We found this test circuit in the November 1999 issue of Electronics Now magazine. The circuit is to be connected in series with a load rated for the diac current.
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...