This circuit was found in General Electric documentation from 1966. The circuit is suitable for any triac. It can also operate with other mains voltages.
With the change of the coil, the circuit can operate at frequencies between 30 MHz and 150 MHz....
The frequency of this Pierce oscillator, found in 1969 documentation, depends on the crystal. The...
This simple circuit can be used to power a simple communication system using ordinary telephones....