We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the time and the diodes in the dotted board must be mounted on the output transistor heatsinks.
This circuit is from the National Semiconductor Audio Handbook. The amplifier operates with 6 V...
This configuration, explored several times on this website, shows how to use a 3-terminal voltage...
This signal generator found in Japanese documentation of 1973 uses an unusual integrated circuit...