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 is one of the many hysteresis comparator circuits the reader may find in this section and on this...
The circuit shown in the figure generates a square signal (50% active cycle) when the pressure switch...
The purpose of this circuit is to measure the intensity of audio signals. We found it in the...