Found in an Electronics News from 1970, this circuit supplies a current of up to 1 A. The integrated circuit is from the era and must be mounted on a heat sink.
This circuit is used in transceivers, enabling input selection by diode switching through polarity...
This configuration was found in an American publication from the 90s. Operators admit equivalents just...
This circuit was found in an Italian magazine Elettronica Prática of 1977. The transistors can be...