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 circuit presented was found in a European publication of the 1980s. Used transistors are not...
The circuit shown in the figure is intended for medical applications where the sector in contact...
This circuit can be used in decoration or to draw attention, in a “fake” assembly for example. What he...