Indicated for alarm applications, this circuit was found in the December 1976 issue of Radio Electronics magazine. The circuit is for 12 V car applications.
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...