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Journal of the A.I.E.E.

Issue 4 • April 1925

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Displaying Results 1 - 25 of 71
  • Keep at it everlastingly

    Publication Year: 1925, Page(s):337 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB)

    For several years the officers of the four Founder Societies have been endeavoring to bring to the attention of the public the usefulness of the combined training and experience of the engineering profession. View full abstract»

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  • A two-speed salient-pole synchronous motor

    Publication Year: 1925, Page(s):339 - 346
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3020 KB)

    The design features and performance characteristics of salient-pole synchronous motors are well known and have been thoroughly covered in the technical press. The synchronous motor has been handicapped in the past because it is inherently a single-speed machine, and a change in speed could be obtained only by a change in the frequency of the power supply. Changing the frequency, however, is not pr... View full abstract»

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  • The single, straight conductor as a new fundamental

    Publication Year: 1925, Page(s): 346
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The Journal Franklin Institute for February contains an article by Carl Hering in which he shows how the single, straight conductor can be used as a fundamental, and how simple and well defined its properties are. View full abstract»

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  • Applications of motors to mine locomotives

    Publication Year: 1925, Page(s):347 - 349
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    This paper discusses the rule of thumb method of applying motors to mine locomotives. It shows why speed of locomotive should be considered in selecting motor horse power. It indicates a rational method of selecting motors for locomotives for general application. View full abstract»

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  • Thermal expansion of aluminum and various important aluminum alloys

    Publication Year: 1925, Page(s): 349
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Scientific Paper of the Bureau of Standards, No. 497, gives data on the linear thermal expansion of 4 samples of aluminum and 51 samples of important aluminum alloys. The preparation, chemical composition, heat treatment, etc., are included. Most of the specimens were examined from room temperature to about 500 deg. cent. Typical expansion curves of the various groups of samples are shown and disc... View full abstract»

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  • Synchronous motor drive for rubber mills: With special reference to dynamic braking control for safety stopping

    Publication Year: 1925, Page(s):350 - 353
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2227 KB)

    Since wound-rotor induction motors with clutch brakes have been very commonly used for this application, a review of the operating conditions and safety requirements is given, in order to show why synchronous motors without clutches may be used for the same application. View full abstract»

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  • Theory and performance of rectifiers

    Publication Year: 1925, Page(s): 353
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The Bureau of Standards recently completed a study of the performance of rectifiers of the type used for charging storage batteries, and the results are now available in Technologic Paper, No. 265, copies of which may be obtained from the Superintendent of Documents at Washington, D. C. View full abstract»

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  • Niagara Falls to be permanently lighted

    Publication Year: 1925, Page(s): 353
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    According to a recent announcement permanent illumination is to be provided for Niagara Falls from a battery of twenty-four powerful search lamps which will cast 1,320,000,000 candle power. May 24th is the date set for the completion of the installation and a celebration is being planned by the Niagara Falls Chamber of Commerce for this occasion when this powerful battery of search lamps will be t... View full abstract»

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  • Use of frequency changers for interconnection of power systems

    Publication Year: 1925, Page(s):354 - 356
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (718 KB)

    FOLLOWING an extensive study into the cost of power as delivered to the customer, the Brooklyn Edison Company adopted the policy of supplying all the increase in business at 60-cycle alternating-current and curtailing the direct-current load within the capacity of the existing substations. With the 25-cycle generation confined primarily to the supply of power to the direct-current system all new p... View full abstract»

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  • A new alternating-current general-purpose motor

    Publication Year: 1925, Page(s):356 - 363
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2831 KB)

    The desirability of motors possessing the good characistics of induction motors and being capable of operating with leading power factor is pointed out. A new machine is described which operates as self-excited synchronous motor under normal operating conditions. During the starting period and excess overloads, it has the characteristics of an induction motor with wound secondary. The machine has ... View full abstract»

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  • Electrical measurement of physical values: The determination by electrical and magnetic means of quantities not in themselves of an electrical nature

    Publication Year: 1925, Page(s):363 - 365
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    THIS paper was prepared under instructions from the Committee on Instruments and Measurements, with a view to forming a basis for the Committee's work in connection with electrical measurements as applied outside of the strictly electrical field. The system of classification used is in accordance with the nature of the quantity under measurement, rather than with the principle involved; and the su... View full abstract»

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  • Mechanical stresses in busbar supports during short circuits

    Publication Year: 1925, Page(s):365 - 372
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1781 KB)

    THE design of busbar layouts calls for the determination of the stresses occurring in the bus supports during short circuits, because the stresses in question may become sufficiently large to weaken, or even rupture, the supports. Moreover, an understanding of the factors affecting the stresses will often permit the designer to modify the layout so as to reduce the stresses, and thus save material... View full abstract»

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  • Development and characteristics of a 1,000,000-volt cascade transformer at california institute of technology

    Publication Year: 1925, Page(s):373 - 378
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2067 KB)

    This paper is presented to describe the cascade connection for transformers, and show the standard characteristics of such equipment, but it does not give building-plans for the 1,000,000-volt laboratory, as they have been presented in other publications. View full abstract»

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  • Metallic polar-duplex telegraph system for long small-gage gables

    Publication Year: 1925, Page(s):378 - 386
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2570 KB)

    In connection with carrying out the toll-cable program of the Bell System, a metallic-circuit polar-duplex telegraph system was developed. The metallic-return type of circuit lends itself readily to the cable conditions, its freedom from interference allowing the use of low potentials and currents so that the telegraph may be superposed on telephone circuits. The new system represents an unusual r... View full abstract»

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  • Discussion at annual convention: A new type of single-phase motor

    Publication Year: 1925, Page(s):386 - 389
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1188 KB)

    V. Karapetoff: An impression may be gathered from the paper that the power factor of the motor is improved because the squirrel-cage winding is highly inductive. It seems to me that the squirrel-cage winding necessarily has to be highly inductive so as not to interfere with the series characteristics of the motor at the start. If it were not for an additional mechanical complication (Fig. 2), it w... View full abstract»

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  • Sensitive radio-frequency relay

    Publication Year: 1925, Page(s):389 - 390
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1409 KB)

    J. Slepian: The device described by Mr. Lewis has several distinct elementary parts performing rather distinct functions; there are the filament and grid, giving the usual detector action, there is a thermally responsive element and there is a contact which opens and closes. View full abstract»

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  • High-voltage impregnated paper cables

    Publication Year: 1925, Page(s):390 - 392
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1700 KB)

    D. W. Roper: A point which should be more prominently set forth is that as the operating voltage of a cable increases, the quality must improve. What is needed at the present time is some method of measuring the quality of the insulation and determining the maximum operating voltage for which a given quality of cable is suited, and to which it should be limited. There are also needed some other te... View full abstract»

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  • Discussion at pacific coast convention: The corona as lightning arrester

    Publication Year: 1925, Page(s):393 - 394
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (606 KB)

    F. W. Peek, Jr.: In a paper that I presented at Swampscott last year I described some tests in which the variation of the steepness of the wave front and the voltage of a wave were measured as it traveled along a line on which there was considerable corona loss. View full abstract»

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  • Corona losses between wires at extra high voltage

    Publication Year: 1925, Page(s):394 - 397
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1127 KB)

    F. W. Peek, Jr.: Prof. Harding has given us some curves up to 500,000 volts on conductors good for operation at 220 kv. or less. His loss measurements under some conditions show a close agreement with the quadratic law over a reasonable range of voltage for the conductors. The difference on several of the conductors is, I believe, due to the fact that sphere gaps were used for voltage measurement.... View full abstract»

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  • Interconnection of power systems in the Southeastern states

    Publication Year: 1925, Page(s): 397
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (349 KB)

    P. H. Thomas: Mr. Mitchell's paper is particularly timely since it indicates not only the most advanced point to which widespread interconnection of large systems has progressed in actual practice, but points out the probable solution of some of the problems now being faced in the further extension of interchange. View full abstract»

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  • Large steam turbine generators

    Publication Year: 1925, Page(s):397 - 398
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (637 KB)

    A. M. Rossman: The built-up rotor construction which Mr. Foster describes is interesting to us because of an experience which we have had within the last two or three months with a solid forged rotor. View full abstract»

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  • Heating of large steel-cored aluminum conductors

    Publication Year: 1925, Page(s):398 - 399
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    A. M. Rossman: I was shown recently some results of a heating test of a cable passing through a clamp. The cable was 300,000 cir. mil copper cable and the clamp was a drop forging. In that case the current was raised to such a value as to give an appreciable heating of the conductor. The clamp showed a temperature several degrees higher than the conductor. This is contrary to the results which Mr.... View full abstract»

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  • The possibilities of flash-overs

    Publication Year: 1925, Page(s):399 - 403
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    F. W. Peek, Jr.: If I understood Mr. Austin correctly, it is his belief that insulators on transmission lines may arc-over at very much reduced voltages due to some localized high-frequency phenomena starting at a corona brush. View full abstract»

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  • Lightning and other transients on transmission lines lightning

    Publication Year: 1925, Page(s):403 - 407
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1463 KB)

    F. W. Peek, Jr.: In some respects Mr. Creighton's conclusions are not as far from my own as might appear at first glance. The effect on transmission lines is determined wholly by the gradient. The fact that he has very high energy values is due to the high voltages or high cloud heights that he has assumed. View full abstract»

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  • Electric power application in pacific Northwest fir mills

    Publication Year: 1925, Page(s):407 - 409
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (908 KB)

    G. B. Rosenblatt: I have recently interested myself in the electrification of the lumber industry, and looking at it as an outsider who is coming in, I have seen some things, possibly, that those who have grown up with the industry don't recognize. View full abstract»

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Aims & Scope

The Journal of the American Institute of Electrical Engineers (AIEE) contains articles published between 1924 and 1930. Contents are devoted to the advancement of theory and practice of electrical engineering and the allied arts and sciences.

This Journal ceased publication in 1930. The current retitled publication is IEEE Spectrum.

Full Aims & Scope