This flip-flop circuit is from a September 1985 issue of Radio Electronics magazine. It generates random binary numbers.
This circuit was found in an English documentation from 1989. The transistors support...
This relay driver or relay shield for relays up to 100 mA can operate with voltages from 9 to 12 V...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...