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