This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an amplifier stage. The circuit has a 500 mV output.
Found in a 1969 Electronics World, this circuit generates low frequency signals with two...
This circuit was obtained from a Popular Electronics of the 1990s. The circuit uses a temperature...
This stage was used in old audio ampliiers and radios from the 1950s and 1960s. It uses one of the...