This current boosting circuit uses an op-amp and 3 transistors. The current depends on Q1. The circuit is from the 1995 Encyclopedia of Electronic Circuits Volume 5.
Found in General Electric's 1966 documentation, this circuit uses company reference diodes, which are...
This circuit uses a wire potentiometer, but the current is much more intense in the control thanks...
In the figure we have another application for the LT3518 integrated circuit from Linear Technology...