Pcb Currents Enhanced Edition

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PCB Currents, Enhanced Edition

Author : Douglas Brooks
Publisher : Prentice Hall
Page : 128 pages
File Size : 40,5 Mb
Release : 2013-07-22
Category : Technology & Engineering
ISBN : 9780133415438

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PCB Currents, Enhanced Edition by Douglas Brooks Pdf

This is the enhanced eBook version of the printed book. It contains 1 hour and 48 minutes of video conversations and circuit animations from the industry's leading circuit design engineer, Doug Brooks. Today, PCB designers must deal with issues such as crosstalk and EMI–issues that were once associated only with components. This requires electronics knowledge that many PCB designers never gain through formal training. In PCB Currents, renowned PCB designer Douglas Brooks teaches these essentials descriptively, in plain English, with as little reliance on mathematics as possible. 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. Brooks concludes by thoroughly illuminating signal integrity issues caused by current flow. He offers practical design solutions for each common type of problem, as well as for complex challenges involving very high frequency harmonics and very short wavelengths. The text is written to be accessible and valuable for PCB designers at all levels of experience, whether they have engineering training or not. Finally, in this Enhanced eBook Edition, some videos and animations have been incorporated as an additional benefit. They fall into four categories. First, there is an introductory video at the beginning of the Preface. It is intended to help put the entire book into a perspective. Second, each section has an introductory video that outlines what is contained within that section and, in most cases, the most important points to be discovered in that section. Third, each chapter has its own, short introduction, again highlighting the most important points within the chapter. Finally, in Chapters 17 and 18, we have some animation videos to help explain some dynamic interactions. It is hard to envision what is happening when a signal reflects off the far end of a trace, or when a signal couples into an adjacent trace (crosstalk) as it travels along using just static figures. But an animation video makes these phenomena much easier to understand. These videos are an important benefit available to you, the ebook reader, and one that cannot be incorporated into a print edition.

PCB Currents

Author : Douglas Brooks
Publisher : Prentice Hall
Page : 553 pages
File Size : 41,6 Mb
Release : 2013-06-13
Category : Technology & Engineering
ISBN : 9780133415353

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PCB Currents by Douglas Brooks Pdf

The Plain-English Guide to Electronics and Current Flow for Every PCB Designer Today, PCB designers must deal with issues such as crosstalk and EMI-–issues that were once associated only with components. This requires electronics knowledge that many PCB designers never gain through formal training. In PCB Currents, renowned PCB designer Douglas Brooks teaches these essentials descriptively, in plain English, with as little reliance on mathematics as possible. 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. Brooks concludes by thoroughly illuminating signal integrity issues caused by current flow. He offers practical design solutions for each common type of problem, as well as for complex challenges involving very high frequency harmonics and very short wavelengths. Coverage includes • Current: its fundamental nature, basic definitions, and key concepts • Five fundamental laws of current, including Kirchoff’s law and Ohm’s law • Basic circuit concepts: resistive circuits, reactive circuits, and impedance • Voltage and current sources: Where electrons come from and why they move • Current-related PCB issues: temperature, transmission lines, reflections, coupled currents, power distribution, skin effect, dielectric losses, and vias • Solutions for signal integrity issues caused by current flow, from on-board inductance and apparent resistance changes to more complex problems The text is written to be accessible and valuable for PCB designers at all levels of experience, whether they have engineering training or not.

PCB Design Guide to Via and Trace Currents and Temperatures

Author : Douglas Brooks,Johannes Adam
Publisher : Artech House
Page : 246 pages
File Size : 43,5 Mb
Release : 2021-02-28
Category : Technology & Engineering
ISBN : 9781630818616

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PCB Design Guide to Via and Trace Currents and Temperatures by Douglas Brooks,Johannes Adam Pdf

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.

Pcb Trace and Via Currents and Temperatures

Author : Douglas Brooks
Publisher : Createspace Independent Publishing Platform
Page : 202 pages
File Size : 42,9 Mb
Release : 2016-03-04
Category : Electronic
ISBN : 1530389437

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Pcb Trace and Via Currents and Temperatures by Douglas Brooks Pdf

Finally! For the first time, here is a complete, thorough analysis of the relationships between PCB trace (and via) currents and trace temperatures. All in one place! Brooks has been looking at these relationships since the mid '90s. And he has assembled 20-plus years of knowledge into these pages. Starting with a historical background, this book covers: (a) PCB materials (copper and dielectrics) and the role they play in the heating and cooling of traces; (b) The IPC curves found in IPC 2152; (c) Equations that fit those curves; (d) Computer simulations that fit those curves and equations; (e) Sensitivity analyses showing what happens when we vary the environment (adjacent traces and planes, changing trace lengths, thermal gradients, etc.); (f) Via temperatures and what determines them; (g) Via current densities; (h) Fusing issues, what happens when traces are overloaded, and (g) a chapter showing how unevenly traces heat, even at low temperatures. There are supplemental chapters or appendices on measuring the thermal conductivity of dielectrics and measuring the resistivity of copper traces (and why many prior attempts have been doomed to failure.) And there is even a chapter on whether Industrial CT Scanning might replace microsections for measuring trace parameters. Never before has such a thorough compendium been available, especially so conveniently.

Electromagnetic Compatibility

Author : David Weston
Publisher : CRC Press
Page : 857 pages
File Size : 54,8 Mb
Release : 2017-12-19
Category : Technology & Engineering
ISBN : 9781482277340

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Electromagnetic Compatibility by David Weston Pdf

This totally revised and expanded reference/text provides comprehensive, single-source coverage of the design, problem solving, and specifications of electromagnetic compatibility (EMC) into electrical equipment/systems-including new information on basic theories, applications, evaluations, prediction techniques, and practical diagnostic options for preventing EMI through cost-effective solutions. Offers the most recent guidelines, safety limits, and standards for human exposure to electromagnetic fields! Containing updated data on EMI diagnostic verification measurements, as well as over 900 drawings, photographs, tables, and equations-500 more than the previous edition-Electromagnetic Compatibility: Principles and Applications, Second Edition:

Electromagnetic Compatibility

Author : David A. Weston
Publisher : CRC Press
Page : 1311 pages
File Size : 44,9 Mb
Release : 2016-11-03
Category : Computers
ISBN : 9781315354705

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Electromagnetic Compatibility by David A. Weston Pdf

Revised, updated, and expanded, Electromagnetic Compatibility: Methods, Analysis, Circuits, and Measurement, Third Edition provides comprehensive practical coverage of the design, problem solving, and testing of electromagnetic compatibility (EMC) in electrical and electronic equipment and systems. This new edition provides novel information on theory, applications, evaluations, electromagnetic computational programs, and prediction techniques available. With sixty-nine schematics providing examples for circuit level electromagnetic interference (EMI) hardening and cost effective EMI problem solving, this book also includes 1130 illustrations and tables. Including extensive data on components and their correct implementation, the myths, misapplication, misconceptions, and fallacies that are common when discussing EMC/EMI will also be addressed and corrected.

Current Practice of Gas Chromatography-Mass Spectrometry

Author : Wilfried M.A. Niessen
Publisher : CRC Press
Page : 530 pages
File Size : 48,5 Mb
Release : 2001-04-04
Category : Science
ISBN : 1420029517

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Current Practice of Gas Chromatography-Mass Spectrometry by Wilfried M.A. Niessen Pdf

This volume details the principles and instrumentation of gas chromatography-mass spectrometry (CG-MS), and outlines industrial, environmental, pharmaceutical, clinical, toxicological, forensic and food-related applications, revealing findings from the laboratories of 40 contributing scientists around the world using GC-MS in practice. It describes upstream and downstream applications of GC-MS in the petroleum industry and identifies chlorinated compounds in the environment with quadrupole ion-trap technology and high-resolution sector instruments.

Lumped Elements for RF and Microwave Circuits, Second Edition

Author : Inder J. Bahl
Publisher : Artech House
Page : 593 pages
File Size : 40,7 Mb
Release : 2022-12-31
Category : Technology & Engineering
ISBN : 9781630819330

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Lumped Elements for RF and Microwave Circuits, Second Edition by Inder J. Bahl Pdf

Fully updated and including entirely new chapters, this Second Edition provides in-depth coverage of the different types of RF and microwave circuit elements, including inductors, capacitors, resistors, transformers, via holes, airbridges, and crossovers. Featuring extensive formulas for lumped elements, design trade-offs, and an updated and current list of references, the book helps you understand the value and usefulness of lumped elements in the design of RF, microwave and millimeter wave components and circuits. You’ll find a balanced treatment between standalone lumped elements and their circuits using MICs, MMICs and RFICs technologies. You’ll also find detailed information on a broader range RFICs that was not available when the popular first edition was published. The book captures – in one consolidated volume -- the fundamentals, equations, modeling, examples, references and overall procedures to design, test and produce microwave components that are indispensable in industry and academia today. With its superb organization and expanded coverage of the subject, this is a must-have, go-to resource for practicing engineers and researchers in industry, government and university and microwave engineers working in the antenna area. Students will also find it a useful reference with its clear explanations, many examples and practical modeling guidelines.

PEM Fuel Cells

Author : Gurbinder Kaur
Publisher : Elsevier
Page : 584 pages
File Size : 42,5 Mb
Release : 2021-11-16
Category : Science
ISBN : 9780128237090

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PEM Fuel Cells by Gurbinder Kaur Pdf

PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides a comprehensive introduction to the principles of PEM fuel cell, their working condition and application, and the latest breakthroughs and challenges for fuel cell technology. Each chapter follows a systematic and consistent structure with clear illustrations and diagrams for easy understanding. The opening chapters address the basics of PEM technology; stacking and membrane electrode assembly for PEM, degradation mechanisms of electrocatalysts, platinum dissolution and redeposition, carbon-support corrosion, bipolar plates and carbon nanotubes for the PEM, and gas diffusion layers. Thermodynamics, operating conditions, and electrochemistry address fuel cell efficiency and the fundamental workings of the PEM. Instruments and techniques for testing and diagnosis are then presented alongside practical tests. Dedicated chapters explain how to use MATLAB and COMSOL to conduct simulation and modeling of catalysts, gas diffusion layers, assembly, and membrane. Degradation and failure modes are discussed in detail, providing strategies and protocols for mitigation. High-temperature PEMs are also examined, as are the fundamentals of EIS. Critically, the environmental impact and life cycle of the production and storage of hydrogen are addressed, as are the risk and durability issues of PEMFC technology. Dedicated chapters are presented on the economics and commercialization of PEMFCs, including discussion of installation costs, initial capital costs, and the regulatory frameworks; apart from this, there is a separate chapter on their application to the automotive industry. Finally, future challenges and applications are considered. PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides an in-depth and comprehensive reference on every aspect of PEM fuel cells fundamentals, ideal for researchers, graduates, and students. Presents the fundamentals of PEM fuel cell technology, electrolytes, membranes, modeling, conductivity, recent trends, and future applications Addresses commercialization, public policy, and the environmental impacts of PEMFC in dedicated chapters Presents state-of-the-art PEMFC research alongside the underlying concepts

Title 40 Protection of Environment Parts 700 to 789 (Revised as of July 1, 2013)

Author : Office of The Federal Register, Enhanced by IntraWEB, LLC
Publisher : IntraWEB, LLC and Claitor's Law Publishing
Page : 1147 pages
File Size : 53,7 Mb
Release : 2014-07-01
Category : Law
ISBN : 9780160920202

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Title 40 Protection of Environment Parts 700 to 789 (Revised as of July 1, 2013) by Office of The Federal Register, Enhanced by IntraWEB, LLC Pdf

40 CFR Protection of Environment

Federal Register

Author : Anonim
Publisher : Unknown
Page : 1104 pages
File Size : 53,9 Mb
Release : 1985-07-15
Category : Administrative law
ISBN : UIUC:30112058908564

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Federal Register by Anonim Pdf

Pcb Trace and Via Currents and Temperatures

Author : Douglas G Brooks Phd
Publisher : Unknown
Page : 128 pages
File Size : 49,8 Mb
Release : 2017-02-09
Category : Electronic
ISBN : 1541213521

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Pcb Trace and Via Currents and Temperatures by Douglas G Brooks Phd Pdf

Brooks has been looking at these relationships since the mid '90s. And he has assembled 20-plus years of knowledge into these pages. Starting with a historical background, this book covers: (a) PCB materials (copper and dielectrics) and the role they play in the heating and cooling of traces; (b) The IPC curves found in IPC 2152; (c) Equations that fit those curves; (d) Computer simulations that fit those curves and equations; (e) Sensitivity analyses showing what happens when we vary the environment (adjacent traces and planes, changing trace lengths, thermal gradients, etc.); (f) Via temperatures and what determines them; (g) Via current densities; and (h) Fusing issues, what happens when traces are overloaded. There are supplemental chapters or appendices on measuring the thermal conductivity of dielectrics and measuring the resistivity of copper traces (and why many prior attempts to do so have been doomed to failure.) And there is even a chapter on whether Industrial CT Scanning might replace microsections for measuring trace parameters. This Second Edition adds two new chapters (on AC currents and on thermal gradients around right-angle corners), a greatly expanded Chapter 6 (Thermal Simulations), and other additional information throughout the text.

EMC and the Printed Circuit Board

Author : Mark I. Montrose
Publisher : John Wiley & Sons
Page : 344 pages
File Size : 50,8 Mb
Release : 2004-04-05
Category : Science
ISBN : 9780471660903

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EMC and the Printed Circuit Board by Mark I. Montrose Pdf

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

Signal Integrity Issues and Printed Circuit Board Design

Author : Douglas Brooks
Publisher : Prentice Hall Professional
Page : 418 pages
File Size : 52,6 Mb
Release : 2003
Category : Computers
ISBN : 013141884X

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Signal Integrity Issues and Printed Circuit Board Design by Douglas Brooks Pdf

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.

NIOSH Current Intelligence Bulletin

Author : Anonim
Publisher : Unknown
Page : 346 pages
File Size : 47,7 Mb
Release : 1986
Category : Electronic
ISBN : UOM:39015012720689

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NIOSH Current Intelligence Bulletin by Anonim Pdf