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A.I.E.E., Journal of the

Issue 5 • Date May 1925

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Displaying Results 1 - 25 of 61
  • More electrical usefulness

    Publication Year: 1925 , Page(s): 449 - 450
    Request Permissions | Click to expandAbstract | PDF file iconPDF (511 KB)  

    The broadening of the field of electrical application is evidenced on every side. In looking over papers presented at Pasadena in October, at New York in February, and in April at St. Louis, it is easy to recognize the new comers, fresh from the advance lines of new application. The engineers of the industrial world have been so busy with their own individual problems that we have heard little fro... View full abstract»

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  • Communication in railroad operation

    Publication Year: 1925 , Page(s): 451 - 457
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1795 KB)  

    The object of this paper is to show the part played by the different means of electrical communication in operating a large railroad system. The telegraph, which was the original and sole means of handling communications requiring immediate attention, has given way largely to the telephone and the printer. The development of the selector was essential to the general use of the telephone for train ... View full abstract»

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  • Report from Russian information Bureau, Moscow

    Publication Year: 1925 , Page(s): 457
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    Freely Available from IEEE
  • Load building possibilities of industrial heating

    Publication Year: 1925 , Page(s): 458 - 462
    Request Permissions | Click to expandAbstract | PDF file iconPDF (4260 KB)  

    The author gives a brief survey of the more recent achievements in industrial electric heating, and shows the increasing tendency of industries to adopt electric heating, particularly for high grade products. Specific installation for such processes as steel treating, copper and brass annealing, vitreous enamelling, glass annealing, baking japans, cores, bread, etc., on a large scale, are describe... View full abstract»

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  • Radio in Chile

    Publication Year: 1925 , Page(s): 462
    Request Permissions | Click to expandAbstract | PDF file iconPDF (886 KB)  

    Radio is very popular in Chile, it being estimated that 25,000 sets are in use at present, most of them being of the crystal type. Although sales are active, and it seems likely that the market will develop materially in the future, it is believed that the greatest future market will be for radio parts rather than complete sets. View full abstract»

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  • Purchased power as applied to plate glass manufacture

    Publication Year: 1925 , Page(s): 463 - 468
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1651 KB)  

    The paper gives some general statistics on plate-glass manufacture, and estimates that the present total electrical requirements of the industry in the United States, are about 350,000,000 kw-hr. per annum. About 60 per cent of this energy is purchased and is considered a very desirable load from the central station point of view, as the plants generally run almost continuously and shut down only ... View full abstract»

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  • Frequency multiplication principles and practical applications of ferro-magnetic methods

    Publication Year: 1925 , Page(s): 469 - 473
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1758 KB)  

    Introduction MANY of the principles involved in the multiplication of frequencies by the use of highly saturated iron cores have been established by early investigators in the field of radio engineering. A number of articles on the subject have been published by various investigators, although very little information about the performance of frequency multipliers under load conditions was found. View full abstract»

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  • Electrical installation inspections and tests in Austria, Rumania and Bulgaria

    Publication Year: 1925 , Page(s): 473
    Request Permissions | Click to expandAbstract | PDF file iconPDF (286 KB)  

    Testing and inspection requirements differ in these three countries as follows: In Austria, there is no organization charged with these duties, but only licensed electricians are permitted to make installations. In Bulgaria, a special controlling committee inspects and tests each installation before approving it for connection with the line, while in Rumania, where like inspections and tests are r... View full abstract»

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  • Failure of disk insulators on high-tension transmission lines

    Publication Year: 1925 , Page(s): 474 - 475
    Request Permissions | Click to expandAbstract | PDF file iconPDF (463 KB)  

    A PAPER under the above title was presented by the writer at the Pacific Coast Convention of the Institute in the summer of 1922, and was printed on page 740, Vol. XLI, 1922 Transactions of the Institute. This article and the included curves comparing the frequency of failure of the various disks of the assembly with the voltage gradient curve has been of sufficient interest to engineers connected... View full abstract»

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  • Broadcasting in Japan postponed

    Publication Year: 1925 , Page(s): 475
    Request Permissions | Click to expandAbstract | PDF file iconPDF (226 KB)  

    It was originally planned that broadcasting in Japan would begin on March 1, but according to a cable from Acting Commercial Attache Frank Rhea, Tokyo, this has been postponed at least two weeks. View full abstract»

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  • Electric lighting equipment on automobiles

    Publication Year: 1925 , Page(s): 476 - 480
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1306 KB)  

    The convenience and flexibility of electric lighting is the principle reason for the development of the present type of automotive electrical equipment. The conflicting requirements of good illumination for the drivers and the elimination of glare for the driver of the on-coming car have lead to the adoption of light directing devices according to specifications drawn up by the I. E. S. Lights con... View full abstract»

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  • Electrification planned by the paris-orleans railroad

    Publication Year: 1925 , Page(s): 480
    Request Permissions | Click to expandAbstract | PDF file iconPDF (301 KB)  

    It is expected that the electrification of the line from Paris to Orleans, the first important step in the electrification of the Paris-Orleans railway, will be completed during 1925. View full abstract»

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  • Factors affecting the design of D-C. motors for locomotives

    Publication Year: 1925 , Page(s): 481 - 489
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1608 KB)  

    The designer of motors for locomotive service is confronted with at least two limitations; space and weight. For large locomotives, the second limitation may not be of prime importance, but the first must be constantly in the mind of the designer. The paper gives a comparison between different types of motor mounting as regards the amount of power which may be developed in the available space with... View full abstract»

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  • Growth of demand for electrical equipment

    Publication Year: 1925 , Page(s): 489
    Request Permissions | Click to expandAbstract | PDF file iconPDF (299 KB)  

    Prior to 1910 the electric light and power industry in China was in an embryo stage. Practically all the plants which were supplied were of European manufacture and few, if any, turbo-generators had been considered. In 1910 an American company sold a 350-kw. turbo-generator to the Mukden Electric Light Co., the first to be supplied to China. Later, in the same year, an order was secured for a simi... View full abstract»

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  • Design of non-distorting power amplifiers

    Publication Year: 1925 , Page(s): 490 - 498
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1986 KB)  

    The paper deals with the problem of obtaining the maximum output possible from a given amplifier tube, while keeping the distortion down to a negligible amount. A tube can be rated for this purpose in terms of the watts output obtainable, when a sine wave voltage of as great an amplitude as can be advantageously utilized, is applied to the grid. This maximum sine wave output is very much less than... View full abstract»

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  • The single-phase induction motor

    Publication Year: 1925 , Page(s): 499 - 508
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1677 KB)  

    The operation of the single-phase induction motor is presented according to the crossfield theory as distinguished from the theory of oppositely rotating fields. The mathematics used require only a knowledge of algebra and trigonometry and no factors, such as crossfield iron loss and crossfield magnetizing current, are neglected. In addition to the derivation of the vector diagram, its transformat... View full abstract»

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  • Deterioration of impregnated cable paper subjected to temperature only

    Publication Year: 1925 , Page(s): 508 - 510
    Request Permissions | Click to expandAbstract | PDF file iconPDF (659 KB)  

    A report has been made on an investigation of the mechanical deterioration of impregnated cable paper when subject to various temperature tests which have been conducted at the Massachusetts Institute of Technology for a joint committee of the American Institute of Electrical Engineers, the National Electric Light Association and the Association of Edison Electric Illuminating Companies. An abstra... View full abstract»

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  • Discussion at Pacific Coast convention: Papers on Southern California Edison system

    Publication Year: 1925 , Page(s): 510 - 513
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1149 KB)  

    H. A. Barre: As you know, our initial problem was something very different from building a 220,000-volt line. We had the existing Big Creek Line. We didn't have time to build a new line; we had to get in and make that one work at a higher voltage to carry the additional amount of power that we had to transmit. That was quite a serious problem. View full abstract»

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  • Papers on corona

    Publication Year: 1925 , Page(s): 513 - 522
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3484 KB)  

    F. W. Peek, Jr.: It is my opinion that apparent discrepancies in the corona papers presented are not due to error in the different investigations, but rather to the difficulty of comparing different conditions. To illustrate what I mean by one example: An aluminum cable strung at Stanford in a grassy field and another strung at Pit after being dragged over the sharp lava rocks should be expected t... View full abstract»

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  • Discussion at Midwinter convention: The single-phase induction motor

    Publication Year: 1925 , Page(s): 522 - 523
    Request Permissions | Click to expandAbstract | PDF file iconPDF (625 KB)  

    V. Karapetoff: The problem treated by the author is quite old, and a complete absence of correlation with the work of previous investigators is rather deplorable. Thus, the whole set of papers and a voluminous discussion before the Institute in 1918 are entirely ignored, as well as the subsequent contributions to the theory of this class of machines. In 1921 I showed the equivalence of the two the... View full abstract»

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  • Temperature errors in induction watthour meters

    Publication Year: 1925 , Page(s): 523 - 525
    Request Permissions | Click to expandAbstract | PDF file iconPDF (941 KB)  

    H. B. Brooks: The paper by Kinnard and Faus is important and valuable, not only for its definite data and clear reasoning, but also because it is a tangible indication of the interest which is being taken in the question of the accuracy of metering. This interest reveals itself in many ways; for example, in the increasing attention which is being given to the ratio and phase-angle performance of i... View full abstract»

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  • The theory of probability and some applications to engineering problems

    Publication Year: 1925 , Page(s): 526 - 528
    Request Permissions | Click to expandAbstract | PDF file iconPDF (930 KB)  

    B. Jones: In the introduction to his paper Mr. Molina draws attention to the apparently little recognized value of the Calculus of Probabilities in engineering studies. Permit me to draw your attention to the extraordinary importance this calculus has acquired in modern mathematical physics as a means of developing the necessarily statistical expressions for the so-called laws of nature. View full abstract»

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  • Testing high-tension impregnated-paper — Insulated, lead-covered cables

    Publication Year: 1925 , Page(s): 528 - 541
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3799 KB)  

    D. W. Roper: The paper by Mr. Lee (the best discussion of the subject of testing high-voltage cable that has ever been presented to the Institute) contains a great amount of interesting information all drawn from the experience of one cable manufacturer. Some of the conclusions which he draws are, therefore, rather limited in their application as they refer solely to the particular type of insulat... View full abstract»

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  • Voice-frequency carrier telegraph system for cables: Polarized telegraph relays

    Publication Year: 1925 , Page(s): 541
    Request Permissions | Click to expandAbstract | PDF file iconPDF (334 KB)  

    J. J. Pilloid: The three papers, Metallic Polar-Duplex Telegraph System for Long Small-Gap Cables, Voice-Frequency Carrier Telegraph Systems for Cables and Polarized Telegraph Relays, describe two telegraph systems particularly adapted for use on long toll cables, and a relay which is an important feature of the two systems. By long toll cables we mean here cables several hundred, or a thousand or... View full abstract»

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

    Publication Year: 1925 , Page(s): 541 - 542
    Request Permissions | Click to expandAbstract | PDF file iconPDF (620 KB)  

    R. N. Nicely: In connection with the extensive toll cable program of the Bell System, it has of course, been highly desirable that satisfactory methods be made available for utilizing the cable facilities for telegraph as well as for telephone service. This has been accomplished by the development of the metallic polar-duplex telegraph system and the voice-frequency carrier telegraph system. Each ... 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