![led - need advice with LM317T current limiting circuit ,new alternative - Electrical Engineering Stack Exchange led - need advice with LM317T current limiting circuit ,new alternative - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Hy95S.jpg)
led - need advice with LM317T current limiting circuit ,new alternative - Electrical Engineering Stack Exchange
![ASK: what do you think of this LED current limiting circuit ? When R2 current/voltage rises high enough, Q2 turns on and Q1 turns off, then R2 current/voltage drops and Q1 turns ASK: what do you think of this LED current limiting circuit ? When R2 current/voltage rises high enough, Q2 turns on and Q1 turns off, then R2 current/voltage drops and Q1 turns](https://external-preview.redd.it/BhK8SBH2OepytGXOZs6GtkS-1WFkgzeXGfmfhUhGKAo.png?auto=webp&s=e3809c98d76c8bea6ca4c28815f1b5aa8056ea79)
ASK: what do you think of this LED current limiting circuit ? When R2 current/voltage rises high enough, Q2 turns on and Q1 turns off, then R2 current/voltage drops and Q1 turns
![The Right Choice of Current-Limiting Resistors for Constant Voltage LED Drivers — LED professional - LED Lighting Technology, Application Magazine The Right Choice of Current-Limiting Resistors for Constant Voltage LED Drivers — LED professional - LED Lighting Technology, Application Magazine](https://www.led-professional.com/resources-1/white-papers/the-right-choice-of-current-limiting-resistors-for-constant-voltage-led-drivers/@@images/0d2e6b67-1eab-4f2d-8982-d4f9d9f823e1.jpeg)