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