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Spectrum, IEEE

Issue 4 • Date April 1970

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Displaying Results 1 - 25 of 45
  • [Front cover]

    Publication Year: 1970 , Page(s): c1
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  • [Advertisement]

    Publication Year: 1970 , Page(s): nil1
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  • IEEE Spectrum reader service card

    Publication Year: 1970 , Page(s): 1a - 1b
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  • [Advertisement]

    Publication Year: 1970 , Page(s): 1a - 1b
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  • [Advertisement]

    Publication Year: 1970 , Page(s): 1
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  • Table of contents

    Publication Year: 1970 , Page(s): 2 - 3
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  • The Institute of Electrical and Electronics Engineers, Inc.

    Publication Year: 1970 , Page(s): 4
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  • [Breaker page]

    Publication Year: 1970 , Page(s): 4
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  • An Octave Band Electronically Steerable Phased Array Antenna

    Publication Year: 1970 , Page(s): 5
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  • Forum

    Publication Year: 1970 , Page(s): 6 - 8
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  • [Advertisement]

    Publication Year: 1970 , Page(s): 9 - 10
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  • News from Washington

    Publication Year: 1970 , Page(s): 11 - 12
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  • [Advertisement]

    Publication Year: 1970 , Page(s): 13 - 15
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  • Focal points

    Publication Year: 1970 , Page(s): 16 - 18
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  • Calendar

    Publication Year: 1970 , Page(s): 19 - 21
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  • [Advertisement]

    Publication Year: 1970 , Page(s): 22
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  • Spectral lines

    Publication Year: 1970 , Page(s): 23
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  • Monolithic voltage regulators

    Publication Year: 1970 , Page(s): 24 - 32
    Cited by:  Papers (1)  |  Patents (1)
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    Voltage regulation has been a specialty of semiconductors since the introduction of the Zener diode well over a decade ago. Now, there is a new dimension to the field¿the monolithic voltage regulator. Available in a number of configurations that have specific advantages ranging over a variety of applications, this new component not only is giving its discrete counterpart a run for the money, but is showing a potential that easily surpasses even the most optimistic of earlier predictions. View full abstract»

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  • EHV lines in the Federal Republic of Germany

    Publication Year: 1970 , Page(s): 33 - 40
    Cited by:  Papers (1)
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    To supply the mounting demand for electricity in the Federal Republic of Germany, a network has been built that consists of 380- and 220-kV multiple bundles. Multitiered towers are used to support the conductors because available land is a limited, expensive commodity. As far back as the 1920s, 220kV, in the scope of an emerging interconnected system, became a necessity for covering great distances. Then followed the 380-kV lines in the 1950s¿the first line section being energized in 1957. View full abstract»

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  • A plea for a proper balance of proprietary rights

    Publication Year: 1970 , Page(s): 41 - 46
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    Blanket agreements between employers and employees, requiring the latter to relinquish in advance any claims to any ideas springing up during the term of employment, are considered illegal and against public policy in most highly industrialized countries¿with the notable exceptions of the United States and Great Britain. In the author's opinion, these agreements are eminently unfair to the creative individual; moreover, since they tend to discourage innovation, they have a broad crippling effect on a nation's technological advancement. View full abstract»

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  • Transmission delay and echo suppression

    Publication Year: 1970 , Page(s): 47 - 54
    Cited by:  Papers (6)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (5602 KB)  

    We are all aware that radio communication is not instantaneous. With the coming of satellite communication we have fallen prey to some of the consequences of telephony with long propagation time. So it is that when one person speaks to another via satellite link, he must wait perhaps 600 ms for a rejoinder. Such a delay, of itself, may not be too disconcerting, but in combination with echo it can contribute to poorer quality transmission. This is an account of how echo is produced, how it can affect a telephone conversation, and what steps are being taken to overcome the problems. View full abstract»

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  • Conversion and the import problem: a confluence of opportunities

    Publication Year: 1970 , Page(s): 55 - 62
    Cited by:  Papers (3)
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    The defense electronics industry is again faced with the prospect of cutbacks, which brings the problem of its conversion once more to the fore. At the same time, the growth of imports presages sharp competition for U.S. industry for the products it can devise to take up the slack. Further, the electronics industry has a quality problem, in its military, industrial, and consumer sectors. In this article, the writer suggests that the industry's displaced technical talent should be organized to tackle systematically its scientific, engineering, and economic problems in order to put it ahead once more. As a vehicle of change, he proposes a National Technology Foundation to oversee the program and to undertake tasks now beyond the scope of individual companies. View full abstract»

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  • [Advertisement]

    Publication Year: 1970 , Page(s): 63 - 66
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  • Piezoelectric effects in ferroelectric ceramics

    Publication Year: 1970 , Page(s): 67 - 77
    Cited by:  Papers (2)
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    Ferroelectric ceramics exhibit piezoelectric effects and optical birefringence that are electrically controllable. Consequently, these ceramics are applicable to a wide variety of devices. An article in the February issue has already described electrically actuated light valves and electrically controlled optical filters. The present article deals with the piezoelectric behavior of ferroelectric ceramics. Since, macroscopically, these materials are nearly isotropic, a discussion of their piezoelectric behavior can provide uncluttered¿and surprising¿insight into the theory of piezoelectric energy conversion. View full abstract»

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  • The early history of electronics V. Commercial beginnings

    Publication Year: 1970 , Page(s): 78 - 83
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