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.
The circuit shown is from an old European publication. In it we have the way to activate a relay...
We found this circuit in a European publication from the 1990s. Transistors are still common types...
This circuit was found in an American documentation and can be added to common amplifiers of any...