PCB Currents PDF Download

Author: Douglas Brooks
Publisher: Pearson Education
ISBN: 0133415333
Category : Technology & Engineering
Languages : en
Pages : 342

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Book Description
Building on his widely praised seminars, Brooks explains what current is, how it flows, and how it reacts. He begins by reviewing the nature of current, and then explains current flow in basic circuits, discusses sources that supply and drive current, and addresses the unique problems associated with current on PCBs.

Author: Douglas Brooks
Publisher: Artech House
ISBN: 1630818615
Category : Technology & Engineering
Languages : en
Pages : 246

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Book Description
A very important part of printed circuit board (PCB) design involves sizing traces and vias to carry the required current. This exciting new book will explore how hot traces and vias should be and what board, circuit, design, and environmental parameters are the most important. PCB materials (copper and dielectrics) and the role they play in the heating and cooling of traces are covered. The IPC curves found in IPC 2152, the equations that fit those curves and computer simulations that fit those curves and equations are detailed. Sensitivity analyses that show what happens when environments are varied, including adjacent traces and planes, changing trace lengths, and thermal gradients are presented. Via temperatures and what determines them are explored, along with fusing issues and what happens when traces are overloaded. Voltage drops across traces and vias, the thermal effects going around right-angle corners, and frequency effects are covered. Readers learn how to measure the thermal conductivity of dielectrics and how to measure the resistivity of copper traces and why many prior attempts to do so have been doomed to failure. Industrial CT Scanning, and whether or not they might replace microsections for measuring trace parameters are also considered.

Author: Mark I. Montrose
Publisher: John Wiley & Sons
ISBN: 0471660906
Category : Science
Languages : en
Pages : 344

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Book Description
This accessible, new reference work shows how and why RF energy iscreated within a printed circuit board and the manner in whichpropagation occurs. With lucid explanations, this book enablesengineers to grasp both the fundamentals of EMC theory and signalintegrity and the mitigation process needed to prevent an EMCevent. Author Montrose also shows the relationship between time andfrequency domains to help you meet mandatory compliancerequirements placed on printed circuit boards. Using real-world examples the book features: Clear discussions, without complex mathematical analysis, offlux minimization concepts Extensive analysis of capacitor usage for variousapplications Detailed examination of components characteristics with variousgrounding methodologies, including implementation techniques An in-depth study of transmission line theory A careful look at signal integrity, crosstalk, andtermination

Author: Gurukul
Publisher: Gurukul Books & Packaging
ISBN: 9391184235
Category : Education
Languages : en
Pages : 304

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Book Description
Score and Prepare well for your 12th Class Board Examination with Gurukul’s newly introduced CBSE Chapterwise Objective MCQs Science Stream(PCB) Book for Term I Exam.This practice book Includes subject papers such as Physics, Chemistry, Biology, English, and Physical Education. How can you benefit from Gurukul CBSE Chapterwise PCB Objective MCQs for 12th Class? Our Comprehensive Handbook Includes questions segregated chapter wise which enable Class 12 CBSE students’ to concentrate properly on one chapter at a time.It is strictly based on the latest circular no. Acad 51, 53 and 55 of july, 2021 issued by the board for the Term I & II Examination for in-depth preparation. 1. Study material strictly based on the Reduced Syllabus issued by the Board in July, 2021 for Term 1 Exam 2. Focused on New Objective Paper Pattern Questions 3. Multiple Choice Questions (MCQs) based on the board's most recent typologies of the objective type questions: a. Stand-Alone MCQs b. Assertion-Reason based questions c. MCQs with a case study 4. Questions included from the official CBSE Question Bank, issued in April 2021 5. NCERT & NCERT Exemplar questions provided 6. 2000+ New Chapter-wise Questions included for practice 7. Detailed Explanations given for better understanding 8. Recent Years board objective questions

Author: Bruce R. Archambeault
Publisher: Springer Science & Business Media
ISBN: 1402071302
Category : Technology & Engineering
Languages : en
Pages : 268

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Book Description
This book emphasizes understanding basic concepts of controlling the currents on printed circuit boards (pcb's), and provides a wealth of insightful information detailing the possible sources of emissions. Numerous design strategies are presented to help readers understand how to produce, control and eliminate emission sources. Additional highlights include the following: -Information explaining how to design pcb's to pass EMC Requirements the first time! -Controlling intentional and unintentional currents at their source; -Decoupling strategies explained and myths exposed; -Proper I/O filter design and connection strategy explained; -Not simply a list of do's and don't's....but an explanation of "why" things work as they do; -"Ground is a place where potatoes and carrots grow!" -Basic shielding design considerations for PCBs included, and more. This 'hands-on' book will help designers understand "why" or "why not" to implement a specific design practice.

Author: Richard C. Li
Publisher: John Wiley & Sons
ISBN: 111830991X
Category : Technology & Engineering
Languages : en
Pages : 919

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Book Description
Summarizes the schemes and technologies in RF circuit design, describes the basic parameters of an RF system and the fundamentals of RF system design, and presents an introduction of the individual RF circuit block design. Forming the backbone of today's mobile and satellite communications networks, radio frequency (RF) components and circuits are incorporated into everything that transmits or receives a radio wave, such as mobile phones, radio, WiFi, and walkie talkies. RF Circuit Design, Second Edition immerses practicing and aspiring industry professionals in the complex world of RF design. Completely restructured and reorganized with new content, end-of-chapter exercises, illustrations, and an appendix, the book presents integral information in three complete sections: Part One explains the different methodologies between RF and digital circuit design and covers voltage and power transportation, impedance matching in narrow-band case and wide-band case, gain of a raw device, measurement, and grounding. It also goes over equipotentiality and current coupling on ground surface, as well as layout and packaging, manufacturability of product design, and radio frequency integrated circuit (RFIC). Part Two includes content on the main parameters and system analysis in RF circuit design, the fundamentals of differential pair and common-mode rejection ratio (CMRR), Balun, and system-on-a-chip (SOC). Part Three covers low-noise amplifier (LNA), power amplifier (PA), voltage-controlled oscillator (VCO), mixers, and tunable filters. RF Circuit Design, Second Edition is an ideal book for engineers and managers who work in RF circuit design and for courses in electrical or electronic engineering.

Author: Elya B. Joffe
Publisher: John Wiley & Sons
ISBN: 1119770939
Category : Technology & Engineering
Languages : en
Pages : 1220

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Book Description
GROUNDS FOR GROUNDING Gain a comprehensive understanding of all aspects of grounding theory and application in this new, expanded edition Grounding design and installation are crucial to ensure the safety and performance of any electrical or electronic system irrespective of size. Successful grounding design requires a thorough familiarity with theory combined with practical experience with real-world systems. Rarely taught in schools due to its complexity, identifying and implementing the appropriate solution to grounding problems is nevertheless a vital skill in the industrial world for any electrical engineer. In Grounds for Grounding, readers will discover a complete and thorough approach to the topic that blends theory and practice to demonstrate that a few rules apply to many applications. The book provides basic concepts of Electromagnetic Compatibility (EMC) that act as the foundation for understanding grounding theory and its applications. Each avenue of grounding is covered in its own chapter, topics from safety aspects in facilities, lightning, and NEMP to printed circuit board, cable shields, and enclosure grounding, and more. Grounds for Grounding readers will also find: Revised and updated information presented in every chapter New chapters on grounding for generators, uninterruptible power sources (UPSs) New appendices including a grounding design checklist, grounding documentation content, and grounding verification procedures Grounds for Grounding is a useful reference for engineers in circuit design, equipment, and systems, as well as power engineers, platform, and facility designers.

Author: Walt Boyes
Publisher: Elsevier
ISBN: 0080478530
Category : Technology & Engineering
Languages : en
Pages : 1086

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Book Description
Instrumentation is not a clearly defined subject, having a 'fuzzy' boundary with a number of other disciplines. Often categorized as either 'techniques' or 'applications' this book addresses the various applications that may be needed with reference to the practical techniques that are available for the instrumentation or measurement of a specific physical quantity or quality. This makes it of direct interest to anyone working in the process, control and instrumentation fields where these measurements are essential. * Comprehensive and authoritative collection of technical information* Written by a collection of specialist contributors* Updated to include chapters on the fieldbus standards, reliability, EMC, 'virtual instrumentation', fibre optics, smart and intelligent transmitters, analyzers, level and flow meters, and many more

Author: Edward Ramsden
Publisher: Elsevier
ISBN: 0080523749
Category : Computers
Languages : en
Pages : 265

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Book Description
Without sensors most electronic applications would not exist—sensors perform a vital function, namely providing an interface to the real world. Hall effect sensors, based on a magnetic phenomena, are one of the most commonly used sensing technologies today. In the 1970s it became possible to build Hall effect sensors on integrated circuits with onboard signal processing circuitry, vastly reducing the cost and enabling widespread practical use. One of the first major applications was in computer keyboards, replacing mechanical contacts. Hundreds of millions of these devices are now manufactured each year for use in a great variety of applications, including automobiles, computers, industrial control systems, cell phones, and many others. The importance of these sensors, however, contrasts with the limited information available. Many recent advances in miniaturization, smart sensor configurations, and networkable sensor technology have led to design changes and a need for reliable information. Most of the technical information on Hall effect sensors is supplied by sensor manufacturers and is slanted toward a particular product line. System design and control engineers need an independent, readable source of practical design information and technical details that is not product- or manufacturer-specific and that shows how Hall effect sensors work, how to interface to them, and how to apply them in a variety of uses. This book covers:•the physics behind Hall effect sensors•Hall effect transducers•transducer interfacing•integrated Hall effect sensors and how to interface to them•sensing techniques using Hall effect sensors•application-specific sensor ICs•relevant development and design toolsThis second edition is expanded and updated to reflect the latest advances in Hall effect devices and applications! Information about various sensor technologies is scarce, scattered and hard to locate. Most of it is either too theoretical for working engineers, or is manufacturer literature that can't be entirely trusted. Engineers and engineering managers need a comprehensive, up-to-date, and accurate reference to use when scoping out their designs incorporating Hall effect sensors.* A comprehensive, up-to-date reference to use when crafting all kinds of designs with Hall effect sensors*Replaces other information about sensors that is too theoretical, too biased toward one particular manufacturer, or too difficult to locate*Highly respected and influential author in the burgeoning sensors community

Author: Douglas Brooks
Publisher: Prentice Hall Professional
ISBN: 9780131418844
Category : Computers
Languages : en
Pages : 418

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Book Description
Complicated concepts explained succinctly and in laymen's terms to both experienced and novice PCB designers. Numerous examples allow reader to visualize how high-end software simulators see various types of SI problems and then their solutions. Author is a frequent and recognized seminar leader in the industry.