Using a pair of period A/D converters, this 3-digit circuit was found in the 1992 Radio Electronics Experimenter magazine. The sensor is a thermistor.
This circuit is from a Japanese magazine of 1973. The circuit is designed to withdraw the power...
This is an interesting sound effects circuit that uses only discrete components. Components are common...
This circuit causes a green LED to light up when we step on the brakes and the rear lamps to light...