This configuration found in GE documentation from the 90s, can also be seen elsewhere in this section. It can operate with voltages from 1 to 6 V and consumes only 6 mW at 1.5 V.
This circuit published in the November 1964 Radio Electronics magazine powers a light bulb but can...
This circuit uses an old National Semiconductor operational amplifier, but it can be implemented with...
This circuit is from the 1990 Motorola Linear Databook. The circuit can be applied to other...