This amplifier is from the Philips Databook of 1990. The circuit is suitable for automotive use and has the characteristics given in the table below the diagram.
This oscillator from a 1970 documentation uses an operational amplifier that is no longer common on...
The integrated circuit used in this 90's circuit is not common today, but the configuration can be...
Found in a 70s RCA manual, this circuit uses a transistor of the time for an UHF L band...