This circuit from a 90s Popular Electronics, decodes the old analog TV signal. It works with a pilot frequency of 15 734 kHz from the scanning system.
This two-transistor constant current source is from a 1968 documentation. Modern equivalent...
This converter or inverter uses components that are still common. The transformer is the type...
Using a V/F converter this circuit was found in the June 1991 issue of Radio Electronics magazine. The...