Author: Ramon M. Cerda
Publisher: Artech House
ISBN: 1608071189
Category : Technology & Engineering
Languages : en
Pages : 325
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Book Description
Quartz, unique in its chemical, electrical, mechanical, and thermal properties, is used as a frequency control element in applications where stability of frequency is an absolute necessity. Without crystal controlled transmission, radio and television would not be possible in their present form. The quartz crystals allow the individual channels in communication systems to be spaced closer together to make better use of one of most precious resources -- wireless bandwidth. This book describes the characteristics of the art of crystal oscillator design, including how to specify and select crystal oscillators. While presenting various varieties of crystal oscillators, this resource also provides you with useful MathCad and Genesys simulations.
Author: Richard J. Thompson, Jr.
Publisher: John Wiley & Sons
ISBN: 0470051280
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
Quartz crystal-a technology that changed the tide of World War II Some of the defining leaps in technology in the twentieth century occurred during the Second World War, from radar to nuclear energy. Often left out of historical discussions are quartz crystals, which proved to be just as pivotal to the Allied victory-and to post-war development-as other technologies. Quartz crystals provided the U.S. military, for the first time, with reliable communication on the front lines, and then went on to become the core of some of the most basic devices of the post-war era, from watches, clocks, and color televisions, to cell phones and computers. In Crystal Clear, Richard Thompson relates the story of the quartz crystal in World War II, from its early days as a curiosity for amateur radio enthusiasts, to its use by the United States Armed Forces. It follows the intrepid group of scientists and engineers from the Office of the Chief Signal Officer of the U.S. Army as they raced to create an effective quartz crystal unit. They had to find a reliable supply of radio-quality quartz; devise methods to reach, mine, and transport the quartz; find a way to manufacture quartz crystal oscillators rapidly; and then solve the puzzling "aging problem" that plagued the early units. Ultimately, the development of quartz oscillators became the second largest scientific undertaking in World War II after the Manhattan Project. Bringing to light a little-known aspect of World War II, Crystal Clear offers a glimpse inside one of the most significant efforts in the annals of engineering.
Author: Marvin Frerking
Publisher: Springer Science & Business Media
ISBN: 9401160562
Category : Science
Languages : en
Pages : 252
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Book Description
Crystal oscillators have been in use now for well over SO years-one of the first was built by W. G. Cady in 1921. Today, millions of them are made every year, covering a range of frequencies from a few Kilohertz to several hundred Mega hertz and a range of stabilities from a fraction of one percent to a few parts in ten to the thirteenth, with most of them, by far, still in the range of several tens of parts per million.Their major application has long been the stabilization of fre quencies in transmitters and receivers, and indeed, the utilization of the frequency spectrum would be in utter chaos, and the communication systems as we know them today unthinkable,'without crystal oscillators. With the need to accommodate ever increasing numbers of users in a limited spectrum space, this traditional application will continue to grow for the fore seeable future, and ever tighter tolerances will have to be met by an ever larger percentage of these devices.
Author: Anthony Michael Glazer
Publisher: Oxford University Press
ISBN: 0198717598
Category : Science
Languages : en
Pages : 169
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Book Description
A long history -- Symmetry -- Crystal structures -- Diffraction -- Seeing atoms -- Sources of radiation
Author: Philco Corporation. TechRep Division. Technical Publications Department
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 610
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Book Description
Author: The Surface Science Society of Japan
Publisher: Springer
ISBN: 9811061564
Category : Technology & Engineering
Languages : en
Pages : 807
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Book Description
This book concisely illustrates the techniques of major surface analysis and their applications to a few key examples. Surfaces play crucial roles in various interfacial processes, and their electronic/geometric structures rule the physical/chemical properties. In the last several decades, various techniques for surface analysis have been developed in conjunction with advances in optics, electronics, and quantum beams. This book provides a useful resource for a wide range of scientists and engineers from students to professionals in understanding the main points of each technique, such as principles, capabilities and requirements, at a glance. It is a contemporary encyclopedia for selecting the appropriate method depending on the reader's purpose.
Author: Robert J. Matthys
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 264
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Book Description
Author: United States. Navy Department
Publisher:
ISBN:
Category : Specifications
Languages : en
Pages : 504
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Book Description
Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 1186
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 520
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Book Description
