This circuit was found in the June 1986 issue of Radio Electronics magazine. It is based on two operational CA3140s and has a trigger voltage adjustment.
For those who like experimental circuits, here is a sequential flasher system with LEDs, which can be...
This circuit can be used in broilers, greenhouses, drying chambers to regulate the temperature in a simple...
This circuit consists of an electrostatic sensor that can check if a cable is energized by simply...