This amplifier is from Motorola documentation from the 70s. The circuit uses transistors from the time, which are not common today, such as the SE7005 or 2N3916 at the output.
The integrated circuit used is not common today. The circuit is from the SGS linear integrated circuits...
This circuit was obtained in a 1998 documentation. It is a small low frequency signal generator with...
This circuit turns off after a time that depends on C1. The circuit is from an Electronics Now...