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