Found in a 1967 American electronics magazine, this circuit has an input impedance of 2000 ohms. The circuit can be built with modern equivalent transistors.
The gain for this circuit is given by the ratio between R2 and R1. The circuit is suggested by...
The circuit suggested in a 2009 documentation serves as support for the technician who works in...
a We find this circuit which has a traditional configuration in a 1988 publication. The circuit is...