For the 1 MHz frequency, the pass band of this filter is only 120 Hz wide. The filter is suitable for telecom applications and its impedance is 600 ohms.
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...