This circuit was found in American documentation from 1966, but it can be assembled with a modern equivalent transistor. The circuit is based on a mechanical tuning fork with a coil feedback system.
This circuit, which can be used as a shield, was found in a 1980s documentation. The circuit can be...
Found in an English documentation from the 90's, this oscillator has the frequency given by the LC...
This circuit was found in a 1970 IEEE publication. The circuit functions as a voltage controlled...