This 9 W amplifier with transistors from the 60's was found in documentation of the time. The output transistors must be mounted on heat radiators and the power supply is included.
This is a slightly different configuration of full-wave power control than we found in an old...
This 1-transistor timer was published in Radio Electronics magazine in December 1960. The circuit has...
This type of circuit is widely used in old cassette recorders and tape players, regulating the...