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Journal of the American Institute of Electrical Engineers

Issue 5 • May 1923

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Displaying Results 1 - 25 of 37
  • Discussion of application and economics of automatic railways substations

    Publication Year: 1923, Page(s):439 - 444
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1506 KB)

    The automatic substation is defined, and its history is traced from the first station placed in service in 1914 to the present time. The number of automatically controlled railway stations up to the beginning of 1922 is given as 142 equipments totaling 86,000 kw. Outside the city of Cleveland, two-unit stations have been installed in but four instances, although a number of these stations are now ... View full abstract»

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  • Theory of electric wave filters built up of coupled circuit elements

    Publication Year: 1923, Page(s):445 - 462
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3171 KB)

    This paper is essentially a treatment of certain types of coupled circuit networks by methods similar to those used in the discussion of the properties of long lines with distributed constants. This method of treating those coupled circuit chains to which it can be applied far surpasses other methods of treatment in several important ways. First, the number of elements in the chain can be made as ... View full abstract»

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  • Measurement of transients

    Publication Year: 1923, Page(s):462 - 466
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1982 KB)

    The transient crest meter was developed to investigate several pressing problems in high-voltage transients. It consists of a gold leaf electroscope in series with a rectifying device, an electron tube, which enables the electroscope to charge, but prohibits discharge. The charge that is captured in this manner is proportional to the maximum impressed potential, and where adequate insulation is po... View full abstract»

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  • The neutral grounding reactor

    Publication Year: 1923, Page(s):467 - 484
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (14568 KB)

    A neutral grounding reactor (Petersen Coil) has been in operation on the system of the Alabama Power Company since October 12, 1921. This is the first of these devices in this country, although there are perhaps several hundred of them in operation in Europe. The present paper discusses the tests made shortly after installation of this reactor. A companion paper by Messrs. J. M. Oliver and W. W. E... View full abstract»

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  • 1922 Developments in autovalve lightning arresters

    Publication Year: 1923, Page(s):485 - 490
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2003 KB)

    The work done in the past year in developing commercial forms of lightning arresters based on the “autovalve” principle is reported. Fundamental data given by Dr. Slepian at the 1922 Midwinter Convention are briefly reviewed. The balance of the paper deals with new material and covers further research, development and test. Further research supports the original findings and gives sp... View full abstract»

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  • Observations on electric railway practise

    Publication Year: 1923, Page(s):490 - 497
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5678 KB)

    The development of rail transportation since the day of stage-coaches and horsedrawn tram cars, has been a process of evolution in which some reminders of the past are still noticeable. View full abstract»

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  • Some problems in electric furnace operation

    Publication Year: 1923, Page(s):498 - 509
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1818 KB)

    Based upon the theory that the reactance of a three-phase electric furnace does not depend upon the load but is a constant depending on the arrangement of the conductors, the general equations of the three-phase furnace are developed and discussed. It is shown that, due to the fact that the main conductors carrying the current from the interlaced bus bars to the furnace are more or less in one pla... View full abstract»

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  • The wave antenna: A new type of highly directive antenna

    Publication Year: 1923, Page(s):510 - 519
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1909 KB)

    Fig. 43 shows the relations between Ib, Ia and the reflected current, for θ = 180 deg. View full abstract»

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  • The pallophotophone

    Publication Year: 1923, Page(s):520 - 524
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3135 KB)

    The name pallophotophone has been given to a new device used both for permanently recording speech in a wavy trace on a moving photographic film, and for transforming the air vibrations of sound into exactly corresponding electrical vibrations for transmission directly, for example, to wireless broadcasting generators. The syllables “pallo” of this new word are taken from the Greek a... View full abstract»

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  • Cable geometry and the calculation of current-carrying capacity

    Publication Year: 1923, Page(s):525 - 539
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3144 KB)

    The main purpose of this article is to express the calculation of current-carrying capacity in simple formulas. The allowable current for underground cables is usually limited by the maximum permissible temperature of the insulation. The temperature rise is of course a function of the ability of the cable system to dissipate the heat generated. The chief difficulty in the calculation of current-ca... View full abstract»

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  • The production of porcelain for electrical insulation — II

    Publication Year: 1923, Page(s):540 - 543
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1005 KB)

    This article deals with ceramic raw materials, chiefly clays, quartz and feldspar. CLAYS. The physical properties of clays are of interest. Plasticity is one of the principal properties of clays. The cause of plasticity is probably to be sought in the dispersed nature of the fine clay particles which have the properties of a suspension colloid. Small amounts of alkalies, when added to clay suspens... View full abstract»

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  • Illumination items: By the lighting and illumination committee: Relative performance of tungsten filament lamps under test upon alternating and direct-current circuits

    Publication Year: 1923, Page(s): 544
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Drawn wire tantalum filament lamps suffered from crystallization and offsetting so seriously as to restrict their use very generally to direct-current circuits, where these effects were not so pronounced. Drawn wire tungsten filament lamps suffer from similar effects of alternating-current operation, although the manufacturers of Mazda lamps have succeeded in treating the filament in such a manner... View full abstract»

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  • Effect of light on the drawing power of the show window

    Publication Year: 1923, Page(s): 545
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The practise of providing illumination in show windows during the evening hours has long been accepted by merchants as a successful method of promoting sales. However, in the past, there have been few data available which showed the magnitude of the drawing power of different levels of illumination. An investigation was therefore made to provide facts from which the actual value of poorly or brigh... View full abstract»

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  • Proper use of mill-type lamps

    Publication Year: 1923, Page(s): 545
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    Mazda B mill-type lamps, available in the 25 and 50-watt size in the 115-volt class, and in the 50-watt size in the 230-volt class, are designed to fill the need for a lamp which will operate satisfactorily where the service is too severe for Mazda lamps of the regular construction. To those classes of service where severe vibration is encountered are the mill-type lamps particularly adapted. View full abstract»

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  • A. I. E. E. Spring convention Pittsburgh, April 24–26

    Publication Year: 1923, Page(s): 546
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (867 KB)

    Plans for the Spring Convention of the A. I. E. E. have been well matured and as we go to press with this issue of the Journal reports from the Convention Committee at Pittsburgh indicate an enthusiastic meeting with exceptionally good attendance. The subjects to be discussed at this meeting are largely devoted to electrical operation and are expected to prove of unusual interest, especially in th... View full abstract»

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  • A. I. E. E. Summer convention plans: Swampscott meeting to have diversified papers and varied entertainment — Engineering progress to be featured

    Publication Year: 1923, Page(s):546 - 547
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    Freely Available from IEEE
  • The setting of the Swampscott convention

    Publication Year: 1923, Page(s):547 - 548
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3248 KB)

    One of the chief attractions of the Swampscott convention of the Institute will be the beautiful surroundings which will form an appropriate setting for the activities of the delegates, enhanced as these are by a wealth of historical interest closely identified with the early days of our country. There is a charm about this historic atmosphere peculiar to New England; the old-time flavor of coloni... View full abstract»

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  • Pacific Coast convention change of date

    Publication Year: 1923, Page(s): 548
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1325 KB)

    Attention is called to a change in date of the Pacific Coast Convention at Del Monte, Cal., from September 25–28 to October 2–5, 1923. View full abstract»

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  • A. I. E. E. annual meeting

    Publication Year: 1923, Page(s): 548
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    Freely Available from IEEE
  • Amendments to the standards rules

    Publication Year: 1923, Page(s):548 - 549
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1550 KB)

    At the meeting of the Standards Committee on May 11, final action will be taken on the following minor changes in the Standards Rules, which have already been tentatively adopted by the Standards Committee. View full abstract»

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  • American association for the advancement of science: Los Angeles meeting

    Publication Year: 1923, Page(s): 549
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    Freely Available from IEEE
  • Future section meetings

    Publication Year: 1923, Page(s): 549
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    Freely Available from IEEE
  • Sir Alfred Yarrow makes gifts to Royal society

    Publication Year: 1923, Page(s): 549
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (241 KB)

    News comes from London that Sir Alfred Yarrow has given 100,000 pounds to the Royal Society. His philanthropy is another step toward the identity of effort which engineers and men of science are striving to accomplish throughout the Anglo-Saxon world. View full abstract»

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  • American Engineering Council

    Publication Year: 1923, Page(s): 550
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    Freely Available from IEEE
  • American engineering standards committee

    Publication Year: 1923, Page(s): 550
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    Freely Available from IEEE

Aims & Scope

This Magazine ceased publication in 1923. The current retitled publication is IEEE Spectrum.

Full Aims & Scope