{TAIL ~ The capacitor voltage} is applied to the source of the first FET, the source of the second FET, and {HEAD ~ the bottom} of the reference precision resistor acting as a virtual ground 
{ TAIL ~ The capacitor voltage } is applied to the source of the first FET , the source of the second FET , and { HEAD ~ the bottom } of the reference precision resistor acting as a virtual ground
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH