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.
Found in a 1967 EEE, this circuit oscillates at 20 MHz according to the values of the given...
This circuit is from a 1980s Motorola documentation. The circuit can be made with modern...
This circuit is from Radio Electronics from April 1987. The circuit is powered with voltages that...