I'm designing a power supply with 3 outputs and an input of 100VAC to 484VAC. The 3 outputs are 12VDC@1A, 5VDC@1A,and 12VDC@1A. I been able to design it using PIX's Designer. Which does not reference a schematic. But my question is the transformer secondary design it generated. It starts with 6 turns to a tap for 5V then 7 turns to a tap for the first 12V and then 1 turn to end for the second 12V. I understand the first taps but it the 1 turn tap that thoughs me off. I was expecting another winding of 13 turns for the second 12V output not a 1 turn winding at the top of the first 12V winding.
I have attached a copy of the design.