This immobilizer circuit for the car was found in the Radio Electronics magazine of December 1976. It has several sensors blocking the ignition system.
The circuit in the figure is suggested by Microchip (www.microchip.com), being built around the...
This excellent amplifier, found in a 1986 documentation, provides good power and is powered by a...
This circuit was found in an old Electronics Now. The transistors are general- purpose and the...