This multiple cable test sequential circuit was found in Radio Electronics. The connector must be according to the type of cable to be tested.
This simple PWM circuit was found in the March 1991 issue of Radio Electronics magazine. The...
This circuit generates trains of pulses in regular intervals determined by R1 and C1. The...
This configuration was obtained in a 1977 FET Databook. The circuit can be practically any JFET...