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 circuit allows you to modify the resolution of a measurement bridge. It was found in the...
The four gates of a 40111 IC are used in thes two-out circuit. The output chages their state in a...
This circuit measures the strength of audio signals. We found it in an American publication from...