This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time, but a modern transistor of equivalent power can be used.
This circuit was obtained from an English publication from the 70's. The circuit is still current for...
This circuit makes use of an unusual Analog Devices component today. The circuit is from a 90's...
This circuit was found in a 1974 documentation. The bipolar transistor can be the BC548 and at the...