VI -Characteristics of Light Emitting Diodes (LEDs) | EDC Lab Experiments

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How To Do VI -characteristics of Light Emitting Diodes (LEDs)
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Light Emitting Diodes (LEDs) are semiconductor devices that emit light when an electric current passes through them. Here are some key characteristics of LEDs:
1. Efficiency
LEDs are highly efficient compared to traditional incandescent and fluorescent light sources. They convert a significant portion of electrical energy into light with minimal heat generation.
2. Luminous Efficacy
The luminous efficacy of an LED is the amount of visible light produced per unit of electrical power consumed, typically measured in lumens per watt (lm/W). LEDs have high luminous efficacy, often exceeding 100 lm/W.
3. Lifespan
LEDs have a long operational life, often exceeding 25,000 to 50,000 hours. This is much longer than traditional light sources, which typically last only a few thousand hours.
4. Color Options
LEDs are available in a wide range of colors without the need for filters. This is achieved by using different semiconductor materials and through the combination of red, green, and blue LEDs.
5. Size and Design Flexibility
LEDs are small and can be used in various applications, from tiny indicator lights to large-scale lighting fixtures. Their compact size allows for versatile design options.
6. Durability and Reliability
LEDs are solid-state devices with no moving parts, making them more durable and resistant to shock and vibration compared to traditional light sources.
7. Instant On/Off
LEDs light up instantly when powered on, with no warm-up time needed. They also turn off immediately without any delay.
8. Directional Lighting
LEDs emit light in a specific direction, reducing the need for reflectors and diffusers that can cause light loss. This makes them highly efficient for applications requiring focused light.
9. Low Heat Emission
LEDs produce very little heat compared to incandescent bulbs, which release most of their energy as heat. This makes LEDs safer and more efficient.
10. Environmental Impact
LEDs are environmentally friendly as they do not contain hazardous substances like mercury, which is found in some other lighting technologies. They are also more energy-efficient, reducing overall energy consumption and greenhouse gas emissions.
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