primary winding including an electrically conductive wire having a plurality of substantially co-planar radially-spiraling turns of the wire;

a secondary winding aligned co-axially with the primary winding, the secondary winding including a substantially planar disk having a radial gap defined therein, the primary and secondary windings having a center axis defining an interior void along the center axis;

a core positioned in the interior void, the base positioned on the exterior of winding assembly;

a toroidal current-sense transformer positioned on the base, the current-sense transformer defining a center hole therein; and

the primary winding including a free end passing through the center hole.

2. The apparatus of claim 1 , further comprising:

a first terminal pin protruding from the base;

a second terminal pin protruding from the base;

wherein each terminal pin is electrically connected to the primary winding.

3. The apparatus of claim 1 , wherein:

the primary winding further comprises first and second primary windings co-axially aligned and electrically connected in series; and

wherein the first and second primary windings are separated by a primary winding gap.

4. The apparatus of claim 3 , wherein the annular disk of the secondary winding is positioned in the primary winding gap aligned co-axially with the first and second primary windings.