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Controlling LEDs

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Controlling LEDs

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  • Author: Ethan Biery, Thomas Shearer, Roland Ledyard, Dan Perkins, Manny Feris
LED drivers are low-voltage devices that convert the line-voltage 120/220/277 V power to the low voltage needed for the LEDs, and may also interpret control signals to dim the LEDs. LED drivers come in either constant current or constant voltage. These two types of drivers are NOT interchangeable, and it is the design of the LED load that determines which driver is appropriate. Both LED lamps and LED fixtures require LED drivers. An LED is an electronic device (chip) that produces light when an electrical current is passed through it. There are two distinct type of LEDs: the LED lamp (also called a LEDi or retrofit lamp) and the LED fixture.

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