This amplifier in common mode was obtained in an Electronic Design from the 90's. The circuit is valid for any operational, remembering that the power supply must be symmetrical.
We found this circuit in a 1980 documentation. With basic changes, including transistors that were...
This two-tone decoder has a bandwidth of 24%. The circuit is from a 1994 Electronics Now. The...
This source was found in a 1982 American publication, but can be easily assembled using 2N2995 (PNP...