This circuit was found in a 90’s Electronic Engineering. The signal is sinusoidal with the frequency given by the non-value components that form the resonant network.
This configuration was obtained in the SGS manual of linear integrated circuits of 1982. The...
This circuit works with only 1.5 V and can be powered by a solar panel. The circuit is from 1991....
This circuit was obtained in a 90s Popular Electronics. It is used for tuning on AM radios. The...