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A Little About LED Flashlights
 
Among the most popular types of flashlights on the market today are LED flashlights. A Light Emitting Diode (LED) is a semiconductor device which converts electricity into light. LED flashlights have been around since the early 1960s, In the beginning, LED flashlights could only be produced with groups of three LEDs and cheap LED flashlights were totally out of the question. A big improvement change took place in 1993 with the advent of the blue indium gallium chip with a phosphor coating. This is used to create the wave shift necessary to emit white light from a single diode. This process for LED flashlight production is much less expensive for the amount of light generated.
The best LED flashlights are better at placing light in a single direction than flashlights with incandescent or fluorescent bulbs. An excellent example of this are Cree LED flashlights, which have proven to be extremely popular with bicyclists who ride at night. Because of their directional output, they have unique design features that can be exploited by clever designs for countless electronic devices. LED flashlights are more rugged and damage-resistant than flashlights with compact fluorescent bulbs and incandescent bulbs. LED flashlights don't flicker and the choice of rechargeable LED flashlights address environmental issues.