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Light emitting diodes are used to emit light! They can be used in flashlights, car headlights and traffic signals. Originally they were used for digital displays on clocks and calculators. There are many used for simple indicators such as on flash drives and under status lights in computer equipment. If you have a CAPS lock key light on your keyboard, it is an LED.
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The use of LEDs is to save a electricity, they consume less power than a light bulb, and last longer.
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LED's or `light emitting diodes' are solid state lights, meaning that they have no filament, which generate their light as power is applied to a junction which could be made up of many different materials such as gallium arsenide. Depending on the materials used, the light can be several different colors ranging from red to white and all colors between.
Many times in the epoxy shell in which the electronic junction is encapsulated, they'll add an additional `doping' compound to assist in the light producing a different or enhanced color. For instance a white LED is usually a blue LED which is `doped' to produce a white light. Over a period of time, the white LED will start to get bluish as it ages and the doping `wears out'.
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1] to display a condition on a panel
2] In great quantity it can be used as a lamp or light illumination
And there many types of the same family that give out infrared. ultraviolet and many other colors just by shifting to a low or hi in the color spectrum range.
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Are colored Christmas tree leds the same as the leds used in grow lights?
No.
What can leds be used for?
lighting stuff?
Where LEDs commonly used today?
In torches,
What type of LEDs used in Xbox360 called?
LED's
Why do green leds on modern stop lights fail before leds of other colors?
Maybe it's used more? I don't Know.
Which is a more powerful light - 95 leds or 128 leds?
If your compairing apples to apples like 3 watt leds to 3w leds then 128. The more leds the higher the power.
What lights were used in car headlights before LEDs?
Halogen Bulbs
Make a list of the uses for leds?
LEDs are used in traffic lights, on computer lights, car lights and indicators. You can also purchase LED flashlights and torches. Can be used in small devices for a variety of uses.
When to connect LEDs in parallel?
Basically, when LEDs are connected in parallel, the LEDs with the lowest resistance will be the brightest, the other LEDs will be dimly lit or not lit at all. Therefore, use LEDs with the same model number and colour.
What ballasts are used for LEDs?
We don't use ballasts for LEDs. Ballasts are used with fluorescent lighting fixtures to both step up voltage to fire the tube and to provide an in-circuit load when the tube fires and conducts. LEDs have a series resistor either integral to the LED or separate to it which limits current in the LED when it is turned on.
How much energy does a led use per hour?
LEDs come for different power ratings. Miniature LEDs use between approximately 40-90 mW. High-power LEDs - used for illumination - can use hundreds of watts per square centimeter.
Is there a light source can be used instead of laser in photoelectronics applications?
LEDs can be used but they will provide much lesser bps
