In his video [Afroman] describes how the LM317 can be used to regulate current rather than voltage to provide a constant current source under ... While this circuit may not be as efficient as ...

[YS] was inspired to come up with the circuit after reading Wednesday’s Re:load dummy load post. That was a constant current load ... was just to alter the design to achieve constant resistance.

Woodward has offered “PWM-programmed LM317 constant current source,” an intriguing ... resistors Rs and Rc could form the basis for such a circuit if it were driven from a suitable control current. In ...

Figure 1’s negative constant current source has been a textbook application for the LM337 regulator forever (or thereabouts). It precisely maintains a constant output current (Iout) by forcing the ...