A voltage is induced in {HEAD ~ the lower end} A of {TAIL ~ lower winding L1} of such transformer to produce a voltage VB substantially equal to 2E between ends A, B of the primary of transformer T; here, however, the voltage at end 
of
A voltage is induced in { HEAD ~ the lower end } A of { TAIL ~ lower winding L1 } of such transformer to produce a voltage VB substantially equal to 2E between ends A , B of the primary of transformer T ; here , however , the voltage at end
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH