{HEAD ~ A circuit} for supplying selected currents to a charge pump without harmful effects arising from operation of current switches in {TAIL ~ the charge pump} 
{ HEAD ~ A circuit } for supplying selected currents to a charge pump without harmful effects arising from operation of current switches in { TAIL ~ the charge pump }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL