We found this cable tester in a Popular Electronics from the 90s. The circuit uses a connector according to the cable to be tested. Adaptations can be made for different types of cables.
This configuration uses the 4 gates of a 7401 integrated circuit. The capacitors determine the...
We found this circuit in a documentation from the 70s. The original text was kept. The oscillator...
This circuit was found in the September 1974 issue of Radio Electronics magazine. It consists of a...