Pay More Attention To Choosing Lamps

Published:2011/3/7 1:39:00 Author:LiuQiaoyan From:SeekIC

LED lamp refers to light that uses light-emitting diodes as the source of light, which are applied to areas where colored light is demanded, and they come in various colors that released without filtering. Let’s discuss the advantages and disadvantages about this kind of lamp.

Advantages include small in size, low power consumption, long lifespan, environment-friendly, firm and durable. Firstly, being small in size makes the distribution of illumination flexible. Secondly, LED lamps are featured in low energy use because the sources of light are compact, which provides with small reflectors to control the distribution. Thirdly, they offer a lifespan of 30,000 hours or more, by contrast, Incandescent bulbs have a typical life of 1,000 hours and compact fluorescents about 8000 hours. A LED light bulb can last 25--30 years under normal conditions. Fourthly, LED lamps are mercury free and are available to recycling. Fifthly, they are rigidly supported inside so they are resistant to vibration or shock.

The disadvantages of LED lamps contain the price is relatively high, and the color rendering index of some low quality products, as well as limited temperature tolerance.

Incandescent lamps release light that colored in warm yellow or white by heating a filament connected to electric current. Incandescent light is very inefficient, as almost 98 percent of the energy were used for emitting heat. But these lamps are inexpensive to manufacture. They can work well with dimmer. Fluorescent light bulbs work through mercury vapor which generate ultraviolet light, the light is absorbed by a phosphor covering inside the lamp, making it to glow. The heat is much less than the incandescent lamps, but the problem of loss energy is still exist. What’s worse, if the lamp breaks, mercury can leak. Most fluorescent lamps are not compatible with dimmer.

The technology is improving rapidly with more and more LED lights are used to different kind of areas, for example, they are popular in gardening and agriculture in the year of 2010, and they came into use for home and commercial applications for indoor horticulture. Customers should pay more attention while they are pursuing this product. The related integrated circuit is LPC2136FBD, which is designed as one kink of single-chip 16-bit or 32 bit microcontroller device that based on an ARM7TDMI-S CPU with real-time emulation and embedded trace support. This device and be used in places where miniaturization is a key requirement, such as access control and point-of-sale applications.

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