As illustrated in FIG 22, {HEAD ~ a DC voltage} is between the source 2208 and {TAIL ~ drain} 2210 
is between
As illustrated in FIG 22 , { HEAD ~ a DC voltage } is between the source 2208 and { TAIL ~ drain } 2210
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH