This circuit was found in a 1965 General Electric documentation. It is intended for reception of the aviation strip, but inside an aircraft or nearby (which is now prohibited).
This source only uses passive components (without transistors or integrated circuits) and even so it...
Two National Semiconductor operatives are used on this circuit indicated for instrumentation...
This circuit can measure voltages from 0 to 10 V with a very high input resistance. The circuit is...