We found this circuit in a 1957 Raytheon transistor publication. The circuit can be assembled with more modern transistors with minor changes. The handset must be high impedance magnetic.
This simple rhythmic light circuit uses a 110 V to 220 V transformer and can hold a good number of...
This circuit was found in a 1980s Intersil documentation. The integrated circuit used is not...
This circuit was found in a 90’s Electronic Engineering. The integrated circuits are of the time...