Indicated for calibrating digital instruments and circuits, this circuit was found in the June 1982 issue of Radio Electronics magazine. The circuit is based on components that are still available.
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...