3Dmitchell Forum

Electrical => Electrical Design and Circuitry => Topic started by: mitchell on October 11, 2009, 08:04:45 AM



Title: The constant current LED driver circuit
Post by: mitchell on October 11, 2009, 08:04:45 AM
One of my favorite simple circuits.
(http://3dmitchell.com/images/circuits/constantcurrentLED.JPG)

Constant Current LED Driver
Bob Pease from National Semiconductor came up with this circuit.  It maintains a constant current through one or more LED's.  A single resistor controls the desired current.