This circuit has its frequency controlled by a 1MHz crystal. The circuit must be powered by a voltage of 5V. The capacitors must be ceramic. The generated signal is rectangular.
Yes, tunnel diodes can also be used in voltage regulators, as shown in this circuit from a Radio...
Using a 555 this circuit was found in old documentation, but it is still valid. | Clique na imagem...
According to the author of this project, from a documentation on espionage from the 1980s, this...