Volume 25 Issue 8 • Aug. 1988

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Displaying Results 1 - 5 of 5
  • The longest survivor loses its grip [TV receiver manufacture]

    Publication Year: 1988, Page(s):16 - 20
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    The author examines how Zenith Electronics Corp., the last major US television set maker, which has lost the formula for profitability, managed to hang on as long as it did. Pressures for sale of the company's consumer electronics division are discussed. The history of its television business is sketched, and its current outlook is considered.<<ETX>> View full abstract»

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  • Digital electronics meets its match (acoustooptic devices)

    Publication Year: 1988, Page(s):21 - 25
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (725 KB)

    The promise shown by acoustooptic (AO) spectrum analyzers and correlators in field-test prototypes for radar, communications and electronic-warfare surveillance is discussed. The principle of operation of AO devices is explained, and its use for correlation and convolution is examined. Two types of Bragg cell (the basic AO component) are described: surface-acoustic-wave (SAW) and bulk cells. The u... View full abstract»

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  • How to automate analog IC designs

    Publication Year: 1988, Page(s):26 - 30
    Cited by:  Papers (32)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1076 KB)

    Knowledge-based systems that have made the computer-aided design (CAD) of analog circuits feasible are discussed. The three systems-Idac, Oasys, and Opasyn-were formally announced in 1987. Although they differ widely in philosophy, all use common building blocks and produce sized-schematic diagrams showing how transistors, capacitors, and so forth are connected, complete with the components' value... View full abstract»

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  • The iffy 'Orient Express' [hypersonic transport]

    Publication Year: 1988, Page(s):31 - 33
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    The X-30, a proposed hypersonic transport that could fly at up to 25 times the speed of sound, is discussed. Two current US programs are described: a joint US Department of Defense/NASA program for a national aerospace plane (NASP), and research into high-speed commercial flight by NASA. The technological requirements of such a vehicle are examined, and the issues raised by the high cost of its de... View full abstract»

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  • Extracting power from the Amazon basin

    Publication Year: 1988, Page(s):34 - 38
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (650 KB)

    Brazil's plans for scores of hydropower dams on rivers deep into the rain forest are discussed. Two dams have been built by 1988. Tucurui, already completed, generates 4000 megawatts (MW) of electricity from a 2430-square-kilometer forebay; when complete, its power plant will have a capacity of 7300 MW. Balbina which has been a problem to develop, is due to start operating this year, six years beh... View full abstract»

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