The circuit is of the Motorola Linear Databook of 1990. The power source must be symmetrical and the characteristics of the circuit are given next to the diagram.
This audio oscillator circuit was found in a 1992 publication. In the original article it is...
This low displacement circuit was found in American documentation from the 90s. Operational...
This crystal oscillator uses a common transistor and its frequency depends on the crystal used. We...