We found this circuit in a 1977 National Semiconductor Databook. The circuit can use other FETs like the BF245 and has an input impedance of 10 megohms. The circuit gain is unitary.
This circuit was found in Japanese documentation from the 1960s. It is a commercial circuit with...
This circuit with 5 V power was suggested by Motorola's Linear Databook of 1990. The circuit has...
This circuit was found in an English magazine from 1977. Signal inputs and outputs must be...