Download or read book Electric Contacts written by Ragnar Holm and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a completely revised and rewritten edition of "Electric Contacts Handbook" published in 1958. A large number of new in vestigations are considered, and many of the basic theories are revised in detail and even in general. The body of information had to be limited as it was not advisable to increase the volume of the book. In particular, no attempt was made to cover all of the practical applications. They appear as examples following concentrated explanations of basic phenomena. As in several branches of technology, the solutions of problems ari sing in the field of electric contacts involve insight into various disci plines of physics. It is feit that reviews of some of those topics, especi ally adapted to electric contact phenomena, are welcome to many readers. For example, chapters have been devoted to the structure of carbon, the band theory of electric conduction in solids, certain pro blems in statistics, and the theory of the electric arc. As regards arc problems, new ideas have been introduced. In order to make the main text less cumbersome, such reviews are presented as appendices. Throughout this edition, the mksa-unit system is used in accord with the latest recommendation for standardization of units in scientific and technical writings. The chapter "History of Early Investigations on Contacts" forming Part IV in the preceding edition of 1958 has not been repeated in this book.
Download or read book The Physics of Electrical Contacts written by F (Frank) 1907- Llewellyn-Jones and published by Hassell Street Press. This book was released on 2021-09-09 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book The Physics Of Electrical Contacts written by J.F. Slewellyn and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics of Electrical Contacts written by Frank Llewellyn-Jones and published by . This book was released on 1957 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical Contacts an Introduction to Their Physics and Applications written by Institute of Electrical and Electronics Engineers, Inc. Staff and published by . This book was released on 2001-01 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Change of Resistance of Poor Electrical Contacts written by Edson Ray Wolcott and published by . This book was released on 1900 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical Contacts written by Paul G. Slade and published by CRC Press. This book was released on 2017-12-19 with total page 1314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the theory, application, and testing of contact materials, Electrical Contacts: Principles and Applications, Second Edition introduces a thorough discussion on making electric contact and contact interface conduction; presents a general outline of, and measurement techniques for, important corrosion mechanisms; considers the results of contact wear when plug-in connections are made and broken; investigates the effect of thin noble metal plating on electronic connections; and relates crucial considerations for making high- and low-power contact joints. It examines contact use in switching devices, including the interruption of AC and DC circuits with currents in the range 10mA to 100kA and circuits up to 1000V, and describes arc formation between open contacts and between opening contacts. Arcing effects on contacts such as erosion, welding, and contamination are also addressed. Containing nearly 3,000 references, tables, equations, figures, drawings, and photographs, the book provides practical examples encompassing everything from electronic circuits to high power circuits, or microamperes to mega amperes. The new edition: Reflects the latest advances in electrical contact science and technology Examines current research on contact corrosion, materials, and switching Includes updates and revisions in each chapter, as well as up-to-date references and new figures and examples throughout Delivers three new chapters on the effects of dust contamination, electronic sensing for switching systems, and contact phenomena for micro-electronic systems (MEMS) applications With contributions from recognized experts in the field, Electrical Contacts: Principles and Applications, Second Edition assists practicing scientists and engineers in the prevention of costly system failures, as well as offers a comprehensive introduction to the subject for technology graduate students, by expanding their knowledge of electrical contact phenomena.
Download or read book Electrical Contacts written by Milenko Braunovic and published by CRC Press. This book was released on 2017-12-19 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various factors affect the performance of electrical contacts, including tribological, mechanical, electrical, and materials aspects. Although these behaviors have been studied for many years, they are not widely used or understood in practice. Combining approaches used across the globe, Electrical Contacts: Fundamentals, Applications, and Technology integrates advances in research and development in the tribological, material, and analytical aspects of electrical contacts with new data on electrical current transfer at the micro- and nanoscales. Taking an application-oriented approach, the authors illustrate how material characteristics, tribological behavior, and loading impact the degradation of contacts, formation of intermetallics, and overall reliability and performance. Coverage is divided broadly into three sections, with the first focused on mechanics, tribology, materials, current and heat transfer, and basic reliability issues of electrical contacts. The next section explores applications, such as power connections, electronic connections, and sliding contacts, while the final section presents the diagnostic and monitoring techniques used to investigate and measure phenomena occurring at electrical contact interfaces. Numerous references to current literature reflect the fact that this book is the most comprehensive survey in the field. Explore an impressive collection of data, theory, and practical applications in Electrical Contacts: Fundamentals, Applications, and Technology, a critical tool for anyone investigating or designing electrical equipment with improved performance and reliability in mind.
Download or read book Electrical Contacts written by Paul G. Slade and published by CRC Press. This book was released on 1999-03-31 with total page 1116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the choice, attachment, and testing of contact materials, Electrical Contacts introduces a thorough discussion on making electric contact and contact interface conduction, presents a general outline of, and measurement techniques for, important corrosion mechanisms, discusses the results of contact wear when plug-in connections are made and broken, investigates the effect of thin noble metal plating on electronic connections, relates crucial considerations for making high- and low-power contact joints, details arcing effects on contacts including contact erosion, welding, and contamination, and contains nearly 2800 references, tables, equations, drawings, and photographs.
Download or read book On The Change Of Resistance Of Poor Electrical Contacts written by Edson Ray Wolcott and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Surface Physics and Chemistry of Electrical Contact Phenomena written by Richard W. Vook and published by . This book was released on 1982 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotating electrical contacts have been characterized with respect to friction, wear electrical contact resistance, current carrying capacity, and the elemental chemical composition of the surfaces of the slip ring, brush wire ends, and wear particles. Previous work in which both the slip ring and the brush wire were made of Cu was extended to Ag wire brushes running on a Cu slip ring. The transfer of metal from brush to slip ring and vice versa as well as to the wear particles was studied for contacts lubricated by 1 atm of humidified CO2 as a function of current. The results are embodied in 6 papers attached to this report. The most interesting results were the observation that wear occurred chiefly on the harder Cu component and that the 'molecular ball bearing' hypothesis for lubrication by H2O-CO2 molecules could be applied to both Cu-Cu and Ag-Cu sliding contacts. (Author).
Download or read book The Vacuum Interrupter written by Paul G. Slade and published by CRC Press. This book was released on 2020-11-29 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: Title: The Vacuum Interrupter: Theory, Design, and ApplicationShelving guide: Electrical Engineering Dr. Paul Slade draws from his nearly six decades of active experience to develop this second edition of The Vacuum Interrupter: Theory, Design, and Application. This book begins by discussing the design requirements for high voltage vacuum interrupters and then the contact requirements to interrupt the vacuum arc. It then continues by describing the various applications in which the vacuum interrupter is generally utilized. Part 1 of this book begins with a detailed review of the vacuum breakdown process. It continues by covering the steps necessary for the design and the manufacture of a successful vacuum interrupter. The vacuum arc is then discussed, including how it is affected as a function of current. An overview of the development and use of practical contact materials, along with their advantages and disadvantages, follows. Contact designs that are introduced to control the high current vacuum arc are also analyzed. Part 2, on application, begins with a discussion of the arc interruption process for low current and high current vacuum arcs. It examines the voltage escalation phenomenon that can occur when interrupting inductive circuits. The occurrence of contact welding for closed contacts subjected to the passage of high currents, and for contacts when closing on high currents, is explored. The general requirements for the successful manufacture and testing of vacuum circuit breakers is then presented. The general application of vacuum interrupters to switch load currents, especially when applied to capacitor circuits, is also given. The interruption of high short circuit currents is presented along with the expected performance of the two major contact designs. Owing to the ever-increasing need for environmentally friendly circuit protection devices, the development and application of the vacuum interrupter will only increase in the future. At present the vacuum circuit breaker is the technology of choice for distribution circuits (5kV to 40.5kV). It is increasingly being applied to transmission circuits (72.5kV to 242kV). In the future, its application for protecting high voltage DC networks is assured. Audience This is a practical source book for engineers and scientists interested in studying the development and application of the vacuum interrupter Research scientists in industry and universities Graduate students beginning their study of vacuum interrupter phenomena Design engineers applying vacuum interrupters in vacuum switches, vacuum contactors, vacuum circuit breakers, and vacuum contactors It provides a unique and comprehensive review of all aspects of vacuum interrupter technology for those new to the subject and for those who wish to obtain a deeper understanding of its science and application Scientists and engineers, who are beginning their research into vacuum breakdown and aspects of the vacuum arc, will find the extensive bibliography and phenomenological descriptions to be a useful introduction
Download or read book Atlas of Point Contact Spectra of Electron Phonon Interactions in Metals written by A.V. Khotkevich and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characteristics of electrical contacts have long attracted the attention of researchers since these contacts are used in every electrical and electronic device. Earlier studies generally considered electrical contacts of large dimensions, having regions of current concentration with diameters substantially larger than the characteristic dimensions of the material: the interatomic distance, the mean free path for electrons, the coherence length in the superconducting state, etc. [110]. The development of microelectronics presented to scientists and engineers the task of studying the characteristics of electrical contacts with ultra-small dimensions. Characteristics of point contacts such as mechanical stability under continuous current loads, the magnitudes of electrical fluctuations, inherent sensitivity in radio devices and nonlinear characteristics in connection with electromagnetic radiation can not be understood and altered in the required way without knowledge of the physical processes occurring in contacts. Until recently it was thought that the electrical conductivity of contacts with direct conductance (without tunneling or semiconducting barriers) obeyed Ohm's law. Nonlinearities of the current-voltage characteristics were explained by joule heating of the metal in the region of the contact. However, studies of the current-voltage characteristics of metallic point contacts at low (liquid helium) temperatures [142] showed that heating effects were negligible in many cases and the nonlinear characteristics under these conditions were observed to take the form of the energy dependent probability of inelastic electron scattering, induced by various mechanisms.
Download or read book Bibliography and Abstracts on Electrical Contacts written by American Society for Testing Materials. Committee B-4 on Electrical Heating, Resistance, and Related Alloys and published by . This book was released on 1944 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials for Electrical and Electronic Contacts written by Dr. P. B. Joshi and published by . This book was released on 2004 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of electrical contact materials is of interdisciplinary nature, demanding knowledge of pure sciences such as physics and chemistry, and applied sciences like electrical and electronics engineering, metallurgical engineering and materials science, polymer science and engineering, ceramic science and engineering, over and above the knowledge of environmental aspects particularly when dealing with disposal of products. The aim of this book is to provide state of the art information on materials, and processing and applications of electrical and electronic contacts. The book will introduce the academic community to the subject of electrical and electronic materials. For the industrial users, it is a comprehensive source of information on manufacturing, evaluation and applications of electrical and electronic contact materials. The book would be of immense utility to scientists, engineers and technocrats engaged in the field of switchgear technology, integrated circuits and microelectronics.
Download or read book Electrical Contacts written by and published by . This book was released on 1983 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Contacts written by Heinz K. Henisch and published by Oxford University Press, USA. This book was released on 1984 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents what is currently known about the electrical properties of contacts in terms of concepts and models. It bridges the gap between the high-level abstractions of the modern theory of solids and the phenomenological treatments widely employed in device physics.
