Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.
上传时间： 2013-11-16
上传用户：萍水相逢
lwIP is a small independent implementation of the TCP/IP protocol suite that has been developed by Adam Dunkels at the Computer and Networks Architectures (CNA) lab at the Swedish Institute of Computer Science (SICS).
标签： implementation independent developed protocol
上传时间： 2015-05-02
上传用户：windwolf2000
计算所汉语词法分析系统ICTCLAS介绍 词是最小的能够独立活动的有意义的语言成分。 但汉语是以字为基本的书写单位，词语之间没有明显的区分标记，因此，中文词语分析是中文信息处理的基础与关键。为此,我们中国科学院计算技术研究所在多年研究基础上，耗时一年研制出了汉语词法分析系统ICTCLAS(Institute of Computing Technology, Chinese Lexical Analysis System)，该系统的功能有：中文分词；词性标注；未登录词识别。分词正确率高达97%以上，未登录词识别召回率均高于90%，其中中国人名的识别召回率接近98%处理速度为31.5Kbytes/s。ICTCLAS的特色还在于：可以根据需要输出多个高概率结果，有多种输出格式，支持北大词性标注集，973专家组给出的词性标注集合。该系统得到了专家的好评，并有多篇论文在国内外发表。 计算所汉语词法分析系统ICTCLAS同时还提供一套完整的动态连接库ICTCLAS.dll和相应的概率词典,开发者可以完全忽略汉语词法分析，直接在自己的系统中调用ICTCLAS，ICTCLAS可以根据需要输出多个高概率的结果，输出格式也可以定制，开发者在分词和词性标注的基础上继续上层开发。
上传时间： 2014-01-02
上传用户：15736969615
wcdma的多径环境下的上下行仿真，EITS标准，written by The Mobile and Portable Radio Research Group The Bradley rtment of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg, Virginia
上传时间： 2015-05-13
上传用户：225588
gprs协议栈代码.所谓协议栈就是对信息进行多次封装和解封的过程，以便能够在不同的实体间传送信息。本源代码来自Indian Institute of Technology
上传时间： 2013-12-25
上传用户：Thuan
Delphi6.0函数大全，Delphi程序员的至爱。∷图书简介∷ 电子图书名:Delphi6函数大全 Delphi6函数大全（1） <> 首部 function AnsiResemblesText(const AText, AOther: string): Boolean $[StrUtils.pas功能 返回两个字符串是否相似说明 ANSI(American National Standards Institute)美国国家标准协会 不区分大小写参考 function StrUtils.SoundexProc var StrUtils.AnsiResemblesProc例子 CheckBox1.Checked := AnsiResemblesText(Edit1.Text, Edit2.Text)
上传时间： 2016-01-25
上传用户：mikesering
UNDERSTANDING THE NEW U.S. NATIONAL SPACE POLICY，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA
标签： U.S. UNDERSTANDING NATIONAL POLICY
上传时间： 2014-12-20
上传用户：虫虫虫虫虫虫
THE UNITED STATES AND HUMAN SPACE EXPLORATION，John M. Logsdon Director, Space Policy Institute Elliott School of International Affairs The George Washington University Washington, DC, USA 在北大的讲座资料
标签： EXPLORATION STATES UNITED HUMAN
上传时间： 2016-03-05
上传用户：zycidjl
【下载说明】 这里提供给大家的是《Embedded Linux: Hardware, Software, and Interfacing》（嵌入式 Linux---硬件、软件与接口）一书的英文原版CHM格式下载。 【作者简介】 Craig Hollabaugh has been fascinated by electronics since he bought an AM radio in elementary school. He was first exposed to Unix during a cross-country talk session in 1985. Later, he administered networked Sun and DEC workstations while pursuing a doctoral degree in electrical engineering at Georgia Institute of Technology. 【内容提要】 本书通过一个冬季旅游胜地自动化管理项目实例，从软件、硬件和接口的观点介绍嵌入式Linux。引入项目需求后，作者讲述了开发环境的建立，接着用一系列软硬件接口实例展示了如何使用异步串行通信、PC并口、USB、内存I/O、同步串行通信以及中断，等等。最后介绍了将前面所有的工作有机地组织在一起的系统集成过程。本书以实际应用为导向，书中整个项目的实施过程和软硬件接口实例都具实践指导意义。
标签： Linux Interfacing Embedded Hardware
上传时间： 2014-01-22
上传用户：shus521
算法导论英文版 This book is one of a series of texts written by faculty of the Electrical Engineering and Computer Science Department at the Massachusetts Institute of Technology. I
标签： Engineering Electrical of faculty
上传时间： 2016-04-06
上传用户：123456wh
