Σάββατο 7 Μαΐου 2011

How to Buy Dimmable LED Bulbs

Light-Emitting Diode (LED) bulbs are a relatively new technology in the lighting industry. They are considered a green technology, and require much less energy than traditional types of bulbs. One of the main criticisms of these bulbs to this point has been their poor compatibility with dimmer switches. While virtually any LED bulb can be used in most dimmable fixtures, the basic technology behind these bulbs leads to poor control over light levels. Fortunately, the newest LED bulbs are completely dimmable, and offer much more versatility than older models.

Instructions

Understand the limitations of LED bulbs. The traditional LED light bulb is not designed for dimming. When placed in a dimmable fixture, the bulb will have some dimming capabilities, which will generally perform best in the upper and lower 10 percent of light levels. If you want to enjoy the benefits of an LED, and only require a limited dimming range (for example, the light is either at full or near full brightness, or it is at minimum brightness, with no options in between), then any LED bulb will work.

Choose the correct LED bulb base type. For example, the traditional incandescent light bulb used in most home applications has a standard size base known as a "Type A base." Bulbs used in ceiling fans, lamps, or flood lights may have bases of many different sizes and shapes. When making your purchase, be sure to specify the appropriate base design. For more information on this topic, review the Lumi Select website found in the Resources section.

Compare brightness levels carefully. Many homeowners are accustomed to buying bulbs based on wattages. Because of the difference in light output between LEDs and other types of bulbs, LED bulbs should be purchased based on their light output, measured in lumens. This is an important consideration when purchasing these bulbs, as a 3 watt LED bulb can produce the same light levels as a 35 watt incandescent.

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