This circuit that draws 1 out of 8 LEDs was found in an 80's American documentation. The circuit can also work with an astable using the 555 instead of the 4046 which is not a common component today.
Found in Popular Electronics from the 90s, this circuit can be used for high voltage applications and...
Suggested by American documentation from the 90s, this circuit has separate controls for the...
Found in a 90s Popular Electronics, this simple circuit turns on a light when the light stops to...