Found in an Electronic Design from the 90's, this circuit measures the equivalent resistance in series of a resistor. The circuit operates at 50 kHz producing a rectangular signal.
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...