This circuit is from Electronics Now magazine, February 1987. The number of channels is high depending only on the distances of the stations and the losses in the cables.
Sine signals are converted into square signals by this simple circuit. The maximum frequency is...
This triac circuit was taken from an article in the July 1970 Radio Electronics magazine. Note the...
This TTL circuit was found in an American documentation from the 80s. The components are common in the...