This car anti-theft circuit is from a Radio Electronics magazine from May 1986. The circuit inhibits the ignition system of cars with mechanical switching systems.
We found this circuit in an old documentation. The instrument can be an ordinary multimeter in the...
This simple electroscope with bipolar transistors is not the most sensitive, but can detect static...
This circuit was found in an old Popular Electronics. It causes an LED to pulse and, at the same...