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IEEE Spectrum

Volume 34 Issue 7 • July 1997

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Displaying Results 1 - 24 of 24
  • IEEE Spectrum - Front cover

    Publication Year: 1997, Page(s): c1
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  • Newslog

    Publication Year: 1997, Page(s): 1
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  • Table of contents

    Publication Year: 1997, Page(s):2 - 4
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  • Forum

    Publication Year: 1997, Page(s):6 - 8
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  • Calendar

    Publication Year: 1997, Page(s):10 - 16E4
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  • Deep blue's dad [review of "hal's legacy: 2001 computer as dream and reality" (stork, d.g.; 1997)[book review]

    Publication Year: 1997, Page(s):12 - 14
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  • Taboo or not taboo? [review of "forbidden knowledge: from prometheus to pornography" (shattuck, r.; 1996) [book review]

    Publication Year: 1997, Page(s):14 - 15
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  • Recent books

    Publication Year: 1997, Page(s):15 - 16T10
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  • Virtual machines jockey for position

    Publication Year: 1997, Page(s): 16
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  • Washington watch

    Publication Year: 1997, Page(s):16T6 - 16T8
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  • Any time, anywhere [Reflections]

    Publication Year: 1997, Page(s): 17
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  • Super power(Special Report)

    Publication Year: 1997, Page(s):18 - 19
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (65 KB)

    The application of superconductors to electric power systems has been pursued for more than 30 years. This persistence has good reason. In principle, the materials can be used to build more compact and more efficient devices, and to make energy transportation and storage systems more efficient—and to do so in a fashion that is more friendly to the environment. View full abstract»

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  • Flywheels on a roll

    Publication Year: 1997, Page(s):20 - 25
    Cited by:  Papers (44)  |  Patents (1)
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    Superconducting bearings promise to reduce friction by up to two orders of magnitude, auguring flywheels in the 10-kWh class. The author discusses the principles of stable magnetic levitation of permanent magnets using superconductors. The author then discusses the application of the principles to bearings using high temperature superconductors. Key design parameters and application to flywheels a... View full abstract»

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  • Surge protection for power grids

    Publication Year: 1997, Page(s):26 - 30
    Cited by:  Papers (35)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (867 KB)

    The new high temperature superconductors are well-suited for fault-current limiters, thanks to stable thermal properties and high operating temperatures. This article surveys efforts worldwide to develop a commercially viable superconducting fault-current limiter, but particularly focuses on one project, with which the author is associated, which developed a 2.4 kW, 3 kA prototype. View full abstract»

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  • High capacity cable's role in once and future grids

    Publication Year: 1997, Page(s):31 - 35
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    High temperature superconducting (HTS) cables cooled to 77 K are starting to be tested and could soon be carrying a lot more current through the same old underground city pipes. If superconducting transmission cables can be made to work compatibly with other emerging high-temperature superconducting technologies then it may be possible to layout grids in innovative ways and to position generators ... View full abstract»

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  • Low-calorie, high-energy generators and motors

    Publication Year: 1997, Page(s):36 - 42
    Cited by:  Papers (7)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    Building on prototype motors and generators incorporating low-temperature superconductors, development of high temperature superconducting (HTS) counterparts is well along in Japan and the United States. In this article, the basic approach and principles of a superconducting AC synchronous generator or motor are described, and then the merits of using HTS field windings in their construction are a... View full abstract»

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  • Transforming transformers [superconducting windings]

    Publication Year: 1997, Page(s):43 - 49
    Cited by:  Papers (66)  |  Patents (30)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (14787 KB)

    Use of high-temperature superconducting (HTS) windings may soon turn power transformers into compact high-performers on good terms with the environment. The potential for HTS transformers is being examined in major design and hardware development programs by several teams of engineers and scientists worldwide. The team to which the authors belong is led by Waukesha Electric Systems. The Waukesha-l... View full abstract»

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  • The synthesis of complex systems

    Publication Year: 1997, Page(s):50 - 55
    Cited by:  Papers (14)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1939 KB)

    In systems synthesis the basic lesson-and the hardest to accept-is that not all engineering problems can be or should be solved by deduction from mathematical and scientific principles. Synthesis is provisional and qualitative, a way of thinking different from the definitive, quantitative thinking of analysis. Its technique and tools reflect this difference. In synthesizing the system's initial co... View full abstract»

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  • The practical engineer

    Publication Year: 1997, Page(s): 57
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  • Specifying communications DACs

    Publication Year: 1997, Page(s):58 - 69
    Cited by:  Papers (36)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (4016 KB)

    The explosion in the market for digital communications equipment has fostered unprecedented interest in high performance DACs and highlighted the shortcomings in the way in which these devices are described. The authors discuss the architectures and features of DACs together with specifications (dynamic and static) and signal distortion. Comparisons of DACs are also mentioned. View full abstract»

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  • Evaluating jukebox performance

    Publication Year: 1997, Page(s):70 - 73
    Cited by:  Papers (1)  |  Patents (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (103 KB)

    Thanks to their low cost and high capacity, jukebox CD-ROM systems are becoming popular mass storage devices for multi-user computer systems. As their name suggests, they hold many disks, and they usually play several at a time, with a robotic handler moving the disks between the disk store and disk drive or drives. Meanwhile, numerous manufacturers are producing devices in many shapes and sizes, ... View full abstract»

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  • EEs' Tools & Toys

    Publication Year: 1997, Page(s): 76
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  • Web Sites

    Publication Year: 1997, Page(s): 79
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  • Coming in Spectrum

    Publication Year: 1997, Page(s): 86
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Aims & Scope

IEEE Spectrum Magazine, the flagship publication of the IEEE, explores the development, applications and implications of new technologies.

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Editor-in-Chief
Susan Hassler
IEEE Spectrum Magazine