This game with digital logic circuits was found in the December 1976 issue of Radio Electronics magazine. The circuit includes the power supply driving a set of LEDs.
This circuit was obtained from a Hands On-Electronics, an American magazine from January 1987. This...
Using the CA3140 in the figure we have a comparator that goes low in the window voltage space. The...
This circuit is from a Popular Electronics from the 90's. The circuit activates a buzzer with...