This circuit was found in an American documentation from 1968. The circuit uses transistors from that time. The output currents are shown in the diagram.
This conventional window detector circuit was found in a 1995 documentation. The trigger points, that...
Found in a Radio Electronics store from the 90s, this circuit is for cars of that era. The circuit...
This old circuit excites lamps but can be modified to excite high-power LEDs or other loads...