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Author: Sal Cangeloso
Publisher: "O'Reilly Media, Inc."
ISBN: 1449334725
Category : House & Home
Languages : en
Pages : 70
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Book Description
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: Sal Cangeloso
Publisher: "O'Reilly Media, Inc."
ISBN: 1449334725
Category : House & Home
Languages : en
Pages : 70
Get Book Here
Book Description
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
ISBN: 3527412123
Category : Science
Languages : en
Pages : 517
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Book Description
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: Tommy Spaulding
Publisher: Crown Currency
ISBN: 055341903X
Category : Business & Economics
Languages : en
Pages : 257
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Book Description
New York Times bestselling author Tommy Spaulding shows you how looking inwards--and leading with your heart--can transform your life. In his New York Times bestseller, It’s Not Just Who You Know, world renowned leadership speaker and former CEO of Up with People Tommy Spaulding talked about the power of building genuine and lasting relationships both personally and professionally. In The Heart-Led Leader, Spaulding turns his focus to ourselves--to who we are. Authentic leaders, Spaulding says, live and lead from the heart. The values and principles that guide our lives and shape our ability to lead others is far more important than our title, or our ability to crunch numbers, or the impressive degrees we display on our walls. To effect true transformational change, heart-led leaders draw on the qualities of humility, vulnerability, transparency, empathy and love. Illustrated with stories from his own life, and from some of the exceptional leaders he has met and worked with over the years, Spaulding unpacks what those qualities mean, talks about the 18-inch journey from the head to the heart--from our intellect to our emotions--and shows us how to incorporate them into our careers, into how we manage and lead others, and into how we live our lives. It is a vision of leadership that has the power to transform everything we do, and the lives of everyone we touch.
Author: M. Nisa Khan
Publisher: CRC Press
ISBN: 146650773X
Category : Science
Languages : en
Pages : 254
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Book Description
Understanding LED Illumination elucidates the science of lighting for light emitting diodes. It presents concepts, theory, simulations, and new design techniques that shine the spotlight on illumination, energy efficiency, and reducing electrical power consumption. The text provides an introduction to the fundamentals of LED lamp design, and highli
Author: Steve Winder
Publisher: Newnes
ISBN: 0081010249
Category : Technology & Engineering
Languages : en
Pages : 322
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Book Description
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: Bob Johnstone
Publisher: Createspace Independent Publishing Platform
ISBN: 9781546737421
Category :
Languages : en
Pages : 334
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Book Description
What kind of people does it take to change the light bulb? That is the question Bob Johnstone addresses in this follow-up to Brilliant!, his critically acclaimed book on the origins of the LED revolution. The answer is passionate individuals determined to make the world a better - and better-lit - place. The book tells the story of what has been called "one of the fastest technology shifts in human history." It is a shift that affects us all. Lighting accounts for up to twenty percent of the electricity we consume. LEDs use much less electricity than incandescent light bulbs, leading to huge reductions in our energy consumption, and helping to slow down climate change. But the LED revolution also encompasses light for better health and year-round crops, as well new, previously undreamed-of applications.
Author: Todd Olson
Publisher: John Wiley & Sons
ISBN: 1119660874
Category : Business & Economics
Languages : en
Pages : 272
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Book Description
A playbook on product-led strategy for software product teams There's a common strategy used by the fastest growing and most successful businesses of our time. These companies are building their entire customer experience around their digital products, delivering software that is simple, intuitive and delightful, and that anticipates and exceeds the evolving needs of users. Product-led organizations make their products the vehicle for acquiring and retaining customers, driving growth, and influencing organizational priorities. They represent the future of business in a digital-first world. This book is meant to help you transform your company into a product-led organization, helping to drive growth for your business and advance your own career. It provides: A holistic view of the quantitative and qualitative insights teams need to make better decisions and shape better product experiences. A guide to setting goals for product success and measuring progress toward meeting them. A playbook for incorporating sales and marketing activities, service and support, as well as onboarding and education into the product Strategies for soliciting, organizing and prioritizing feedback from customers and other stakeholders; and how to use those inputs to create an effective product roadmap The Product-Led Organization: Drive Growth By Putting Product at the Center of Your Customer Experience was written by the co-founder and CEO of Pendo—a SaaS company and innovator in building software for digital product teams. The book reflects the author’s passion and dedication for sharing what it takes to build great products.
Author: Jian-Jang Huang
Publisher: Woodhead Publishing
ISBN: 0857099302
Category : Technology & Engineering
Languages : en
Pages : 673
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Book Description
The development of nitride-based light-emitting diodes (LEDs) has led to advancements in high-brightness LED technology for solid-state lighting, handheld electronics, and advanced bioengineering applications. Nitride Semiconductor Light-Emitting Diodes (LEDs) reviews the fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations. Part one reviews the fabrication of nitride semiconductor LEDs. Chapters cover molecular beam epitaxy (MBE) growth of nitride semiconductors, modern metalorganic chemical vapor deposition (MOCVD) techniques and the growth of nitride-based materials, and gallium nitride (GaN)-on-sapphire and GaN-on-silicon technologies for LEDs. Nanostructured, non-polar and semi-polar nitride-based LEDs, as well as phosphor-coated nitride LEDs, are also discussed. Part two covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots. Further chapters discuss the development of LED encapsulation technology and the fundamental efficiency droop issues in gallium indium nitride (GaInN) LEDs. Finally, part three highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infrared emitters, and automotive lighting. Nitride Semiconductor Light-Emitting Diodes (LEDs) is a technical resource for academics, physicists, materials scientists, electrical engineers, and those working in the lighting, consumer electronics, automotive, aviation, and communications sectors. - Reviews fabrication, performance, and applications of this technology that encompass the state-of-the-art material and device development, and practical nitride-based LED design considerations - Covers the performance of nitride LEDs, including photonic crystal LEDs, surface plasmon enhanced LEDs, color tuneable LEDs, and LEDs based on quantum wells and quantum dots - Highlights applications of nitride LEDs, including liquid crystal display (LCD) backlighting, infra-red emitters, and automotive lighting
Author: Susan Eisenhower
Publisher: Macmillan + ORM
ISBN: 1250238781
Category : Biography & Autobiography
Languages : en
Pages : 309
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Book Description
“Lays bare the essence of [President Eisenhower’s] leadership in war and peace—his singular devotion to the unity and security of the American people.” —The Wall Street Journal Few leaders have made decisions as momentous—and varied—as Dwight D. Eisenhower. From D-Day to Little Rock, from the Korean War to Cold War crises, from the Red Scare to the Missile Gap controversies, Ike was able to give our country eight years of peace and prosperity by relying on a core set of principles. These were informed by his heritage and upbringing, as well as his strong character and personal discipline—but he also avoided making himself the center of things. He was a man of judgment, and a steadying force. He sought national unity by pursuing a course he called the “Middle Way” that tried to make winners on both sides of any issue. Ike was a strategic, not an operational leader, who relied on a rigorous pursuit of the facts for decision-making. His talent for envisioning a whole, especially in the context of the long game, and his ability to see causes and various consequences, explains his success as Allied Commander and as President. After making a decision, he made himself accountable for it, recognizing that personal responsibility is the bedrock of sound principles. Written by his granddaughter, a policy analyst and national security expert, How Ike Led reveals the personality, beliefs, and habits that allowed Eisenhower to lead America through a transformational time. “As good a picture of Ike as we have ever had.” —David Nichols, author of Eisenhower 1956 “Highly personal anecdotes supplement [the author’s] research. Armchair historians will treasure this book.” —Booklist Includes photographs
Author: Ron Lenk
Publisher: John Wiley & Sons
ISBN: 1118011732
Category : Technology & Engineering
Languages : en
Pages : 216
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Book Description
This book covers all of the information needed to design LEDs into end-products. It is a practical guide, primarily explaining how things are done by practicing engineers. Equations are used only for practical calculations, and are kept to the level of high-school algebra. There are numerous drawings and schematics showing how things such as measurements are actually made, and showing curcuits that actually work. There are practical notes and examples embedded in the text that give pointers and how-to guides on many of the book's topics. After reading each chapter of the book, readers will have the knowledge to implement practical designs. This book will be kept as a reference tool for years to come.
