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