LED lighting control systems

Topics: Lighting, Light-emitting diode, Light Pages: 11 (3362 words) Published: June 21, 2014
Universitatea Tehnica din Cluj-Napoca

Instalați Electrice

LED Lighting Control Systems

Prof. Dr. Dorin Beu
Student: Ari Azevedo

May 2014

Universitatea Tehnica din Cluj-Napoca – Instalați Electrice

Index

Introduction .................................................................................................................................. 3 LED Lighting ................................................................................................................................... 4 LED Lighting Advantages ............................................................................................................... 5 LED Lighting Main Applications ..................................................................................................... 6 LED Lighting Control Systems and Protocols ................................................................................. 7 Bibliography ................................................................................................................................ 11

2
LED Lighting Control Systems - Ari Azevedo

Universitatea Tehnica din Cluj-Napoca – Instalați Electrice

Introduction

This essay was made to accomplish the requirements about the subject of Instalați Electrice. It will approaches the contents of the subject, more specifically the LED lighting systems and their applications nowadays.

For over 100 years, incandescent and gas discharge lamps in lighting ensured a large variety of applications, like signaling, general lighting of buildings and streets and many other applications. With the advance of technology and the necessity of economize energy, time and money appears the LED lighting.

Light-emitting diodes (LEDs) are a semiconductor technology whose application to main purpose lighting is quickly developing, with significant potential for energy savings. LED devices perform very well under lab conditions, proving up to 10 times more efficient than incandescent lights. Recently, the development of white LEDs is what has brought it into the public vision as a replacement for the other white light sources. In this essay, firstly, it will be introduced the LED technology, the advantages, the mainly applications also and some LED lighting control systems as well.

3
LED Lighting Control Systems - Ari Azevedo

Universitatea Tehnica din Cluj-Napoca – Instalați Electrice

LED Lighting

Light-emitting diodes (LEDs) are semiconductor devices that converts electrical power into light. LED lighting is also called “solid state lighting” because the light is emitted from a solid object (block of semiconductor material) rather than from a gas tube or vacuum like the traditional incandescent or fluorescent lights. Unlike the incandescent or fluorescent lights, LEDs are not inherently white. “White” light is actually a mix of wavelengths in the visible band of spectrum, where LEDs emit light in a short range of wavelengths and that’s why they are ideal to produce colored light.

There are two mainly types of LEDs: LED and OLED (organic light-emitting diodes). The LED is different than electroluminescent lamp in that uses a small semiconductor crystal with reflectors and many other parts with the purpose of make the light brighter and focused in a single point. OLED is similar to the electroluminescent lamp in design but its difference comparing to LED and electroluminescent lamps is its constitution. OLEDs are constituted by organic carbon molecules in the layer which emits light.

LED’s light is created in a semiconductor material through the electroluminescence phenomenon (the material emit light when the electric current or an electrical field passes over that material, when the electrons are sent through the material and fill the electron holes). Kinds of semiconductor materials like silicon or germanium can control and create the number of electron holes through an element adding process named doping. By doping a...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • MANAGEMENT CONTROL SYSTEM Controls for Essay
  • Led Lighting Essay
  • Led Lighting Essay
  • Essay about LED Lighting Market in Japan
  • control Essay
  • Led Lighting Essay
  • Control Systems Essay
  • The Lighting & LED Accessories Exhibition of Huayi Lighting Company Essay

Become a StudyMode Member

Sign Up - It's Free