This circuit from Delta Products was published in the May 1974 Radio Electronics magazine. The circuit consists of a capacitive discharge ignition for 12 V vehicles.
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....