The ledes are used as indicators and in many lighting devices. The first ledes emitted low-intensity red light, but modern devices emit high brightness light in the infrared, visible and ultraviolet spectrum.
Because of their ability to operate at high frequencies, are also useful in advanced communications technologies and control. Infrared ledes also used in remote control units of many commercial products including audio and video.
Features
Ways to determine the polarity of a LED insertion [edit]
There are three main ways of knowing the polarity of a LED:
The longest leg will always be the ánodo.3
On the cathode side, the base of the LED has a flat edge.
Within the led, the board indicates the anode. Can be recognized because it is smaller than the anvil, indicating the cathode.
Advantages
The ledes present many advantages over incandescent light sources and fluorescent, such as low power consumption, a longer life, reduced size, vibration resistance, low heat emission, no mercury (which when exposed in the environment is highly harmful) compared with fluorescent technology, not create high magnetic fields and magnetic induction technology with higher residual radiation which is created for the human being; They reduce noise on power lines are special for use with photovoltaic (solar panels) compared to any other current technology; not affected by the intermittent illumination (ie can function as strobe lights) and this does not reduce its average life, you are special to systems antiexplosion because they have a strong material, and in most colors (except blue ledes ), have a high level of reliability and durability.
Starting time
The ledes have the advantage of a very short power (less than 1 millisecond) compared with high-powered lights such as luminaires high intensity sodium vapor, metal halide, halide or halogenated and other systems incandescent technology.
Variety of colors
Ledes1 different colors.
The great variety of colors that occur ledes has allowed the development of new electronic displays monochrome text, bicolor, tricolor and RGB (full color displays) with the ability to playback video for advertising, informational or signaling purposes.
