Suggested by Maxim in documentation from the 90s, this circuit has its response curve given next to the diagram as well as the formulas for the component calculations.
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...