LED bulb

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LED bulb

A light source that is created by a light emitting diode (LED). For decades, LEDs have been used as indicator lights on myriad products; however, starting in the 2000s, they began to replace incandescent, halogen and fluorescent bulbs. LEDs draw considerably less power and are up to 80% more efficient. Although claims are made for some bulbs lasting 25 years, one should expect a long lifespan under normal usage.

In Their Infancy
As of 2016, LED bulbs are still more expensive than incandescent bulbs; however, prices are constantly decreasing. Companies continue to experiment with numerous designs. For example, when red, green and blue LEDs are combined, they produce white light. Another method uses a blue LED and yellow or red phosphors.

New Lights - A Different Power Source
As incandescent bulbs are replaced with LED bulbs using the same Edison screw mount, the LED bulb must include AC to DC conversion. However, if the bulb's power source is DC such as from powered Ethernet, they are more efficient (see PoE and Edison base). See incandescent bulb, halogen bulb, fluorescent bulb, Acandescent bulb, OLED lighting and LED.

Incandescent Vs. LED
The LED bulb on the right draws 3.5 watts but delivers the same brightness as the 45-watt bulb on the left. This LED bulb casts a very white light; however, LED bulbs run the gamut from warm yellow to white-blue (see color temperature).

They Sure Are Weird Looking
This Philips LED bulb hardly resembles incandescent lighting, which has been used for more than a century.

LED Night Light - 23 Times Less Power
Instead of the 7 watt incandescent bulb in the typical night light, this LED uses 0.3 watts. The blue arrow points to the single LED; the red arrow shows the light sensor.
References in periodicals archive ?
To claim your unique Mimoodz LED bulbs visit https://www.
LED options are improving rapidly, but many existing LED bulbs still have limitations that are unacceptable for the hospitality market.
LED bulbs are a case of government getting it exactly right: writing a law and regulations that didn't favor specific companies or technologies but set standards for performance that the private sector had to meet, with a bit of federal money thrown in to accelerate the process.
TM) Designed to offer consumers a no-compromise lighting experience at a compelling price, the Cree(R) LED bulbs shine as brightly as comparable incandescents while saving 84 percent of the energy compared to traditional bulbs.
GE's existing portfolio of LED bulbs includes a 13-watt LED (60-watt incandescent replacement) and a 9-watt LED (40-watt incandescent replacement), which was the first incandescent-shaped (A-19) LED in the world to earn Energy Star qualification.
LED bulbs are quickly finding their way into homes thanks to their high energy efficiency and long life.
LED bulbs use 1/50 of the electricity of traditional holiday lights, and they can last up to 30 years.
6 W (LDA8L-A1/D and LDA8D-A1/D) standardtype (E26 base) LED bulbs and 5.
For example, assuming one is paying the national average of 12 cents per kilowatt hour, a 10 watt LED bulb will cost about $30 to run over the course of 23 years at three hours per day and will not need to be replaced during that time.
In essence, a household can purchase a LED bulb at an overall cost of 120 as against the retail price of ` 350- 600 along with a three- year free replacement warranty.