Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
This is an interesting configuration obtained in an old circuit manual. The unijunction can be...
This circuit generates quadrature signals, that is, with a 90-degree phase difference. The circuit...
This circuit is from a 1967 publication. The configuration holds true for modern transistors having...