Constant current LED driver

Technology
Constant current LED driver
constant_current_LED_driver.jpg

Keith has a nice write-up explaining the design of his constant current LED driver circuit. When lighting a large number of LEDs, this design is preferable to just using a current-limiting resistor because it supplies the same amount of current regardless of how many or few lights are connected to it, helping to protect against shorts or other failures that might occur.

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