With the upper winding L2 and lower winding L1 having an equal number of turns and with the windings having the polarity indicated by the dots, {HEAD ~ a voltage} substantially equal to E will be produced between {TAIL ~ the center tap} CT and the lower end A of lower winding L1 
With the upper winding L2 and lower winding L1 having an equal number of turns and with the windings having the polarity indicated by the dots , { HEAD ~ a voltage } substantially equal to E will be produced between { TAIL ~ the center tap } CT and the lower end A of lower winding L1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH