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