This high quality circuit with complementary symmetry was found in an Electronics World of 1966. It can be made with modern transistors like the BD or TIP series.
Other operational amplifiers of the same the series, such as the MC34072, MC34074, MC35071,...
This circuit was obtained from a Popular Electronics of the 90's. Any power MOSFET can be used as...
This small transmitter, found in a 1982 publication, sends its signals to an FM receiver placed...