This circuit was found in a 1969 US documentation. It provides a signal that can be externally programmed as suggested circuits. The circuit can be used as a shield.
This system of sequential lights for shop windows, discotheques, stores, does not use integrated...
This circuit was found in an Elektor from the 90s. Next to the circuit we have a table with the...
This sensor was published in Radio Electronics magazine in April 1962. The two-transistor circuit...