This function group is active only when calculating the DC-DC Converter transformer. As a result, the types of primary and secondary windings are determined. There can be two options: single and midpoint.

This will be useful later in determining the number of windings coiled together and the total winding of the transformer when you click APPLY. If the winding is midpoint, the number of windings coiled together is 1, with the midpoint being 2.

The presence of an additional winding for the recovery of the ferrite core is also determined. If Yes, then after pressing the APPLY button in the primary winding (winding 1 is always primary), the value of the additional winding will be 1 (1 wire), if not, 0 wires. All these data you can easily change as the sequence of winding primary and secondary manually.