This is the typical circuit of a local oscillator for a superheterodyne FM receiver. The circuit was found in a 1980s documentation and is typical of early and early receivers.
This circuit was found in an English technical documentation from 1976. The supply can be done...
This bistable or flip-flop is triggered by a negative pulse applied to the collector of the...
This simple circuit was taken from an article in April 1984 Radio Electronics magazine. The...