Based on Radio Shack 276-137, this circuit was found in the December 1995 issue of Electronics Now magazine. The circuit drives an LED but could use a relay instead.
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...
This circuit works like a solid-state contactor. We find it in General Electric documentation from...
CMOS integrated circuits are sensitive to supply voltages in terms of signal propagation time....