PCB Currents : How They Flow, How They React (美國原版)

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.

「對於每位 PCB 設計師的電子學和電流流動的平易指南」

如今，PCB 設計師必須處理諸如串擾和電磁干擾等問題，而這些問題曾經只與元件相關。這需要電子學知識，而許多 PCB 設計師在正式培訓中並未獲得。在《PCB Currents》中，著名 PCB 設計師 Douglas Brooks 以盡可能少依賴數學的方式，用平易近人的語言描述這些基本知識。在廣受好評的研討會基礎上，Brooks 解釋了電流的本質、流動方式以及反應。他首先回顧了電流的性質，然後解釋了基本電路中的電流流動，討論了供應和驅動電流的來源，並解決了與 PCB 上的電流相關的獨特問題。Brooks 最後詳細闡明了由電流流動引起的信號完整性問題。他提供了每種常見問題的實用設計解決方案，以及涉及非常高頻諧波和非常短波長的複雜挑戰的解決方案。

內容包括：

• 電流：其基本性質、基本定義和關鍵概念

• 五個基本電流定律，包括基爾霍夫定律和歐姆定律

• 基本電路概念：電阻電路、反應電路和阻抗

• 電壓和電流源：電子來源及其運動原因

• 與電流相關的 PCB 問題：溫度、傳輸線、反射、耦合電流、電源分配、表面效應、介電損耗和通孔

• 解決由電流流動引起的信號完整性問題，從板上電感和表觀電阻變化到更複雜的問題

本書的撰寫旨在讓 PCB 設計師在各個經驗水平上都能理解並受益，無論他們是否接受過工程培訓。