Recommended · for beginners

Constant current power supply and laser / LED driver tutorial

Name: Constant current power supply and laser / LED driver tutorial
Channel: Afrotechmods
Description: Shows a simple LM317 constant current circuit, offered as a cheap way to drive LEDs, though its fitness for laser diodes gets questioned.

Afrotechmods

Why people recommend it

Shows a simple LM317 constant current circuit, offered as a cheap way to drive LEDs, though its fitness for laser diodes gets questioned.

Watch for: Laser diodes may need more protection than this gives

If you liked this

Review: 1W 350mA LED Driver with the elusive 6200 Chip

Julian Ilett 4 people · 10 months · since Feb 2016
How to Drive LEDs - Easy Constant Current Circuit

Kevin Darrah 3 people · 3 months · since Mar 2016
LM317 Adjustable Voltage Regulator Tutorial

Afrotechmods 9 people · 9 months · since Jan 2012
EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing

EEVblog 13 people · 16 months · since Dec 2011
#190: Back to Basics: Transistor Current Sources and Mirrors

w2aew 7 people · 9 months · since Oct 2015
Laser diode self-mixing: Range-finding and sub-micron vibration measurement

Applied Science 6 people · 9 months · since Aug 2019

Why people recommend it

If you liked this

Review: 1W 350mA LED Driver with the elusive 6200 Chip

How to Drive LEDs - Easy Constant Current Circuit

LM317 Adjustable Voltage Regulator Tutorial

EEVblog #102 - DIY Constant Current Dummy Load for Power Supply and Battery Testing

#190: Back to Basics: Transistor Current Sources and Mirrors

Laser diode self-mixing: Range-finding and sub-micron vibration measurement