This very simple amplifier was found in the Philips Databook of 1990. The circuit is suitable for headphones and other battery powered applications.
Found in a 1968 Mullard manual, this circuit can function as an infrared audio link. The...
This circuit was obtained from an American 80's documentation. The balanced mixer can be shown in...
This circuit was found in a 1980s document. The integrated circuit is from the time and the power...