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.
The original version of this circuit was obtained in a 1995 magazine Electronics Now. The magazine no...
This circuit amplifies signals from low impedance sources as microphones, transducers, etc. For...
We found this configuration in an American 80's documentation. The circuit can be implemented with an...