With reference to FIG 14, a digital error {HEAD ~ amplifier} 240 for {TAIL ~ constant voltage control} is shown 
for
With reference to FIG 14 , a digital error { HEAD ~ amplifier } 240 for { TAIL ~ constant voltage control } is shown
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH