Author : American Association of State Highway and Transportation Officials
Publisher : AASHTO
Page : 134 pages
File Size : 16,38 MB
Release : 2005
Category : Technology & Engineering
ISBN : 156051325X
This guide replaces the 1984 publication entitled An Informational Guide for Roadway Lighting. It has been revised and brought up to date to reflect current practices in roadway lighting. The guide provides a general overview of lighting systems from the point of view of the transportation departments and recommends minimum levels of quality. The guide incorporates the illuminance and luminance design methods, but does not include the small target visibility (STV) method.
Author : Kirk Tuck
Publisher : Amherst Media, Inc
Page : 0 pages
File Size : 11,9 MB
Release : 2012
Category : Photography
ISBN : 9781608954476
Accessible for professionals and hobbyists alike, this guide helps photographers navigate the transition from traditional flash and hot lights to light-emitting diode (LED) lights, the hottest new trend in lighting technology. It demystifies the process of choosing the right LED light for projects, presents commonsense methods for using LEDs and offers suggestions for achieving the perfect lighting colour and balance. Includes examples of how to use LEDs in still life images, portraits and even moving pictures. The essential guide to the biggest new trend in photography.
Author : Shen Liu
Publisher : John Wiley & Sons
Page : 375 pages
File Size : 28,13 MB
Release : 2011-07-05
Category : Technology & Engineering
ISBN : 0470827831
Since the first light-emitting diode (LED) was invented by Holonyak and Bevacqua in 1962, LEDs have made remarkable progress in the past few decades with the rapid development of epitaxy growth, chip design and manufacture, packaging structure, processes, and packaging materials. LEDs have superior characteristics such as high efficiency, small size, long life, low power consumption, and high reliability. The market for white LED is growing rapidly in various applications. It has been widely accepted that white LEDs will be the fourth illumination source to substitute the incandescent, fluorescent, and high-pressure sodium lamps. With the development of LED chip and packaging technologies, the efficiency of high power white LED will broaden the application markets of LEDs while changing the lighting concepts of our lives. In LED Packaging for Lighting Applications, Professors Liu and Luo cover the full spectrum of design, manufacturing, and testing. Many concepts are proposed for the first time, and readers will benefit from the concurrent engineering and co-design approaches to advanced engineering design of LED products. One of the only books to cover LEDs from package design to manufacturing to testing Focuses on the design of LED packaging and its applications such as road lights Includes design methods and experiences necessary for LED engineers, especially optical and thermal design Introduces novel LED packaging structures and manufacturing processes, such as ASLP Covers reliability considerations, the most challenging problem for the LED industry Provides measurement and testing standards, which are critical for LED development, for both LED and LED fixtures Codes and demonstrations available from the book’s Companion Website This book is ideal for practicing engineers working in design or packaging at LED companies and graduate students preparing for work in industry. This book also provides a helpful introduction for advanced undergraduates, graduates, researchers, lighting designers, and product managers interested in the fundamentals of LED design and production. Color version of selected figures can be found at www.wiley.com/go/liu/led
Author : Sal Cangeloso
Publisher : "O'Reilly Media, Inc."
Page : 70 pages
File Size : 35,59 MB
Release : 2012-07-10
Category : House & Home
ISBN : 1449334725
We’re on the brink of a lighting revolution with light-emitting diodes—the tiny LEDs you’ve seen in electronic devices for years. With this practical guide, you’ll go behind the scenes to see how and why manufacturers are now designing LED devices to light everything from homes and offices to streets and warehouses. Author Sal Cangeloso shows you the working parts of a “simple” LED bulb and explains the challenges electronics companies face as they push LED lighting into the mainstream. You’ll learn how you can use LEDs now, and why solid state lighting will bring dramatic changes in the near future. Explore the drivers, phosphors, and integrated circuits in a typical LED bulb Understand the challenges in producing LED bulbs with acceptable brightness, color temperature, and power consumption Learn about non-bulb LED applications, including lamps, street lights, and signage Discover the market forces driving—and impeding—the adoption of LED lighting Compare LEDs to compact fluorescent lamps (CFLs) and electron-stimulated luminescence (ESL) bulbs Gaze into the future of intelligent lighting, including networked lighting systems
Author : T. Q. Khan
Publisher : John Wiley & Sons
Page : 517 pages
File Size : 18,41 MB
Release : 2015-02-09
Category : Science
ISBN : 3527412123
Promoting the design, application and evaluation of visually and electrically effective LED light sources and luminaires for general indoor lighting as well as outdoor and vehicle lighting, this book combines the knowledge of LED lighting technology with human perceptual aspects for lighting scientists and engineers. After an introduction to the human visual system and current radiometry, photometry and color science, the basics of LED chip and phosphor technology are described followed by specific issues of LED radiometry and the optical, thermal and electric modeling of LEDs. This is supplemented by the relevant practical issues of pulsed LEDs, remote phosphor LEDs and the aging of LED light sources. Relevant human visual aspects closely related to LED technology are described in detail for the photopic and the mesopic range of vision, including color rendering, binning, whiteness, Circadian issues, as well as flicker perception, brightness, visual performance, conspicuity and disability glare. The topic of LED luminaires is discussed in a separate chapter, including retrofit LED lamps, LED-based road and street luminaires and LED luminaires for museum and school lighting. Specific sections are devoted to the modularity of LED luminaires, their aging and the planning and evaluation methods of new LED installations. The whole is rounded off by a summary and a look towards future developments.
Author : Stefan Seitz
Publisher : CLEON Verlag
Page : 226 pages
File Size : 27,79 MB
Release : 2020-11-30
Category : Fiction
ISBN : 398131719X
Not even Primus himself knows where he came from or how old he is. But he owns a piece of something that seems to be connected directly with his nebulous past. Distant memories, a weird symbol in the cellar, and a yellowing book containing an old legend are all part of the mystery that swirls around the land of Nettlewooz. Will the Dark Forest one day tell its story, or will it be the Western Swamps which reveal their secrets? Will the answers be found at the bottom of the Lunar Lake or closer to home, in the crooked old tower? Primus, together with the feisty young witch Miss Plim, heads off to solve this great mystery.
Author : Illinois. Office of Secretary of State
Publisher :
Page : 112 pages
File Size : 23,49 MB
Release : 2013
Category : Government publications
ISBN :
Author : Konrad Domke
Publisher : WIT Press
Page : 273 pages
File Size : 38,53 MB
Release : 2011
Category : Architecture
ISBN : 1845645502
The Wessex Institute of Technology has for years been convening conferences on sustainable architecture and planning, design in nature, heritage architecture, and environmental health. With the growing importance of lighting in the creation of better, healthier environments, the enhancement of heritage architecture, and the recovery of urban areas, as well as new developments in more sustainable lighting it became clear that a conference focusing on lighting issues would be useful. This book contains the papers to be presented at the first International Conference on Lighting in Engineering, Architecture and the Environment, discussing the latest developments in a variety of topics related to light and illumination, from its engineering aspects to its use in art and architecture and the effect of light on living systems and human health. Ranging from discussions of technical issues regarding equipment design and light measurement to human perception of light and the effect of light on human health, the book will be of interest to architectures, planners, environmental health experts, and stage designers in academia, industry and government, as well as colleagues discussing the latest developments in a variety of topics related to light and illumination, from its engineering aspects to its use in art and architecture and the effect of light on living systems and human health.
Author : Steve Winder
Publisher : Newnes
Page : 322 pages
File Size : 28,70 MB
Release : 2016-12-28
Category : Technology & Engineering
ISBN : 0081010249
Power Supplies for LED Driving, Second Edition explores the wide use of light-emitting diodes due to their efficient use of power. The applications for power LEDs include traffic lights, street lamps, automotive lighting, architectural lights, theatre lighting, household light replacements, signage lighting (replacing neon strip lights and fluorescent tubes), LCD display backlighting, and many more. Powering (driving) these LED's is not always simple. Linear driving is inefficient and generates far too much heat. With a switching supply, the main issues are EMI, efficiency, and of course cost. This book covers the design trade-offs involved in LED driving applications, from low-power, to UB-LEDs and beyond. - Provides a practical, hands-on approach to power supply design for LED drivers - Contains detailed examples of what works throughout the design process - Presents commentary on how the calculated component value compares with the actual value used, including a description of why the choice was made
Author : Tole Sutikno
Publisher : Institute of Advanced Engineering and Science
Page : 87 pages
File Size : 43,86 MB
Release : 2014-03-01
Category :
ISBN :
Table of Contents Using HBMO Algorithm to Optimal Sizing & Sitting of Distributed Generation in Power System Noradin Ghadimi 1 – 8 Management of Urban Parking Lot Energy Efficiency with the Application of Wind Turbine and LED lights Bekir Z Yuksek, Ulan Dakeev 9 – 14 Indirect Vector Control of Three Phase Induction Motor using PSIM Nagulapati Kiran 15 – 24 Improved Dynamic Response of Buck Converter using Fuzzy Controller Nagulapati Kiran, Ch Varaha Narasimha Raja 25 – 36 Sliding Mode Control of Buck Converter Nagulapati Kiran 37 – 44 Two Parameter Controller for a Single Machine Infinite Bus System Ch. Varaha Narasimha Raja 45 – 50 A Hybrid Hardware Verification Technique in FPGA Design Mojtaba.Dehghani Firouzabadi, Hossein Heidari 51 – 54 A Genuine Random Sequential Multi-signature Scheme Yonglong Tang 55 – 68
