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

By considering vehicle, signal, and road lighting as integrated means of communication, this unique authoritative work explains the thinking and scientific reasoning behind various forms of lighting and analyzes their contribution to the driver's understanding of real and potential road hazards. Attention is also given to how these forms of lighting are likely to evolve in response to the development of new technology and an improved understanding of ergonomics.

“Ronni’s mind fell completely silent. She stopped being aware of the room around her, there was only the hateful figure of a bully and an abuser ahead of her, all else was a blur.” You’re in a strange city. Your friend is missing. Could you find the courage to do what is necessary? Would you even know where to start? These are the questions faced by law graduate Ronni Wong when her friend Jenny disappears after a date with a man she met online. Finding evidence suggesting that Jenny’s internet lover hides the darkest of secrets, Ronni is forced to embark on a journey through social media to discover the identity of a kidnapper, and then a dangerous race against time through the streets of Metro Manila to save her friend’s life. The clock is ticking, can Ronni make it in time? Join Ronni as her investigation into one disappearance leads her into mortal danger. Social Murder will keep you on the edge of your seat, and at the same time challenge you to think about how you use social media. Are you safe online?

Vehicle, road, sign, and signal lighting are provided to enable drivers to reach their destinations quickly and safely. However, the attention given to how these forms of lighting function is likely to change as new technology is introduced and understanding of ergonomics and human factors improves. Lighting for Driving: Roads, Vehicle, Signs and Signals, Second Edition shows the crucial role lighting plays in road safety and examines how it could be used more effectively. With light-emitting diodes (LEDs) becoming the lighting source of choice for transport planners and vehicle designers, this book integrates information on road lighting, vehicle lighting, signs, and signals in one handy volume. International in scope and updated for this new edition, this book features lighting examples from the USA, the UK, France, Germany, The Netherlands, Denmark, Sweden, Norway, Finland, Japan, Australia, and New Zealand. Lighting in common vehicle types including cars, vans, trucks, and motorcycles is covered as well as the visibility of pedestrians and cyclists to drivers. Coverage extends to road lighting, traffic markings, vehicle designs, and internal lighting and weather conditions. Now fully updated, a final chapter looks at the future of lighting in relation to driving. The book will help the reader to understand how lighting systems on roads and vehicles work by explaining the thinking and scientific reasoning behind various forms of lighting and analyzing their contribution to the driver’s understanding of real and potential road hazards. This book will be an ideal read for ergonomists and engineers engaged in transport and road engineering, transport planners, civil engineers, vehicle designers, and electrical engineers.

Searching for even more wild places and new experiences, Dan became determined to explore 'off the map' in Africa. From the mighty Sahara Desert in the north to the dense equatorial jungles of the Congo and the open grasslands of Southern Africa, Dan turned his biggest dream into reality. Over the course of three years Dan's second major expedition spanned fifty-four thousand miles through thirty-five unique African countries. THE ADVENTURE WAS A THOUSAND TIMES BIGGER THAN HE DREAMED POSSIBLE. After exploring the Pan-American Highway from Alaska to Argentina Dan became hooked on the freedom of global overland travel, and he only wanted more. New languages, exotic foods, stunning landscapes and local people with an entirely different outlook became Dan's everyday life. As the months turned into years, through highlights and despair Dan gained a new appreciation for what it truly means to be alive. Viewing our modern world through African eyes gave Dan a new perspective, and he was pulled in by the endless joy, laughter and kindness at every turn. While the landscapes and wildlife are undeniably breathtaking, it is the natural warmth of the African people that is truly unforgettable. All across the continent Dan was welcomed with love and generosity, and now he will never be the same.

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

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.