We found this circuit in an old documentation. Its purpose is to turn on warning lights when the vehicle in a garage touches or passes a sensing bar preventing it from hitting the wall.
Using the CMOS 4001 we found this circuit in the October 1974 Radio Electronics magazine. The...
This circuit for testing sources up to 10 A was found in the magazine Radio Electronics Special...
This bridge-biased transistor test circuit measures gain in the range 0 to 300. Circuit is from...