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LED Light Bulbs – The Newest Technology in Illuminating Spaces

 LED  lamps are nothing but a cluster of individual  LED   light   bulbs . These  bulbs  operate on the principle of a pin junction where the energy flows in one direction from p to n side when a voltage is applied it. The p and n sides of the junction are made of different semiconductor material. Just by varying the semiconductor material, the color of the emitted  light  can be changed.

A few years back  LED   light   bulbs  had limited usage. They were used only in digital devices and traffic  lights , but now they are being used widely in residential and commercial  lighting . Some  LEDs  produce  light  of wavelengths between 400 nm and 700 nm while infrared  LEDs  produce  light  of the wavelength greater than 830 nm. With the introduction of diodes that produce white  light , the applications of these  bulbs  have become widespread.

Many people are switching to  LED  lamps because of their manifold benefits. They are energy efficient, environment friendly, and have good life span. Also, they are sturdy and do not get easily damaged due to shocks. An  LED  lamp consumes one-tenth of energy consumed by an incandescent  bulb  and has an average life span of 10 years. The luminous efficiency of  LED   light  lamps varies from 20 lumens per Watt to 55 lumens per Watt. Though the Compact Fluorescent  bulbs  also have good luminous efficiency, but many people do not prefer them as they contain harmful mercury. Mercury poses problems both to the environment as well as to the health of the occupants.

However, there are no such problems with  LED  lamps. They are entirely free from harmful materials. Moreover, they need to be replaced only once in a decade, hence the waste generated by them is very less. Therefore, they are environment friendly.  LED   light   bulbs  are of many different types. If you need a focussed  light  in one direction, then  LED  floodlights and  LED  downlights are useful.  LED  globes are useful if you need diffused  light  that illuminates the entire area uniformly. One can also buy  LED  tube  lights , dimmers, and garden  lights  for their homes or offices.

How to Buy a  Light  Emitting Diode  Bulb ?

Since  LED   light   bulbs  are relatively expensive than Compact Fluorescent  Bulbs  and last for almost a decade, one should choose them carefully.

Determine Your Needs – This includes wattage of the  bulb , type of illumination required, and place for which it is required. You can get anything from 3v to 18v  LED   bulbs . A 3v  LED   bulb  is as good as 25W incandescent  bulb , a 12v  LED   bulb  serves the purpose of a 50W incandescent  bulb , and a 18v  LED   bulb  can be used at places where 100W incandescent  bulb  is required.

The illumination of these  bulbs  varies depending upon their manufacturer and construction. While some 12v  LED   light   bulbs  are equivalent of 40W incandescent  bulb , some serve the purpose of 60W incandescent  bulbs . Therefore, one should check the entire specifications of the  bulb  before buying the  LED  lamps.

Luminous efficiency is one thing that can change the performance of the  bulb . Though most manufacturers offer  bulbs  of 20 lumens per Watt efficiency but buying the one having efficiency between 40 lumens per Watt to 55 lumens per Watt is better.

You should determine the color of  light  you want. It depends on your personal taste and the area that has to be illuminated. Color is often represented by temperature in Kelvin. A low temperature of 2100 K indicates warm colors like yellow while high temperature of 5100 K indicates cold colors like blue. Most people prefer warm colors for indoor and cold colors for outdoors.

Beam angle is another factor that should be considered while buying an  LED   light   bulb . If you want to focus  light  on a small area then a  LED   bulb  with narrow beam angle of 15 to 30 degrees is good. If you want to lighten up a wide area with subtle  lighting , then choose an  LED   bulb  with a wide beam angle of greater than 45 degrees as it spreads the  light  over a large area. Buying  LED   light   bulbs  is not difficult. Several online stores sell these  lights . Before buying, spend some time researching on the types of  LED  lamps available. Also compare their rates. Most sellers offer warranty on these  bulbs  and you should check it before striking the final deal. You should buy the one having at least one-year warranty.

Source by Scott Giordano

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