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 traditional stable configuration with the TTL 7400 integrated circuit was obtained in a...
This good receiver contains 6 coils wrapped in ferrite rods. L1 has 20 turns of wire 28 and L2 /...
The integrated circuit used in this application is not currently common. However, it can be...