This circuit was found in a 1960s Motorola documentation. Transistors are types of the time and can be replaced by modern equivalents.
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...