This circuit was published in Radio Electronics magazine in June 1959. The circuit uses an inverter with transformer to generate the high voltage of the Geiger tube.
This circuit works with small 5 V incandescent lamps but can be modified to operate with LEDs. The...
This circuit found in Radio Electronics can be used in games to produce a random pulse train. The...
This photometer is based on a Wheatstone bridge that must be balanced by the linear potentiometer P1. The...