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Proceedings of the Institute of Radio Engineers

Issue 1 • Date Feb. 1919

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Displaying Results 1 - 13 of 13
  • Information about the Society

    Publication Year: 1919, Page(s):nil1 - 2
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    Freely Available from IEEE
  • Contents of Volume 7

    Publication Year: 1919, Page(s):nil3 - 3
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  • [Front cover]

    Publication Year: 1919, Page(s): c1
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  • J.F.J. Bethenod, "Correction to Discussion on a Paper, by Leon Bouthillon"

    Publication Year: 1919, Page(s): 3
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  • Officers and Board of Direction, 1919

    Publication Year: 1919, Page(s):4 - 6
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  • Edward J. Baskin, Guy E. Morse, William D. Woodcock [Obituaries]

    Publication Year: 1919, Page(s): 7
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  • Resonance Measurements in Radiotelegraphy with the Oscillating Audion

    Publication Year: 1919, Page(s):9 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The telephone click in an oscillating audion circuit when a coupled circuit is brought into tune with it is utilized to measure quickly and accurately antenna capacity, wave length of distant stations, capacities, inductances, and wave lengths. View full abstract»

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  • A Brief Technical Description of the New San Diego, Pearl Harbor, and Cavite High Power Naval Radio Stations (Supplementing Captain Bullard's Paper)

    Publication Year: 1919, Page(s):11 - 13
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    The new high power Federal-Poulsen arc stations of the United States Navy are described briefly. The motor-generator sets, temperature rises, field excitation, and operating characteristics are given. The arc-converter, antenna loading inductance, and wave changing switch are described shortly. View full abstract»

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  • Hysteresis and Eddy-Current Losses in Iron at Radio Frequencies

    Publication Year: 1919, Page(s):15 - 26
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    After reviewing the bibliography of heat losses per cycle at various frequencies, the author describes a comparison calorimnetic method whereby the losses in the soft iron wire core of a toroid are measured (against a similarly wound toroid without an iron core). The Chaffee gap radio frequency generator is used. Braun tube oscillograms of the cycle are shown, together with experimental data on th... View full abstract»

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  • The Measurement of Radio Frequency Resistance, Phase Difference, and Decrement

    Publication Year: 1919, Page(s):27 - 60
    Cited by:  Papers (2)
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    The methods of measuring resistance and related quantities at radio frequencies are fewer in number and necessarily different from those at low frequencies. The conditions of such measurements and the relations of various methods have not previously been given in comprehensive fashion. This paper shows the relations between resistance, phase difference, sharpness of resonance, and decrement. The m... View full abstract»

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  • Note on Losses in Sheet Iron at Radio Frequencies

    Publication Year: 1919, Page(s):61 - 71
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    In this article there is determined the power dissipated separately by Foucault currents and by hysteresis, in a sheet of iron, on the assumption that there exists a constant angle of lag between the magnetic induction in the sheet and the magnetizing field producing it. There is deduced the thickness which should be given to the iron sheets of apparatus supplied with radio frequency current, in o... View full abstract»

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  • The Natural Frequency of an Electric Circuit Having an Iron Magnetic Circuit

    Publication Year: 1919, Page(s):73 - 82
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    In radio or high audio frequency circuits cpntaining iron-core inductances, the eddy currents induced in the iron cause a marked change of effective inductance which is dependent on the frequency. Following the Steinmetz procedure, the author finds the magnetic flux density in a laminated iron core with alternating current excitation. He then derives expressions and tables for determining the natu... View full abstract»

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  • Discussions on 'The Electrical Operation and Mechanical Design of an Impulse Excitation Multi-Spark Group Radio Transmitter' by Bowden Washington

    Publication Year: 1919, Page(s):83 - 87
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Aims & Scope

This Periodical ceased production in 1938. The current retitled publication is Proceedings of the IEEE.

Full Aims & Scope