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Journal of the A.I.E.E.

Issue 7 • Date July 1926

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Displaying Results 1 - 25 of 48
  • The investigation of engineering education

    Publication Year: 1926, Page(s):611 - 612
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (506 KB)

    On June 10, Dr. Jewett, National Secretary Hutchinson and the undersigned met in conference with Messrs. Wickenden and Hammond, representatives of the Society for the Promotion of Engineering Education, for the purpose of discussing the following findings and recommendations of the Board of Investigation and Coordination regarding Engineering Education: View full abstract»

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  • Some leaders of the A. I. E. E.

    Publication Year: 1926, Page(s): 612
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    Freely Available from IEEE
  • Regenerative braking for direct-current locomotives

    Publication Year: 1926, Page(s):613 - 619
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    This paper gives a comparative study of several d-c., regenerative braking systems now in successful operation. The general characteristics of regenerative braking, including advantages, limitations and functions are briefly discussed. The principal points covered in the descriptions of the various systems are: method of field excitation during regeneration, compensation for sudden changes in line... View full abstract»

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  • The high-speed circuit breaker in railway feeder networks

    Publication Year: 1926, Page(s):619 - 626
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3469 KB)

    A method of isolating grounded sections of extensive feeder networks supplying power to railways without disturbing the power supply to other sections has long been desired by railway engineers. This has been successfully accomplished by utilizing the inherent characteristics of the magnetic type of high-speed circuit breakers in the manner described in this article. These characteristics are (a) ... View full abstract»

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  • The effect of internal vacua upon the operation of high-voltage cables

    Publication Year: 1926, Page(s):627 - 629
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (798 KB)

    It has been known for some time that the internal mechanical pressure of cables is a factor in the quality of the insulation, and that the oil used in impregnating paper for cable insulation has a high thermal expansion which may alter the internal pressure of cables with varying temperature. This paper considers the rate of pressure equalization in cables and the relative effects of slow equaliza... View full abstract»

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  • New machine mines coal by electricity

    Publication Year: 1926, Page(s): 629
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    A new-type electrically driven mining machine is being now tried out in various coal regions of the country. It is a powerful machine that cuts its way into the face of a bed of coal, breaks the coal loose and loads it into mine cars without the exercise of manual labor or the firing of a single ounce of powder or dynamite, such as often cause mine explosions. In a test run, this machine was able ... View full abstract»

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  • Rectifier voltage control

    Publication Year: 1926, Page(s):630 - 636
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1622 KB)

    Lack of voltage control is one of the objections which have been made to the use of rectifiers. The author describes a method of voltage control for rectifiers based on the use of a saturated core interphase transformer. Saturation of this device produces a gradual change from two three-phase rectifiers operating in parallel to one six-phase rectifier which has a higher inherent voltage ratio. The... View full abstract»

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  • Polarization of radio waves

    Publication Year: 1926, Page(s):636 - 640
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2175 KB)

    UNTIL rather recently, the practise of radio communication was confined to the use of long, earth-bound waves. These waves are preferred on account of the regularity of day and night operation and the absence of fading. The characteristics of the earth-bound wave were extensively explored and there was a tendency to generalize these results assuming that they apply to all radio wave transmission. View full abstract»

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  • Jordan river to produce electricity to revive Palestine

    Publication Year: 1926, Page(s): 640
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (570 KB)

    The waters of the Jordan River, in Palestine, once were regarded as having power to revive the souls and spirits of men; today the river is helping to revive industry in the Holy Lands. Bernard Flexner, president of the Palestine Economic Corporation, has announced that the new corporation will help finance the hydroelectric station on the Jordan which will supplement the electric power produced b... View full abstract»

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  • Tremendous wastes due to bad light

    Publication Year: 1926, Page(s): 640
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (570 KB)

    The bugaboo of bad light in schools and factories is no imagination, according to Guy A. Henry of New York, general director of the Eyesight Conservation Council of America. Speaking at Boston May 28 he stated that one-third of the six million retarded pupils in American schools were in their present condition because of neglected eyesight that could be partially corrected by proper illumination. ... View full abstract»

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  • Lightning and other experiences with 132 — kv.-steel tower transmission lines, and its bearing on tower-line design from the continuity of service standpoint

    Publication Year: 1926, Page(s):641 - 651
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3738 KB)

    A large number of transmission lines have been erected without adequate consideration having been given to the ability of the line to stay in circuit electrically during the occurrence of lightning or other disturbance conditions. These come, however, within the range of the transmission engineer's field of action. The author's experience with a 55 — mi., 132 — kv. transmission line ... View full abstract»

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  • New electric code for Mexico

    Publication Year: 1926, Page(s): 651
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    Demand for electrical supplies in Mexico have been stimulated by the issuance of a new electric code, which raises the standard of permitted equipment. Existing installations shall be made to conform to the new code by July 11, 1926, but the Department of Industry, Commerce, and Labor is authorized to extend the period if necessary. View full abstract»

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  • Zero method of measuring power with the quadrant electrometer

    Publication Year: 1926, Page(s):652 - 661
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1703 KB)

    This paper describes a zero method of measuring power by means of the quadrant electrometer developed by the authors, and which we believe to be new. Zero deflection of the electrometer is obtained by opposing the torque produced by the a-c. load by means of a counter torque set up by continuous potentials introduced into the electrometer circuit. The continuous potentials required are small in va... View full abstract»

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  • General theory of the auto-transformer

    Publication Year: 1926, Page(s):661 - 665
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    The method of complex quantities lends itself admirably to the development of general theory of the auto-transformer. As worked out, in this instance, it is found desirable to maintain the actual voltage ratio instead of reducing values to an equivalent 1:1 basis. Examples are given of calculations by this method, and also comparison is made with calculated performance of the two-circuit transform... View full abstract»

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  • Variable armature leakage reactance in salient-pole synchronous machines

    Publication Year: 1926, Page(s):665 - 669
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1073 KB)

    The electrical performance characteristics of a polyphase synchronous machine, that is, its voltage-current relations under load, depend essentially upon the nature and the extent of the magnetomotive forces of the armature currents. Broadly speaking, the effect of these magnetomotive forces is two-fold; i. e., (a) they oppose and distort the field magnetomotive force and (b) they create leakage f... View full abstract»

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  • Correspondence: Discussion on alternating-current analysis alternating-current analysis (Mershon)

    Publication Year: 1926, Page(s): 669
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (263 KB)

    Summary form only given, as follows. The statement which appeared in the May 1926 JOURNAL concerning the use in several text-books of the method presented by Mr. Mershon was hastily written on the basis of impression rather than fact. Since then I have attempted, but failed, to find the method in any of the usual texts. I take this opportunity to correct my error and apologize to Mr. Mershon. View full abstract»

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  • Appendix

    Publication Year: 1926, Page(s):669 - 670
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    Derivation of formula (d). View full abstract»

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  • Possible discontinuance of radio standard frequency transmissions

    Publication Year: 1926, Page(s): 670
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    Since March, 1923, the Bureau of Standards has been transmitting, twice a month, radio signals of definitely announced frequencies for use by the public in standardizing frequency meters (wave meters) and transmitting and receiving apparatus. The signals are transmitted from the Bureau station, W W V, Washington, D.C., and from station 6XBM, Stanford University, California. View full abstract»

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  • Discussion at midwinter convention

    Publication Year: 1926, Page(s): 671
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  • Supervisory systems for electric power apparatus

    Publication Year: 1926, Page(s):671 - 673
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (882 KB)

    C. E. Stewart: I should like, briefly, to call attention to one or two things of interest. In the first place, supervisory systems have passed the experimental stage. We have had actual service out of the systems so that we know that they are successful in the field for which they are intended. By the end of this year, systems put out by the General Electric Company alone will have supervision ove... View full abstract»

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  • The cross-field theory of alternatingcurrent machines

    Publication Year: 1926, Page(s):673 - 674
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (625 KB)

    P. L. Alg´er: Mr. West has presented in his paper a businesslike and accurate way of obtaining the characteristics of an a-c. motor. The method is particularly adapted, and, in fact, was especially intended, for use by engineers having to do with large numbers of motors. Probably we all agree that the circle diagram, or some similar graphical method, is most suitable for college instruction... View full abstract»

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  • Development and application of loading for telephone circuits

    Publication Year: 1926, Page(s):674 - 676
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (934 KB)

    Bancroft Gherardi: The invention of loading and the development of telephone repeaters have, together, revolutionized the engineering of toll-line plants in the United States. For the invention of loading we are indebted to Dr. Pupin. View full abstract»

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  • Methods of high quality recording and reproducing of music and speech based on telephone research

    Publication Year: 1926, Page(s): 676
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1137 KB)

    C. R. Hannas The following discussion applies particularly to that part of the paper dealing with the reproducing mechanism. The relative merits of the several improvements that were made are not clearly brought out in the paper and it is the purpose of the writer to compare the importance of the various developments. View full abstract»

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  • Mechanical force between electric circuits

    Publication Year: 1926, Page(s):679 - 681
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (749 KB)

    J. Slepian: The relation which is perhaps most frequently used by electrical engineers for calculating mechanical forces between circuits is that due to Maxwell, which states that, in any displacement in which currents are kept constant, the mechanical work received during' the displacement is equal to the increase in magnetic energy of the system. This relation is readily derived from the princip... View full abstract»

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  • Parameters of heating curves of electrical machinery

    Publication Year: 1926, Page(s):681 - 683
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (854 KB)

    G. E. Luke: As mentioned in this paper, Professor Kennelly derived the heating characteristics of an electric machine by considering it as one “chunk” of metal2. This paper gives the thermal equations on the basis of two “chunks” of metal (core and windings). An approximate solution of this problem based on three “chunks” of metal (core, winding... 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