In the figure we have 3 oscillators with logic gates that can be triggered by external logic signals. The circuits were found in the Radio Electronics magazine of April 1987.
The coil of this receiver determines the range. It can have 2 to 10 turns of wire 20 to 24 in the...
This circuit was found in a 1967 Electronics World. The circuit uses components of the time that...
Found in a 1990s Electronics Now, this circuit uses a period-specific integrated circuit that...