How Do LEDs Work?

Wonder how those LED bulbs in your house or vehicle headlights generate such bright light? This video explains how.

Spencer Chin, Senior Editor

April 4, 2024

LEDs produce light through RGB diodes.
LEDs have RGB (red-green-blue) diodes that are regulated to produce light in various combinations. VirtualBrain

The light-emitting diode (LED) keeps making inroads into everyday electronics. From displays to bulbs to headlamps and other lamps in newer vehicles, this device is producing brighter, more attractive light for many applications. You might wonder how LEDs work.

A video on the YouTube channel VirtualBrain explains how LEDs work. The video uses an electrical circuit with a diode to explain the action of current passing through to allow light passage and thus the LED lighting. As an LED is semiconductor-based, the video further explains how electron movement and the transfer of energy produce light emission. Finally, it explains how RGB (red-green-blue) diodes work to generate light in various color combinations.

You can view the video here.

About the Author(s)

Spencer Chin

Senior Editor, Design News

Spencer Chin is a Senior Editor for Design News, covering the electronics beat, which includes semiconductors, components, power, embedded systems, artificial intelligence, augmented and virtual reality, and other related subjects. He is always open to ideas for coverage. Spencer has spent many years covering electronics for brands including Electronic Products, Electronic Buyers News, EE Times, Power Electronics, and electronics360. You can reach him at [email protected] or follow him at @spencerchin.

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