While LED lighting has been used for years as power indicator lights in consumer electronics, for bike lights, in cars, in traffic lights and for outdoor lighting, recent technological advances mean LED light bulbs are entering our homes as a replacement for incandescent and fluorescent light bulbs.
Why is LED lighting growing in popularity? What are the benefits of LED light bulbs? And what's actually inside an LED bulb? We have taken a look at this potentially exciting technology to give you the answers to these kind of questions, and more.
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What is an LED?
An LED is a "Light Emitting Diode," a type of semiconductor that can fit into an electronic circuit and carry an electrical current in one direction.
How do LED light bulbs work?
LEDs are made up of two types of material -- N-type material and P-type material. The N-type material is engineered to contain extra electrons with extra charge. The P-type material has extra "holes" it wants filled with the charged electrons.
When the current is activated the electrons move from the negatively charged area to a positively charged area. This generates energy which is released as a "photons" units of light.
What is the benefit of LED lighting?
While they currently cost more than ordinary bulbs, LED light bulbs can last 25 times longer than traditional bulbs.
In addition, LED is a much brighter light. LED bulbs can offer better intensity than traditional bulbs, and can be programmed to produce millions of colors as well as different hues of white light.