We found this circuit for immobilizing a car's ignition system in the December 1976 Radio Electronics magazine. The circuit uses the courtesy light activation switches.
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...