LED Full Form in Computer | What is the full form of LED in Computer
LED Full Form - Light Emitting Diode
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Light Emitting Diode
- LED stands for Light Emitting Diode. It’s a two-lead semiconductor light. It’s a pn-junction diode which emits light when activated.
- It’s a very important electronic device because it's used in a lot of electrical and electronic devices now days.
- It’s mostly used in electronic test equipments, TV's, calculators, watches, radios, etc.
How LED works
- When a suitable voltage of electricity is applied to the leads, electrons recombine with electron holes and release energy within the form of photons. This effect is called electroluminescence.
- The color of LED's light is determined by the energy band gap of the semiconductor.
- LED is proved a revolutionary product in the field of light source. Its lamps are very energy efficient, economical and long lasting.
- As compared to conventional lighting bulbs and fluorescent light sources, it's almost 80% energy efficient.
Benefits of LED
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Light Emitting Diode Benefits
Energy efficient
- LED requires very less power. For example, LED TVs are more energy efficient than CRT and LCD TVs.
- LED doesn't produce heat, so it reduces the cooling loads also.
- LED doesn't produce buzzing noises and flickers etc.
Environment Friendly
- LED lights are non-toxic. It doesn't contain mercury, lead or cadmium.
- The enhanced use of LED lights can reduce carbon emission.
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Long Life
- With proper installation, the LED is worked for a long span of time with a low maintenance cost.
Maintenance and Safety
- LED needs very low maintenance cost.
- It also requires very low recycling charge.
Recyclable
- LED is recyclable with low recycling charges.
Better Picture Quality
- LED offers better image quality than LCD.
- LEDs have allowed new text, video displays and sensors to be developed. Due to their high switching rates, it is also useful in advanced communication technology.
Image of LED light
![Images of Led Light](https://cdn.wikitechy.com/full-form/led-light.png)
Images of Led Light
Advantages
- The main advantage of LED is, LEDs are Energy Efficient and Power consumption is very Low, LEDs operate on very Low Voltage.
- LEDs are emitting an extremely high level of brightness and the intensity of the light is extremely much above other lighting technology
- Heat produces from the LED is extremely less that other lights, like incandescent bulb
- LEDs are emitted the energy, mainly that are within the color spectrum, therefore the UV emission isn't there in LED. So our eyes aren't getting affected.
- LEDs have great lifetime, average lifetime of a LED is \approx 50000 Hour (5Years approx).
- LED can reveal the actual color of the light as compared to other lights, therefore the Color Rendering Index (CRI) of LED is great.
- LEDs are in very small size, so that anywhere we will fit a LED where it’s needed, So LED may be a flexible and user friendly component.
Disadvantages
- LED performance largely depends on the limited temperature of the operating environment, if operating a LED in higher temperatures may end in overheating the LED and that will lead to device failure.
- Voltage supplied to the LED must be above the threshold and current below the rating, otherwise the LED could be damage. Therefore the voltage sensitivity must be followed for LED.
- LED lighting is costlier than the normal light sources, like Incandescent bulb
- LEDs can cause light pollution than other light sources due to Blue pollution. That's cool white LEDs emit proportionally more blue light than conventional outdoor light sources.
- LEDs don't produce a spherical distribution of light, so they aren't advisable to use in open large area.
- The efficiency of LED decreases as the current increases.
- LED requires the correct electric polarity to light-up, so a rectifier must be used to maintain the polarity.