First half primary Np1 winding:
start on pin 3 and end on pin 2. Spread evenly over the bobbin. Cover with one
layer of tape.
Wind Ns1 with 6 turns, 5 strands
in parallel starting on pin 11 and ending on pin 9. Apply spacers according to
safety requirements or use triple insulated wires (TIW).
Wind Ns2 with 6 turns, 5 strands
in parallel starting on pin 10 and ending on pin 8. Apply spacers according to
safety requirements or use triple insulated wires (TIW). Cover with two layers
of tape in case of ECW wire, with one layer only in case of TIW.
Second half primary Np2 winding:
start on pin 2 and end on pin 1. Spread evenly over the bobbin. Cover with one
layer of tape.