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 LED signaling circuit uses a programmable unijunction transistor (PUT) as a relaxation...
This decoder filter was found in a 1975 documentation. The integrated circuits can be 741. The...
We found this circuit in the January 1997 Electronics Now magazine. The triac determines the...