A second secondary winding of the transformer is connected between the other end of the first secondary winding of the transformer and {HEAD ~ the junction} of the d.c. power source and {TAIL ~ the primary winding} of the transformer 
of
A second secondary winding of the transformer is connected between the other end of the first secondary winding of the transformer and { HEAD ~ the junction } of the d.c . power source and { TAIL ~ the primary winding } of the transformer
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 REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH