0925.0107 Application Field and Working Principle

Introduction

LEDs (Light Emitting Diodes) are semiconductor devices that make lighting applications possible. LEDs are today replacing lamps (such as incandescent, CFL, etc) in numerous ways. They offer many advantages over lamps such as longer life, better performance and higher efficiency.

Applications of LEDs

Today LEDs are being used in many lighting applications, including residential, commercial and industrial lighting. Applications range from street lighting to decorative lighting and even car headlight designs.

LEDs are used for their long life expectations, low maintenance costs and efficient performance. Their long life protects the environment from frequent lamp replacement and the low energy consumption provide savings in operating costs. LEDs are also finding use in high intensity lighting applications such as floodlighting and spot lighting.

Working Principle

LEDs are basically semiconductor diodes that emit light when a current passes through them. The light emitted is usually in the visible spectrum, depending on the material used for the LED. The LED is controlled by an electrical signal, usually from a voltage source. When this electrical signal is applied, electrons move through the semiconductor material, creating light.

The current that flows through the LED is determined by the voltage applied to it. Different voltage levels give different brightness levels. LEDs use a lot less energy than electric incandescent light bulbs that produce heat as well as light. This makes them much more efficient and cost effective.

Conclusion

LEDs are fast becoming the preferred choice for lighting applications due to their longer life, better performance and higher efficiency. LED lighting offers significant savings in energy costs, as well as offering benefits to the environment. LEDs are being used in a wide range of lighting applications, from street lighting to decorative lighting, and will continue to gain popularity in the future.