This circuit is from a 1980s Signetics documentation. The circuit separates the modulation signal from a carrier. The used components are not common today.
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...