EDN

SCR topology transmogrifies into BJT two-wire precision current source

An SCR topology transmogrifies into BJT two-wire precision current source with a self-resetting fault-current limiter.
Hackaday

Biasing Transistors With Current Sources

Over on his YouTube channel [Aaron Danner] explains biasing transistors with current sources in the 29th video of his Transistors Series. In this video, he shows how to replace a bias resistor (and ...
EDN

Two-wire precision current source with wide current range

An interesting analog design problem is the precision current source. Many good designs are available, but most are the three-wire types that can be used as a positive (see Figure 1) or a negative ...