The Bell System Technical Journal, 1937, Vol. 16
The Bell System Technical Journal, 1937, Vol. 16

Author: R. W. King

Publisher: Forgotten Books

Published: 2016-10-13

Total Pages: 622

ISBN-13: 9781333935702

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Excerpt from The Bell System Technical Journal, 1937, Vol. 16: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication The coaxial cable itself has been installed between the long distance telephone buildings in New York and Philadelphia, a distance of miles. It has been equipped with repeaters, at intervals of about 10 miles, capable of handling a frequency band of about cycles. 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.

The Bell System Technical Journal, 1945, Vol. 24
The Bell System Technical Journal, 1945, Vol. 24

Author: R. W. King

Publisher: Forgotten Books

Published: 2018-10-11

Total Pages: 488

ISBN-13: 9781391985695

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Excerpt from The Bell System Technical Journal, 1945, Vol. 24: A Journal Devoted to the Scientific and Engineering Aspects of Electrical Communication T has been known for a long time that all kinds of oscillators are subject to the trouble variously referred to as intermittent oscillation, motor boating, or squegging. In conventional circuits such as the Hartley the phenomenon is most likely to be observed if the grid leak and grid condenser are abnormally large. It is found that the time constant of this combina tion must be reduced as the frequency is raised and as the Q of the resonant circuit is decreased. At frequencies above a few hundred megacycles the problem of producing a practical circuit with suitable margin of stability is quite difficult. With the advent of the oscillator having automatic output control the problem assumed a new aspect}, 2 By application of an amplified control circuit a high degree of constancy of output together with low harmonic output is obtained. Satisfactory Operation is secured, however, only when suitable attention is given to\the characteristics of the control circuit. The intentional generation of pulses by means of intermittent oscillations of relatively high frequency has been studied to some extent, and circuits of this kind are employed in some television systems. Usually the high frequency oscillation is limited to a small portion of the low-frequency cycle, the charge stored during this period being allowed to dissipate itself relatively slowly during the remainder of the cycle. 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.

Bell Telephone Magazine, 1937, Vol. 16 (Classic Reprint)
Bell Telephone Magazine, 1937, Vol. 16 (Classic Reprint)

Author: American Telephone and Telegraph Co

Publisher: Forgotten Books

Published: 2017-10-28

Total Pages: 356

ISBN-13: 9780265890912

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Excerpt from Bell Telephone Magazine, 1937, Vol. 16 If in what follows I seem to dwell largely on the Bell System and on telephony, it is partly because of this predominant posi tion of the Bell System in the whole art of electrical communi cation, and partly because the technical problems of telephony are in general more difficult than the technical problems of telegraphy and, when solved satisfactorily, carry in that solu tion generally the automatic solution of a host of telegraph problems. With this preface related to the general aspects of our sub jcet, let me now turn to a brief historical review and to some of what seem to me the more important details of the problem. 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.

BELL SYSTEM TECHNICAL JOURNAL
BELL SYSTEM TECHNICAL JOURNAL

Author: American Telephone and Telegraph Company

Publisher: Wentworth Press

Published: 2016-09-10

Total Pages: 628

ISBN-13: 9781360746449

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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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. 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. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.

Nikola Tesla’s Electricity Unplugged
Nikola Tesla’s Electricity Unplugged

Author: Tom Valone Ph.D.

Publisher: SCB Distributors

Published: 2016-04-13

Total Pages: 464

ISBN-13: 1939149673

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The immense genius of Tesla resulted from a mind that could see an invention in 3-D, from every angle, within his mind before it was easily built. Tesla’s inventions were complete down to dimensions and part sizes in his visionary process. Tesla would envision his electromagnetic devices as he stared into the sky, or into a corner of his laboratory. His inventions on rotating magnetic fields creating AC current as we know it today, have changed the world—yet most people have never heard of this great inventor Is he a suppressed inventor, as many historians contend? Many of Tesla’s concepts and inventions are still thought of as science fiction today—over 60 years later! Includes: Tesla’s fantastic vision of the future, his wireless transmission of power, Tesla’s Magnifying Transmitter, the testing and building of his towers for wireless power, tons more. The genius of Nikola Tesla is being realized by millions all over the world!

Single Channel Phase-Aware Signal Processing in Speech Communication
Single Channel Phase-Aware Signal Processing in Speech Communication

Author: Pejman Mowlaee

Publisher: John Wiley & Sons

Published: 2016-12-27

Total Pages: 253

ISBN-13: 1119238811

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An overview on the challenging new topic of phase-aware signal processing Speech communication technology is a key factor in human-machine interaction, digital hearing aids, mobile telephony, and automatic speech/speaker recognition. With the proliferation of these applications, there is a growing requirement for advanced methodologies that can push the limits of the conventional solutions relying on processing the signal magnitude spectrum. Single-Channel Phase-Aware Signal Processing in Speech Communication provides a comprehensive guide to phase signal processing and reviews the history of phase importance in the literature, basic problems in phase processing, fundamentals of phase estimation together with several applications to demonstrate the usefulness of phase processing. Key features: Analysis of recent advances demonstrating the positive impact of phase-based processing in pushing the limits of conventional methods. Offers unique coverage of the historical context, fundamentals of phase processing and provides several examples in speech communication. Provides a detailed review of many references and discusses the existing signal processing techniques required to deal with phase information in different applications involved with speech. The book supplies various examples and MATLAB® implementations delivered within the PhaseLab toolbox. Single-Channel Phase-Aware Signal Processing in Speech Communication is a valuable single-source for students, non-expert DSP engineers, academics and graduate students.

Microwave Circuit Design Using Linear and Nonlinear Techniques
Microwave Circuit Design Using Linear and Nonlinear Techniques

Author: George D. Vendelin

Publisher: John Wiley & Sons

Published: 2005-10-03

Total Pages: 1080

ISBN-13: 0471715824

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The ultimate handbook on microwave circuit design with CAD. Full of tips and insights from seasoned industry veterans, Microwave Circuit Design offers practical, proven advice on improving the design quality of microwave passive and active circuits-while cutting costs and time. Covering all levels of microwave circuit design from the elementary to the very advanced, the book systematically presents computer-aided methods for linear and nonlinear designs used in the design and manufacture of microwave amplifiers, oscillators, and mixers. Using the newest CAD tools, the book shows how to design transistor and diode circuits, and also details CAD's usefulness in microwave integrated circuit (MIC) and monolithic microwave integrated circuit (MMIC) technology. Applications of nonlinear SPICE programs, now available for microwave CAD, are described. State-of-the-art coverage includes microwave transistors (HEMTs, MODFETs, MESFETs, HBTs, and more), high-power amplifier design, oscillator design including feedback topologies, phase noise and examples, and more. The techniques presented are illustrated with several MMIC designs, including a wideband amplifier, a low-noise amplifier, and an MMIC mixer. This unique, one-stop handbook also features a major case study of an actual anticollision radar transceiver, which is compared in detail against CAD predictions; examples of actual circuit designs with photographs of completed circuits; and tables of design formulae.