This Motorola circuit uses only one transistor. The circuit is from 1965 documentation. The transistor must have a collector current rated at least to 12 A.
This circuit was obtained in an American documentation translated in the 80's. The circuit can be...
This circuit is from a 1998 Electronics Now and can be easily assembled since it uses a common...
This circuit was suggested by National Semiconductor in its Linear Application Handbook. The...