The circuit presented is based on the National Semiconductor's LM3524, a component not common today. The circuit is from the 1994 Linear Applications Handbook.
This car anti-theft circuit is from a Radio Electronics magazine from May 1986. The circuit...
This circuit, well known, since it is already present in other points of this website, is from an...
We found this source with the CI 723, common at the time, in a 1989 paper. Power transistors must be...