This circuit for cars with mechanical ignition systems was found in the Electronics Experimenter handbook from 1991. It inhibits the ignition system, preventing theft.
This high current control circuit was found in a publication from the 1990s. The power transistor must...
This circuit monitors the voltage of a 110 V network using a small 3 W incandescent lamp and an...
We found this circuit in a 1986 documentation. It causes 40 LEDs to flash sequentially. The big...