This simple component tester was found in the October 1997 issue of Electronics Now magazine. The circuit is powered by power grid through a simple power supply.
Found in documentation from the 1970s, this circuit uses an oscillator and a display to warn of...
This circuit indicates whether a cable or wire is energized by simply approaching its antenna. The...
Using bipolar, FETs and unijunction this long-lasting timer can reach 10 hours with good quality...