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LED lighting knowledge

LED lighting knowledge

  • What is Light Emitting Diodes (LEDs)?
  • LEDs must be connected the correct way round, the diagram may be labelled a or + for anode and k or - for cathode (yes, it really is k, not c, for cathode!). The cathode is the short lead and there may be a slight flat on the body of round LEDs. If you can see inside the LED the cathode is the larger electrode (but this is not an official identification method). ...  <more>
  • What is Inside an LED?
  • LED's are special diodes that emit light when connected in a circuit. They are frequently used as "pilot" lights in electronic appliances to indicate whether the circuit is closed or not. A a clear (or often colored) epoxy case enclosed the heart of an LED, the semi-conductor chip. ...  <more>
  • What consumers should know about Solid State Lighting for general lighting applications?
  • Solid-state lighting (SSL) is the new lighting technology to emerge for many years: it uses semi-conducting materials to convert electricity into light. The term "solid state" refers to the fact that light in an LED is emitted from a solid object (a block of semiconductor) rather than from a vacuum or gas tube, ...  <more>
  • Color Quality of White LEDs
  • olor quality is one of the key challenges facing light-emitting diodes (LEDs) as a general light source. This paper reviews the basics regarding light and color and summarizes the most important color issues related to white light LEDs....  <more>
  • Solid State Lighting
  • Solid State Lighting (SSL) refers to a type of lighting that utilizes light-emitting diodes (LEDs), organic light-emitting diodes (OLED), or polymer light-emitting diodes as sources of illumination rather than electrical filaments or gas. ...  <more>
  • SSL-LED roadmap recommendations
  • Because solid-state lighting is a new technology, it will bring with it a number of new system-level attributes. These include programmability, small volume, ruggedness and immunity to vibration, compatibility with environmental extremes (cold and heat), and an enhanced efficiency in directed illumination....  <more>
  • LED Patents Relationship
  • Almost all big companies in LED industry are involved in the complex led patents relationships, such as Lumileds, Philips, Nichia, Osram, Cree, Toyoda Gosel, Avago, Seoul Semiconductor, Citizen, GE Lumination, Epistar, Dominant, BridgeLux, Internatix, Kingbright and so on....  <more>
  • Next Generation Lighting Initiative NGLI
  • In July 2001, Senators Jeff Bingaman of New Mexico and Mike DeWine of Ohio introduced a bill to the Senate, S.1166 (pdf - 41kb), which called for the establishment in the Department of Energy of a Next-Generation Lighting Initiative (NGLI). ...  <more>
  • IP Explanation and Ratings
  • EN 60529 outlines an international classification system for the sealing effectiveness of enclosures of electrical equipment against the intrusion into the equipment of foreign bodies (i.e. tools, dust, fingers) and moisture. This classification system utilizes the letters IP ( Ingress Protection ) followed by two or three digits....  <more>
  • Plugs and sockets around the world - Americas & Africa
  • Voltage and Cycles, Plugs and sockets around the world, Africa, America, Asia, Europe, Australasia,UK,Italy, Germany, Canada, Japan, China, South America, South Africa....  <more>
  • Plugs and sockets around the world - Asia & Australasia
  • Voltage and Cycles (Hz), Plugs and sockets around the world, Africa, America, Asia, Europe, Australasia, UK, Italy, Germany, Canada, Japan, China, South America, South Africa....  <more>
  • Plugs and sockets around the world - Europe
  • Voltage, Cycles (Hz), Plugs and sockets around the world, Africa, America, Asia, Europe, Australasia,UK,Italy, Germany, Canada, Japan, China, South America, South Africa....  <more>

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