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Getting the Most Out of Vacuum Tubes

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The purpose of this book is not to add another volume to the many excellent ones available on what makes the vacuum tube work. Rather, it is intended to shed light on the almost completely neglected subject of why these versatile devices sometimes do not work.

Informed scientists and engineers have frequently stated that the life of a vacuum tube in normal service should exceed 5,000 or even 10,000 hours. The fact that some of them do not last this long is well known. The question then is, "Why do they so often give less than their predicted or possible potential?"

J. M. Bridges, Director of Electronics, Office of the Assistant Secretary of Defense, speaking before the RETMA (now EIA) "Symposium on Reliable Applications of Vacuum Tubes" at the University of Pennsylvania in May 1956, said: "It has been demonstrated by service tests that the average number of tube failures per operating hour in two equipments of equal complexity, having approximately the same tube complement, can differ by as much as a factor of ten, due entirely to differences in the thoroughness and completeness of engineering design."
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Citrix Access Suite 4 for Windows Server 2003: The Official Guide, Third Edition
Citrix Access Suite 4 for Windows Server 2003: The Official Guide, Third Edition
Build, secure, scale, and maintain Citrix on Windows

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Create massive terrains and export them to the most popular game engines

Overview

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In Detail

Grome...


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...
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About This Book

  • Interface with cryptographic hardware to add security to your embedded project, securing you from external threats.
  • ...
Learn Adobe Illustrator CC for Graphic Design and Illustration: Adobe Certified Associate Exam Preparation (Adobe Certified Associate (ACA))
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This study guide uses text integrated with video to help you gain real-world skills that will get you started in your career in graphics, design, or illustration, and lays the foundation for taking the Illustrator ACA exam. A mix of project-based lessons, practical videos, and regular assessments throughout prepares you...

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