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 simulation shows how can we test a capacitor using a function generator and oscilloscope. The...
This circuit controls the passage of the signal from an input to an output using a DC signal from a...
The LM12 is a high-power operational amplifier capable of providing a 4 A output current with a 40...