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