A ratio generator is preferably provided as the logic element to develop {HEAD ~ a logic signal} that is {TAIL ~ a function} of the ratio of the partial currents 
A ratio generator is preferably provided as the logic element to develop { HEAD ~ a logic signal } that is { TAIL ~ a function } of the ratio of the partial currents
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH