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Power Supplies For Led Drivers

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Power Supplies for LED Driving

Power Supplies for LED Driving Book
Author : Steve Winder
Publisher : Newnes
Release : 2016-12-28
ISBN : 0081010249
Language : En, Es, Fr & De

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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

Led Lighting and Drivers

Led Lighting and Drivers Book
Author : J Marcos Alonso
Publisher : Unknown
Release : 2019-11-27
ISBN : 9781709429163
Language : En, Es, Fr & De

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Book Description :

The book is organized in four chapters. Chapter 1 deals with an introduction to light and lighting. As a power electronics engineer working on LEDs and lighting systems in general, I think it is important for the reader to have the basic knowledge about lighting systems, which I have tried to summarize in this chapter. Because of the extremely interesting possibilities of LEDs to generate different light colors, Chapter 1 includes a section related to the understanding of color quantification and measurement in different color spaces. The Chapter also includes several examples on light and color calculations.In order to develop and implement a suitable LED driver, it is necessary to have a good knowledge about LED behavior and characteristics. Thus, Chapter 2 aims at providing the reader with the most important issues related to LED operation and modeling from a practical point of view. The most common LED structures and materials are presented in this chapter together with the most relevant electrical, thermal and optical characteristics, making special emphasis on those characteristics provided by LED manufacturers in their datasheets. Special sections are dedicated to light dimming and color mixing. The chapter is closed with a brief review of organic LED (OLED) technology, which is another promising LED technology nowadays.Chapter 3 is devoted to DC LED drivers, which are those LED drivers intended to supply the LED from a DC voltage source, like a battery or a DC bus. This chapter covers the three most relevant technologies that are being used to implement DC LED drivers at the present time, which are those based on linear regulators, switched capacitor regulators and switching regulators. The most relevant solutions to implement DC LED drivers are reviewed from a practical point of view. The chapter also reviews the most common control methods applied to DC LED drivers. Examples are included by means of computer simulations based on LTspice, which is a free but powerful SPICE-based simulation software developed by former Linear Technologies Company, now part of Analog Devices. The chapter ends with a section devoted to LED configurations, namely, series, parallel and matrix configurations, which are employed to implement high-power LED lamps.Finally, Chapter 4 is dedicated to off-line LED drivers. This is the denomination given to LED drivers that are intended to operate from an AC grid voltage. These are the most complicated LED drivers since they usually require the implementation of a front-end power-factor-correction (PFC) stage followed by a downstream DC-DC converter to adapt voltage levels and provide regulated current to the LED lamp. The most important standards and regulations related to this type of LED drivers are presented at the beginning of the chapter. Then, single-stage LED drivers are studied, which can be used as a stand-alone off-line LED driver or as a first stage in a two-stage off-line LED driver. The highly-relevant problem of requiring a large storage capacitance in single-stage off-line LED drivers to cope with the double-line-frequency pulsating power originated from line voltage rectification is addressed in this chapter. Finally, integrated two-stage off-line LED drivers are presented and studied as a solution to reduce the storage capacitance of off-line LED drivers, aiming at using high-reliability film-capacitors instead of less reliable electrolytic capacitors. LTspice simulation examples are also provided in this chapter to allow the reader to have a better idea about the design and operation of this type of LED drivers.

Solid State Lighting Reliability Part 2

Solid State Lighting Reliability Part 2 Book
Author : Willem Dirk van Driel,Xuejun Fan,Guo Qi Zhang
Publisher : Springer
Release : 2017-08-13
ISBN : 3319581759
Language : En, Es, Fr & De

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Book Description :

In the past four years we have witnessed rapid development in technology and significant market penetration in many applications for LED systems. New processes and new materials have been introduced; new standards and new testing methods have been developed; new driver, control and sensing technologies have been integrated; and new and unknown failure modes have also been presented. In this book, Solid State Lighting Reliability Part 2, we invited the experts from industry and academia to present the latest developments and findings in the LED system reliability arena. Topics in this book cover the early failures and critical steps in LED manufacturing; advances in reliability testing and standards; quality of colour and colour stability; degradation of optical materials and the associated chromaticity maintenance; characterization of thermal interfaces; LED solder joint testing and prediction; common failure modes in LED drivers; root causes for lumen depreciation; corrosion sensitivity of LED packages; reliability management for automotive LEDs, and lightning effects on LEDs. This book is a continuation of Solid State Lighting Reliability: Components to Systems (published in 2013), which covers reliability aspects ranging from the LED to the total luminaire or system of luminaires. Together, these two books are a full set of reference books for Solid State Lighting reliability from the performance of the (sub-) components to the total system, regardless its complexity.

Design and Control of Power Converters 2019

Design and Control of Power Converters 2019 Book
Author : Manuel Arias
Publisher : MDPI
Release : 2021-07-02
ISBN : 3036515631
Language : En, Es, Fr & De

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Book Description :

In this book, 20 papers focused on different fields of power electronics are gathered. Approximately half of the papers are focused on different control issues and techniques, ranging from the computer-aided design of digital compensators to more specific approaches such as fuzzy or sliding control techniques. The rest of the papers are focused on the design of novel topologies. The fields in which these controls and topologies are applied are varied: MMCs, photovoltaic systems, supercapacitors and traction systems, LEDs, wireless power transfer, etc.

Advances in Smart Grid Technology

Advances in Smart Grid Technology Book
Author : Pierluigi Siano
Publisher : Springer Nature
Release : 2021-09-21
ISBN : 9811572453
Language : En, Es, Fr & De

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Book Description :

Download Advances in Smart Grid Technology book written by Pierluigi Siano, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Phasor Power Electronics

Phasor Power Electronics Book
Author : Chun T. Rim
Publisher : Springer
Release : 2016-03-29
ISBN : 9811005362
Language : En, Es, Fr & De

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Book Description :

This book presents a comprehensive introduction to the principles of power electronics, focusing on the switched transformer concept and phasor transformation techniques as employed in the analysis and design of power electronic circuits. Phasor transformations, as introduced in this book, make the time-varying nature of a switching converter simple and easy to handle, transforming it into an equivalent time-invariant circuit. The book starts with an introduction to the philosophy and fundamental principles of power electronics. The switched transformer concept, which is applicable to any switching converter, is introduced, and it is shown how DC-DC converters analyses are then so straightforward that very little equational manipulation is needed. Then the phasor transformation techniques are comprehensively explained over three parts. Single phase and multi-phase AC systems are dealt with through the single phase phasor transformation and circuit DQ transformation, respectively. A general unified phasor transformation is then introduced for the static and dynamic cases. The final part of the book considers current and potential extensions of the technique in various fields of application, including wireless power transfer, signal processing, power systems and renewable energy. The book avoids the piece-wise linear circuit models used in other titles, with which the mathematical results become too complicated to be used in practice. No cumbersome equations or matrix manipulations are needed with the phasor transformation techniques introduced in this book. It will be a valuable reference source for engineering students and practising researchers in power electronics and related areas.

Analog Circuit Design Volume Three

Analog Circuit Design Volume Three Book
Author : Bob Dobkin,John Hamburger
Publisher : Newnes
Release : 2014-11-29
ISBN : 0128004665
Language : En, Es, Fr & De

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Book Description :

Design Note Collection, the third book in the Analog Circuit Design series, is a comprehensive volume of applied circuit design solutions, providing elegant and practical design techniques. Design Notes in this volume are focused circuit explanations, easily applied in your own designs. This book includes an extensive power management section, covering switching regulator design, linear regulator design, microprocessor power design, battery management, powering LED lighting, automotive and industrial power design. Other sections span a range of analog design topics, including data conversion, data acquisition, communications interface design, operational amplifier design techniques, filter design, and wireless, RF, communications and network design. Whatever your application -industrial, medical, security, embedded systems, instrumentation, automotive, communications infrastructure, satellite and radar, computers or networking; this book will provide practical design techniques, developed by experts for tackling the challenges of power management, data conversion, signal conditioning and wireless/RF analog circuit design. A rich collection of applied analog circuit design solutions for use in your own designs. Each Design Note is presented in a concise, two-page format, making it easy to read and assimilate. Contributions from the leading lights in analog design, including Bob Dobkin, Jim Williams, George Erdi and Carl Nelson, among others. Extensive sections covering power management, data conversion, signal conditioning, and wireless/RF.

Proceedings of International Ethical Hacking Conference 2018

Proceedings of International Ethical Hacking Conference 2018 Book
Author : Mohuya Chakraborty,Satyajit Chakrabarti,Valentina Emilia Balas,J. K. Mandal
Publisher : Springer
Release : 2018-10-04
ISBN : 9811315442
Language : En, Es, Fr & De

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Book Description :

This book discusses the implications of new technologies for a secured society. As such, it reflects the main focus of the International Conference on Ethical Hacking, eHaCon 2018, which is essentially in evaluating the security of computer systems using penetration testing techniques. Showcasing the most outstanding research papers presented at the conference, the book shares new findings on computer network attacks and defenses, commercial security solutions, and hands-on, real-world security experience. The respective sections include network security, ethical hacking, cryptography, digital forensics, cloud security, information security, mobile communications security, and cyber security.

Optoelectronics

Optoelectronics Book
Author : Sergei Pyshkin,John Ballato
Publisher : BoD – Books on Demand
Release : 2017-07-12
ISBN : 9535133691
Language : En, Es, Fr & De

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Book Description :

Optoelectronics - Advanced Device Structures (Book IV) is following the Optoelectronics (Books I, II, and III) published in 2011, 2013, and 2015, as part of the InTech collection of international works on optoelectronics. Accordingly, as with the first three books of the collection, this book covers recent achievements by specialists around the world. The growing number of countries participating in this endeavor as well as joint participation of the US and Moldova scientists in edition of this book testifies to the unifying effect of science. An interested reader will find in the book the description of properties and applications employing organic and inorganic materials, as well as the methods of fabrication and analysis of operation and regions of application of modern optoelectronic devices.

Interpreting the National Electrical Code

Interpreting the National Electrical Code Book
Author : Truman Surbrook,Jonathan Althouse
Publisher : Cengage Learning
Release : 2012-08-14
ISBN : 1133708250
Language : En, Es, Fr & De

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Book Description :

Demystify and accurately interpret the National Electrical Code! Help your students master all sections of the 2011 National Electrical Code (NEC) with the accurate, thorough coverage found only in Surbrook/Althouse's INTERPRETING THE NATIONAL ELECTRICAL CODE, 9E. This easy-to-understand, trusted text explains all sections of the National Electrical Code using meaningful examples and illustrations that your students can readily understand, with valuable insights into all articles of the Code. Special sections highlight the most important changes from the last version of the Code, allowing readers to navigate easily through new 2011 NEC requirements. The authors explain each article in detail with thorough discussions, practical examples that illustrate how the Code is applied, and sample Code calculations taken from actual field applications. In addition, the authors integrate essential wiring information not directly addressed in the NEC, but extremely useful to electricians in the field. You will find all the time-saving resources you need to lead a successful course with this edition's complete Instructor Resources, including anInstructor's Manual, Computerized Test Bank, Image Gallery, and PowerPoint slides to bring your lectures to life. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

Introduction to Light Emitting Diode Technology and Applications

Introduction to Light Emitting Diode Technology and Applications Book
Author : Gilbert Held
Publisher : CRC Press
Release : 2016-04-19
ISBN : 9781420076639
Language : En, Es, Fr & De

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Book Description :

Recent improvements in LED technology have made them as ubiquitous as cell phones. In fact, LEDs light up almost all cell phones screens. The technology’s myriad applications and low energy use have made it nearly impossible to get through daily chores without coming in contact with LEDs. Probable advances include increased ability of the technology to support more efficient lighting and enhanced communications. With balanced coverage of the basics and future developments, Introduction to Light Emitting Diode Technology and Applications takes you on a tour of the LED evolution. The book begins with a brief history of the effort to enable the device that generates light through modern organic LEDs and reviews the fundamentals and principles of light prior to a detailed explanation of how LEDs generate different colors. After forming this basic foundation, the book examines the key LEDs in lighting and communications. It then discusses the latest opportunities and advancements in high brightness (HB) LED technology, solid state lighting, and handheld electronic applications. As we approach a new decade the role of LEDs is literally set to explode, with organic light emitting diodes emerging as a leading next generation technology for electronic displays and lighting. Challenges still exist, including light extraction, luminosity, and white light generation, not to mention non-technical obstacles such as IP disputes and the lack of standards. This book provides a foundation for resolving these issues and developing new applications for LEDs in the promising general illumination market.

Handbook of Power Management Circuits

Handbook of Power Management Circuits Book
Author : Haruo Kobayashi,Takashi Nabeshima
Publisher : CRC Press
Release : 2016-03-23
ISBN : 9814613169
Language : En, Es, Fr & De

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Book Description :

This comprehensive book focuses on DC–DC switching power supply circuits, which are receiving attention as a key technology in green IT, especially in the automotive and consumer electronics industries. It covers buck converters, isolated converters, PFC converters, their modeling and analysis, several control methods, passive components, and their several recent applications (on-chip power supplies, DC–DC and AC–DC converter applications, single-inductor multi-output DC–DC converters, energy harvest applications, wireless power delivery, charge pump circuits, and power amplifiers). The contents are well balanced as the authors are from both academia and industry and include pioneers and inventors of hysteretic PWM control.

Lighting Redesign for Existing Buildings

Lighting Redesign for Existing Buildings Book
Author : Craig DiLouie
Publisher : CRC Press
Release : 2020-12-18
ISBN : 1000356116
Language : En, Es, Fr & De

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Book Description :

In Lighting Redesign for Existing Buildings, veteran journalist and educator Craig DiLouie identifies opportunities to both save energy and improve lighting performance in existing buildings. The book outlines the decision-making process behind whether to retrofit or redesign an existing lighting system, describes basic lighting design techniques and how to evaluate lighting equipment, details lighting legislation and energy codes, identifies advanced lighting strategies, and describes the role planned maintenance can play in saving energy and ensuring long-term performance. Readers will gain in-depth insight into assessing and capturing their opportunities with better lighting.

Illustrated Guide to the National Electrical Code

Illustrated Guide to the National Electrical Code Book
Author : Charles R. Miller
Publisher : Cengage Learning
Release : 2020-04-02
ISBN : 035737164X
Language : En, Es, Fr & De

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Book Description :

This uniquely effective guide helps readers master the 2020 National Electrical Code, using highly detailed, technically accurate illustrations to make even the most complex aspects of the code easier to understand and apply. An experienced author, educator and master electrician, Charles Miller translates the often vague, complicated language of the 2020 NEC into clear, simple instructions accompanied by helpful visuals. Topics are organized logically and presented in a convenient, modular format for easy reference, beginning with fundamental concepts and progressing to requirements for various dwellings, from one-family homes to multi-family housing, commercial locations and special occupancies. In addition, a convenient, modular format makes it easy to reference relevant information anytime. The Eighth Edition of this trusted resource provides detailed information on key updates and additions to the 2020 NEC, so readers can confidently master current industry standards and best practices. Comprehensive coverage, an innovative learning approach perfect for today's visual learners and accurate, up-to-date information make this valuable resource indispensable for beginning and experienced electricians, engineers and other electrical professionals. Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.

Advanced Lighting Controls

Advanced Lighting Controls Book
Author : Craig DiLouie
Publisher : CRC Press
Release : 2014-07-28
ISBN : 1498710352
Language : En, Es, Fr & De

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Book Description :

Advanced Lighting Controls is edited by Craig DiLouie and written for engineers, architects, lighting designers, electrical contractors, distributors, and building owners and managers. Advanced lighting controls, indicated by research as the "next big thing," are now mandated by the ASHRAE/IES 91.1-1999 energy standard, the basis for all state energy codes in the U.S., and are becoming the norm rather than the exception in new construction. This book provides in-depth information about the major trends, technologies, codes, and design techniques shaping the use of today's lighting control systems, including dimming, automatic switching, and global as well as personal control.

Automated Lighting

Automated Lighting Book
Author : Richard Cadena
Publisher : Taylor & Francis
Release : 2017-11-22
ISBN : 1317531116
Language : En, Es, Fr & De

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Book Description :

Automated Lighting: The Art and Science of Moving and Color-Changing Lights, Third Edition (formerly Automated Lighting: The Art and Science of Moving Light) continues to be the most trusted text for working and aspiring lighting professionals. Now in its third edition, it has been fully updated to reflect the vast changes in stage and studio luminairies—including LEDs, switch-mode power supplies, optics, networking, Ethernet-based protocols like Art-Net and sACN, wireless DMX, and much more. Its written in clear, easy-to-understand language and includes enough detailed information to benefit for the most experienced technicians, programmers, and designers. Additional content and resources are provided at the author's website www.automatedlighting.pro.

Understanding LED Illumination

Understanding LED Illumination Book
Author : M. Nisa Khan
Publisher : CRC Press
Release : 2013-08-20
ISBN : 1000755754
Language : En, Es, Fr & De

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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

Fundamentals of Solid State Lighting

Fundamentals of Solid State Lighting Book
Author : Vinod Kumar Khanna
Publisher : CRC Press
Release : 2014-06-03
ISBN : 1466561122
Language : En, Es, Fr & De

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Book Description :

Compared to traditional electrical filaments, arc lamps, and fluorescent lamps, solid-state lighting offers higher efficiency, reliability, and environmentally friendly technology. LED / solid-state lighting is poised to take over conventional lighting due to cost savings—there is pretty much no debate about this. In response to the recent activity in this field, Fundamentals of Solid-State Lighting: LEDs, OLEDs, and Their Applications in Illumination and Displays covers a range of solid-state devices, technologies, and materials used for lighting and displays. It also examines auxiliary but critical requirements of efficient applications, such as modeling, thermal management, reliability, and smart lighting. The book discusses performance metrics of LEDs such as efficiency, efficacy, current–voltage characteristics, optical parameters like spectral distribution, color temperature, and beam angle before moving on to luminescence theory, injection luminescence, radiative and non-radiative recombination mechanisms, recombination rates, carrier lifetimes, and related topics. This lays down the groundwork for understanding LED operation. The book then discusses energy gaps, light emission, semiconductor material, special equipment, and laboratory facilities. It also covers production and applications of high-brightness LEDs (HBLEDs) and organic LEDs (OLEDs). LEDs represent the landmark development in lighting since the invention of electric lighting, allowing us to create unique, low-energy lighting solutions, not to talk about their minor maintenance expenses. The rapid strides of LED lighting technology over the last few years have changed the dynamics of the global lighting market, and LEDs are expected to be the mainstream light source in the near future. In a nutshell, the book traces the advances in LEDs, OLEDs, and their applications, and presents an up-to-date and analytical perspective of the scenario for audiences of different backgrounds and interests.

LED Based Visible Light Communications

LED Based Visible Light Communications Book
Author : Nan Chi
Publisher : Springer
Release : 2018-09-01
ISBN : 3662566605
Language : En, Es, Fr & De

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Book Description :

The book systematically introduces the visible light communication (VLC) technology in detail. Basic concepts and how to realize the system are both illustrated, including the transmitter, channel, and the receiver. In addition, a good many experimental results are presented to help readers further understand the VLC technologies. The upper-layer protocols of visible light communication system and the technology trends are also discussed. This book can be a good reference work for researchers, engineers, and graduate students in the fields of communications, LED, and optics.

The Fundamentals and Applications of Light Emitting Diodes

The Fundamentals and Applications of Light Emitting Diodes Book
Author : Sanjay J. Dhoble,Govind B. Nair
Publisher : Woodhead Publishing
Release : 2020-07-09
ISBN : 0128231610
Language : En, Es, Fr & De

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Book Description :

The Fundamentals and Applications of Light-Emitting Diodes: The Revolution in the Lighting Industry examines the evolution of LEDs, including a review of the luminescence process and background on solid state lighting. The book emphasizes phosphor-converted LEDs that are based on inorganic phosphors but explores different types of LEDs based on inorganic, organic, quantum dots, perovskite-structured materials, and biomaterials. A detailed description is included about the diverse applications of LEDs in fields such as lighting, displays, horticulture, biomedicine, and digital communication, as well as challenges that must be solved before using LEDs in commercial applications. Traditional light sources are fast being replaced by light-emitting diodes (LEDs). The fourth generation of lighting is completely dominated by LED luminaires. Apart from lighting, LEDs have extended their hold on other fields, such as digital communications, horticulture, medicine, space research, art and culture, display devices, and entertainment. The technological promises offered by LEDs have elevated them as front-runners in the lighting industry. Presents a concise overview of different types of light-emitting diodes (LEDs) based on inorganic phosphors, organic materials, quantum dots, perovskite-structured materials, and biomaterials Includes a discussion of current and emerging applications in lighting, communications, horticulture, and medical fields Addresses fundamentals, luminescence mechanisms, and key optical materials, including synthesis methods