The Light Emitting Diode commonly known as LEDs or LED lights have several benefits over regular
halogen bulbs and is now very popular in the automotive industry.
Some of the benefits of using LEDs are as follows:
- LEDs require less energy to produce the same amount of light than halogen bulbs.
- The very small size of a single diode allows the light to be used in very small applications or
several or many diodes can be grouped together for larger applications or to create a unique shape.
- Light emitting diodes produce significantly less heat than halogen bulbs.
- LEDs does not require any time to heat up and the lights are up to full brightness or can be completely
off immediately after being switched on or off.
- It is relatively easy to have the same diode or diodes emit different colour lights at different
occasions.
- LEDs have a longer lifespan than halogen bulbs, in fact light emitting diodes have over 30,000 hours
of useful life compared with less than 5,000 hours with regular bulbs.
- When the diodes has served their lifetime they usually start dimming and continue dimming until they
are completely lifeless as opposed to the abrupt failure.
The diodes are semiconductors and they are used to produce light. The semiconductors have impurities added
to them. The diodes are usually poor conductors of electricity but their level of conducting electricity can vary from
poor to high.
As electricity passes through the diodes the effect that it has on the semiconductors with the impurities
causes the diode to produce light.
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This Audi A8 has headlamps with the full LED (light emitting diode) option.
Light emitting diodes extends its advantages by the number of areas where it can and has been easily
used. xenons or high intensity discharge lights also have several benefits
over halogen lights but they are mostly used for headlights.
Light emitting diodes are used in almost any application of light in vehicles. They are used for
headlamps (low and high beams including adaptive headlamps), fog lights, indicator turn signals, the tail lamps (including brake lights)
some interior and ambient lights.
Not all vehicles that use light emitting diodes will use the LEDs for all of the applications as explained
above. Some vehicles use LEDs for the exterior lights alone and many headlamps use LEDs together with xenon bulbs
and/or halogen lights.
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