This source was originally suggested by Delco in a 1969 documentation to power amplifiers up to 50 W. The transistors are of the time admitting modern equivalents.
We found this circuit in an old American documentation. The circuit is suitable for motorcycles and...
This circuit was found in a 1977 Radio Handbook. Transistors admit equivalents. The lamp is an old...
This circuit was found in an old publication about transistors. The circuit can be used to drive...