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Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics

Issue 5 • Nov. 1952

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Displaying Results 1 - 13 of 13
  • DINA, a digital analyzer for Laplace, poisson, diffusion, and wave equations

    Publication Year: 1952, Page(s):303 - 309
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1862 KB)

    IN AN extremely large number of problems concerning the behavior of physical systems the associated equation consists of the Laplace equation $Delta ^2 u = 0 eqno{hbox{(1)}}$ or one of its close relatives Poisson equation $Delta ^2 u = rho eqno{hbox{(2)}}$ Diffusion equation $Delta ^2 u = kappa {delta u over delta t} eqno{hbox{(3)}}$ Wave equation $Delta ^2 u = {1 over v^2} {delta ^2 u over delta ... View full abstract»

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  • The variation at constant density of the dielectric breakdown of paper with air resistance

    Publication Year: 1952, Page(s):309 - 314
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1747 KB)

    FOR many years engineers have been concerned to find what the factors are that bear on and control the dielectric strength of electric cable insulating papers. Among the well-known factors investigated is the paper's density which, in most instances, has been inextricably intertwined with the paper's air resistance. As far as the authors of this article are aware, no serious attempt has been made ... View full abstract»

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  • Design of unequal-Q double-tuned transformers

    Publication Year: 1952, Page(s):314 - 320
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1562 KB)

    THERE are many instances, in the application of double-tuned transformer coupling, where the primary and secondary Q factors are unequal. When coupling from a crystal converter to the grid of the first intermediate-frequency amplifier, for example, the primary Q is likely to be much lower than the secondary Q. A similar situation exists, if the primary is tuned, when coupling from a transmission l... View full abstract»

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  • Impulse dielectric strength characteristics of liquid-impregnated pressboard

    Publication Year: 1952, Page(s):321 - 325
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1348 KB)

    The impulse dielectric strength of pressboard impregnated with transformer mineral oil and transformer Askarel and a variety of other liquids having differing chemical constitution is reported. It is emphasized that the decreasing dielectric strength with increasing multiple cycles of alternating current is responsible for the high impulse ratio of mineral oil-impregnated pressboard and that this ... View full abstract»

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  • A pulse method for supplying high-voltage power for electrostatic precipitation

    Publication Year: 1952, Page(s):326 - 330
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1864 KB)

    IT IS perhaps not surprising that the fundamentally important advances in the electrostatic method of separating suspended particles from gases have resulted primarily from improved methods of supplying high-voltage power. Both theory and experience bear out the great importance of the methods and apparatus used to supply electric power for the corona discharge in the precipitator, which in turn p... View full abstract»

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  • Electrical and physical properties of IN-420: A new chlorinated liquid dielectric

    Publication Year: 1952, Page(s):330 - 335
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1254 KB)

    A family of new chlorinated liquid dielectrics has been developed. One member of this series, dichloro-1,3,3-trimethyl-1-phenylindan (designated as IN-420), appears particularly suitable for use as a capacitor impregnant. Values of dissipation factor and d-c resistivity are comparable to or somewhat better than existing commercial chlorinated biphenyls. Its dielectric constant and dielectric stren... View full abstract»

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  • Saturable reactors with inductive D-C load: Part I. Steady-state operation

    Publication Year: 1952, Page(s):335 - 343
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1998 KB)

    THE operation of saturable-reactor circuits with purely resistive loads, such as incandescent lamps, has been described in many articles.1¿6 There are, however, a great many applications especially in connection with feedback control systems where the load consists of an inductance, such as the field of an electric machine, requiring direct current. Yet the writer is not aware of any published ma... View full abstract»

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  • A new property of 2-dimensional fields

    Publication Year: 1952, Page(s):343 - 347
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1245 KB)

    A new property of 2-dimensional fields is presented. It has to do with a field in a nearly closed area that is without sources, a typical example of which is the flux in a slot. This will be called the original field. Any such original field always has correlated with it what will be called a correlative field, the correlative field having an entirely different conformation. View full abstract»

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  • A milestone in the communication arts

    Publication Year: 1952, Page(s): 347
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (303 KB)

    THE Centennial which engineers now celebrate marks not the end of a century of engineering but rather the 100th anniversary of the organization of engineers for the advancement of applied science. Truly engineering began at man's emergence from the very primitive state. No doubt the first use of fire was looked upon with as much awe and apprehension as is the control of nuclear fission today. To f... View full abstract»

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  • The development of telephony in the United States

    Publication Year: 1952, Page(s):348 - 364
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (15399 KB)

    The telephone was invented 24 years after the founding of the American Society of Civil Engineers and Architects, which society commemorated its Centennial in September 1952. The telephone was 8 years old when the American Institute of Electrical Engineers was founded. Since Bell's invention, the telephone business has grown tremendously and this growth has been greatly dependent on developments i... View full abstract»

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  • Historic highlights in developing the radio broadcasting and television arts

    Publication Year: 1952, Page(s):364 - 371
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2481 KB)

    This is a progress report and review of the outstanding pioneering achievements behind the development of radio broadcasting and television as effective services to the public and the nation. Growth of both of these arts receives separate attention in chronological order; discussion also is included of their inherent relationship. Coverage is given not only to the principal phases of development b... View full abstract»

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  • The first 50 years of International radio communication

    Publication Year: 1952, Page(s):371 - 375
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1581 KB)

    ONE hundred and sixty-four years ago Galvani discovered the existence of current electricity, previous knowledge having been confined to static electricity and the spark discharges associated with it. Significant additional fundamental discoveries made by Volta, Oersted, and Faraday provided the knowledge that enabled Morse to develop the practical instrumentality of the wire telegraph which used ... View full abstract»

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  • The impress of enterprise upon telegraphy's first century

    Publication Year: 1952, Page(s):375 - 382
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2289 KB)

    The relative merits of private versus government ownership and operation are examined in the field of electrical communication, advantage being taken of evidence covering approximately a century, distinguishing American experience in private corporations from that of Europe in state administrations. Principal attention is focussed on telegraphy, as oldest of the electrical industries, and on those... View full abstract»

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Aims & Scope

This Transactions ceased publication in 1963. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope