This immobilizer circuit for the car was found in the Radio Electronics magazine of December 1976. It has several sensors blocking the ignition system.
This receiver is from an old English magazine from 1965. The transistors used are germanium, no...
Found in a 1980s documentation, this circuit makes use of components from that time. Modern...
This version is a variation of the previous circuit, inverting the position of the transistors to have the...