The Bell System Technical Journal, 1929, Vol. 8 (Classic Reprint)
Language: English
Published by Forgotten Books, 2018
- Softcover
- New
Seller: Forgotten Books, London, United KingdomForgotten Books
AbeBooks seller since June 2, 2021
Condition: New
£ 24.21
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Print on Demand. This book explores the fundamentals of electric circuits as applied to communication, with a particular focus on the role of these principles in telephone systems. The author emphasizes the importance of understanding the general principles of direct and alternating current theory, and provides practical examples of their application to communication problems. The book also discusses transmission line theory, including the relationship between power line equations and telephone line equations, as well as the use of equivalent networks to simplify the analysis of complex circuits. By providing a clear and comprehensive overview of the subject, this book serves as a valuable resource for students, researchers, and practitioners in the fields of electrical engineering and communication. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book.…
Seller Inventory # 9780282935122_0
- Title
- The Bell System Technical Journal, 1929, Vol. 8 (Classic Reprint)
- Author
- J. J. Carty, Bancroft Gherardi
- Publisher
- Forgotten Books
- Publication year
- 2018
- Condition
- New
- Book Type
- print-on-demand item
- Binding
- Paperback
- Language
- English
- ISBN 10
- 0282935126
- ISBN 13
- 9780282935122
- Seller catalogs
- Electronics
N 1923 the mile Of standard cable was replaced in the Bell System by a new unit for expressing telephone transmission efficiencies and levels. At that time the generic term transmission unit was taken to designate this new unit, since it was considered desirable to defer the adoption Of a more distinctive name until this unit had been given further consideration by others who would have use for a unit Of this type. This new unit is defined by the statement that two amounts Of power differ by one transmission unit when they are in the ratio of 10-1, and any two amounts Of power differ by N transmission units when they are in the ratio Of In accordance with this, the number Of transmission units corresponding to the ratio of any two powers is ten times the common logarithm Of that ratio.
For a unit Of this kind, it is evidently desirable to have universal use. Accordingly, the Bell System, prior to its adoption Of the transmission unit, discussed this matter with various foreign telephone administrations, and suggested their consideration Of the use' Of the proposed transmission unit. A number of these administrations expressed a favorable attitude towards this unit.
In 1924 there was organized the International Advisory Committee on Long Distance Telephony in Europe. The purpose of this commit tee, which is composed Of representatives of the various telephone administrations of Europe, is to recommend standards and practices for the development of telephone service between the European coun tries. One Oi the early considerations of this committee was this proposal Of the universal standardization of a unit for telephone trans mission work. This brought forth a difference Of view, since some Of the countries represented on this committee wished to continue their use of a unit based on naperian or natural logarithms, for which the basic power ratio is 62. The characteristics Of the unit based on decimal logarithms and that based on natural logarithms and their relative merits were discussed in a number. Of papers which were published at that time and so need not be rehearsed here.
About the Publisher
Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Forgotten Books’ Classic Reprint Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention has been made to accurately preserve the original format of each page whilst digitally enhancing the quality of the aged text.
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Forgotten Books publishes hundreds of thousands of rare and classic books.
This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
This text has been digitally restored from a historical edition. Some errors may persist, however we consider it worth publishing due to the work's historical value.
The digital edition of all books may be viewed before purchase if you request a sample.
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