Light Emitting Diode: LED

Category: Others/ Misc

Presentation Description

Led lights are very useful and power saver lights, which reduce your electricity bills. Go through this ppt and read about led lights and how it works.


Presentation Transcript

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Light Emitting Diode: LED

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What is an LED LED stands for Light Emitting Diode a semiconductor device that converts electricity into light.

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LED: How It Works

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If current flows through a diode negative electrons pass one way and positive holes move the other way.

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The holes exist at a lower energy level than the free electrons therefore when a free electron falls it wastes energy.

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This energy is emitted in a form of a photon which causes light.

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