More particularly, {TAIL ~ the invention} pertains to supplemental power supplies which can inject electrical energy into {HEAD ~ a pair} of conductors during selected time intervals 
More particularly , { TAIL ~ the invention } pertains to supplemental power supplies which can inject electrical energy into { HEAD ~ a pair } of conductors during selected time intervals
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH