LED-Lighting (Page 2)

Royal Philips Electronics of the Netherlands is a global leader in healthcare, lifestyle and technology, delivering products, services and solutions through the brand promise of “sense and simplicity”.

Philips – Tech Innovator and Inventor

The company was founded in 1891 by Gerard Philips, a maternal cousin of Karl Marx, in Eindhoven, the Netherlands. Its first products were light bulbs ‘and other electrotechnical equipment’. Its first factory remains as a museum. Koninklijke Philips Electronics N.V. – Wikipedia

Vintage Philips Tape Recorder Transistor based

(I have fixed some of these decades ago, if i remember right, it had only transistors, no chips. I am not sure if it was only germanium transistors, but i used both silicon and germanium devices to repair – ananth)

Vintage Philips Tape Recorder Transistor based

Discover everything you need to know about the LED phenomenon. What is a LED? How does it work? Learn about the LED basics

Philips - Tech Innovator and Inventor
From Components and Materials – Industrial Electronics and Instruments

Technology licensing company. Manages and Provides Licenses to IP Intellectual property and Patents of semiconductor Technology. Founded in 1990.  XDR, DDR3, RDRAM and FlexIO are some of the Technology Solutions from Rambus.

Rambus – IP Provider – Semiconductors

“Beginning with edge-lit back lighting, Rambus has pioneered light guide-based design solutions for a broad range of LED lighting applications, enabling a new level of styling, efficiency and control of light.”

LED lighting technology - Rambus

LED lighting technology

Rambus’ lighting solutions enable manufacturers to use fewer or lower-cost LEDs in their general lighting products while delivering superior light quality and output.

Sub contract manufacture, electronic assembly, system development, custom software, control panels with for automation and manufacturing.

SDL Spimin

SDL Spimin Developments – Electronic Manufacturing

“”Established in 1976, Spimin Developments Limited design and manufacture its own range of industrial electronics and has a highly experienced contract manufacturing division.”

SDL Spimin Developments - Electronic Manufacturing

They have a range of production equipment is extensive, including surface mount machinery, convection ovens, flow soldering machines, wire stripping machines and a wide range of test and inspection equipment.

Their production, test and inspection staff have many years experience in producing high quality assemblies to the highest specifications.

Seoul Semiconductor is a Korean company manufacturing Optical Semiconductors like LED devices for Lighting. They have designed a LED chip called Acriche, a semiconductor light source that operates directly from AC power or Mains Power, useful for residential and commercial lighting.

LED devices from Seoul Semiconductor

Z5 series is very small size (3.5*3.5*2.0mm), ceramic-based package, and large radiation plate make heat management of Z5 easy.

Z Power LED – Z5M

Z-Power-LED-Seoul.jpg

High-intensity SMD LEDs Z5M/P with a thermally optimized design for general lighting. Even available with a color rendering index(CRI) of 90.

GE Lumination offers a wide range of world-class, environmentally responsible LED solutions and systems for signage, architectural, transportation, display lighting and general illumination applications. Lumination is a GE Consumer & Industrial business in collaboration with Nichia.

GE – LED Lighting Solutions

Solid-state lighting solutions can be built using Vio LED. Energy savings, long life and robustness. “Vio LEDs combine 405 nm violet chips with proprietary phosphors to create a natural white light.” Warm white light, similar to Edison Filament Lamp.

Vio White LED – Lumination GE

From Tech Products Preview – Electronic Tools and Industrial Equipment

Some Features

  • 1, 4 and 7 watt designs
  • 70 CRI (45 lpw) & 85 CRI (38 lpw)
  • 180° beam angle
  • 70% lumen maintenance at 50,000 hours under normal operation

The MAX1561 and MAX1599 include an internal, high-voltage, low-RDS(ON) N-channel MOSFET switch for high efficiency and maximum battery life. A single DualMode input provides a simple means of brightness adjustment and on/off control.

MAX1561 – 26V Step-Up Converters – Maxim IC

“High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs”

MAX1561 - 26V Step-Up Converters - Maxim IC

 

Fast 1MHz (500kHz for the MAX1599) current-mode, pulse-width modulated (PWM) operation allows for small input and output capacitors and a small inductor while minimizing ripple on the input supply/battery. Programmable soft-start eliminates inrush current during startup.

Some Features –

  • Accurate Current Regulation for Uniform Illumination
  • High Efficiency Up to 87%
  • 2.6V to 5.5V Input Range
  • 0.3µA Shutdown Current
  • 26V (max) Output with Overvoltage Protection
  • Up to 900mW Output Power with Internal 30V MOSFET Switch

Why Drive White LEDs with Constant Current? – Maxim

Here you can understand how to drive white LED’ s for flashlight or Internal lamp. I have tried substituting for tubelights and bulbs. These LED’s are amazing. The amount of light at even 100mW is phenomenal. The future is indeed LED Lights. But more Amber component is required in LED to give the warm feeling of an Edison Lamp.