{HEAD ~ The circuit} 22, wherein {TAIL ~ each} of the first, second, and third switch means includes a field effect transistor 
wherein
{ HEAD ~ The circuit } 22 , wherein { TAIL ~ each } of the first , second , and third switch means includes a field effect transistor
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH