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Transactions of the American Institute of Electrical Engineers

Issue 6 • June 1934

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Displaying Results 1 - 25 of 35
  • List of Contributors

    Publication Year: 1934, Page(s): 849
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    Freely Available from IEEE
  • Table of contents

    Publication Year: 1934, Page(s):849 - 850
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    Freely Available from IEEE
  • Structure of Atoms and Molecules Electronic Theory or Valence

    Publication Year: 1934, Page(s):851 - 856
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1347 KB)

    A digest of present theories regarding the structure of atoms and molecules is presented herewith. In an article of this length it is impossible to show adequately how bulk properties of substances are related to atomic properties; the article is intended primarily as a general introduction to the subject, and for those wishing to delve deeper into the matter a list of references is given at the e... View full abstract»

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  • Engineers of the Next Generation

    Publication Year: 1934, Page(s):857 - 859
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (855 KB)

    As the social and economic significance of engineering becomes plainer every day, the world looks to the engineer of the future as a leader capable of shouldering broader social responsibilities. The organization of the Engineers Council for Professional Development is the first step in preparing the coming generation of engineers for the tasks ahead. This paper describes the formation, aims, and ... View full abstract»

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  • The "compandor"'-an aid against radio static

    Publication Year: 1934, Page(s):860 - 866
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2411 KB)

    One of the important conditions that must be met by any speech transmission system is that it should transmit properly a sufficient range of speech intensities. In long wave radio telephony, even after the speech waves are raised to the maximum intensity before transmission, there remain energy variations such that weak syllables and important parts of strong syllables may be submerged under heavy... View full abstract»

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  • Recent Developments in Suspension Insulators

    Publication Year: 1934, Page(s):867 - 870
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2564 KB)

    A recent development in the design of the cap and pin of suspension insulators, to enable compression principles of stress distribution to be incorporated, has made possible an increase from 6,000 lb to 11,000 lb in load as determined by time-load tests covering a period of 2 years. Also, fatigue failure caused by vibration has been found to occur in the metal part before the porcelain is affected... View full abstract»

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  • Factors Influencing the Insulation Co??rdination of Transformers-II

    Publication Year: 1934, Page(s):870 - 876
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5203 KB)

    Supplementing a previous paper, data given here verifies the co??rdination between transformer major insulation and standard edge gaps for surges of short duration. Insulation deterioration caused by high surge voltages is shown to occur at relatively constant voltages regardless of wave length or polarity. Direct strokes are Found to be the cause of principal damage, use of overhead ground wires ... View full abstract»

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  • Electronic Regulator for A-C Generators

    Publication Year: 1934, Page(s):877 - 881
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3835 KB)

    This paper describes circuits and operating details of an electronic device designed to provide, through field excitation control, a regulation of a-c generator voltage within a range of ??1/10 per cent. View full abstract»

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  • Flashover Voltages of Insulators and Gaps

    Publication Year: 1934, Page(s):882 - 886
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2959 KB)

    In an effort to clarify the confusion that has existed during past years regarding the flashover strength of insulators the A.I.E.E. lightning and insulator subcommittee* has been engaged, jointly with high voltage laboratories of several insulator manufacturers, in an investigation to determine and eliminate differences in insulator flashover data from different sources, and to obtain reliable fl... View full abstract»

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  • Load Totalizing in the New York Area

    Publication Year: 1934, Page(s):886 - 889
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2875 KB)

    A remote metering system operating over telephone lines to bring load indications directly to the office of the system operator from important stations in the metropolitan area is described in this paper. A high degree of accuracy has been achieved, and important operating economies are expected. View full abstract»

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  • Iron Armored Aerial Communication Cable

    Publication Year: 1934, Page(s):890 - 895
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1410 KB)

    This paper describes a study of the application of an iron armored aerial communication cable as an inductive co??rdination measure permitting a high voltage transmission line to occupy jointly for a distance of about 20 miles the same railroad right-of-way with telegraph and telephone circuits. Calculations are given indicating the induction to be expected on open wire communication circuits, and... View full abstract»

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  • The Suspension Insulator

    Publication Year: 1934, Page(s):895 - 898
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1672 KB)

    Improvements and strengths of suspension insulators which have been attained since the publication in 1931 of a paper by the present author are outlined in this paper. Details of the improvements which have been made since that time are discussed herein, and considerable data on the strength of suspension insulators of different types are given. View full abstract»

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  • Radio Influence Insulator Characteristics

    Publication Year: 1934, Page(s):899 - 903
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2747 KB)

    Insulators on high voltage lines may cause radio interference by the arcing of the insulator charging current. A copper oxide glaze for new insulators has been developed to prevent this arcing; treatment of old insulators with special compounds to exclude air is reported as helpful. Suspension insulators are found to require no treatment. View full abstract»

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  • Voltage Regulation and Load Control

    Publication Year: 1934, Page(s):903 - 909
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2487 KB)

    Some of the problems involved in supplying electric power to the business sections of large metropolitan areas are dealt with in this article which describes the development and operation of new methods of voltage regulation and load control by means of which improved conditions are being obtained on the distribution system in New York City. View full abstract»

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  • Encouraging Initiative in the Engineering Student

    Publication Year: 1934, Page(s):910 - 914
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1321 KB)

    Engineering education today is being examined from within as well as from without, with the object of adapting it to meet more adequately the changing demands of a profession broad and diverse although relatively young. With no precedent or past experience to serve as a guide, engineering education necessarily has developed by its own efforts through trial and experiment. This describes the educat... View full abstract»

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  • Split Winding Transformers

    Publication Year: 1934, Page(s):914 - 922
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2922 KB)

    A discussion of the application of and advantages derived from the use of split winding transformers for separating bus sections and For avoiding undue concentration of power from high voltage lines. An explanation is given of the characteristics of these units with respect to the reactances and the effect of load unbalance on the windings. View full abstract»

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  • A New Porcelain Post Insulator

    Publication Year: 1934, Page(s):922 - 925
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1603 KB)

    A new porcelain post insulator for transmission lines, which is free from radio effect at its operating voltage, is described in this paper. Capacitance measurements are utilized to determine and rate the radio characteristics. Other points of design are described, such as improved leakage path to resist arcing in contaminated atmosphere, greater height to avoid grounding by birds, and increased r... View full abstract»

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  • Grid Controlled Rectifiers and Inverters

    Publication Year: 1934, Page(s):926 - 935
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2091 KB)

    The rectifier and inverter characteristics of the grid controlled mercury arc rectifier o the 6-phase and 12-phase types are considered in this paper. The analysis of rectifier circuits has been extended to cover the effect of grid control on the output voltage, power factor, eficiency, wave forms, and other characteristics; and the characteristics of the grid controlled rectifier operating as an ... View full abstract»

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  • Selection and Performance of Suspension Insulators

    Publication Year: 1934, Page(s):936 - 942
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1583 KB)

    Some of the methods used in selecting and checking suspension insulators during the past 15 years on a large electric power transmission system comprising some 3,000 miles of steel tower lines, most of which operate at 132,000 volts, are outlined in this paper. The results obtained through various tests, the use of these results as a guide for insulator selection, and actual performance and expect... View full abstract»

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  • Calibration of the Sphere Gap

    Publication Year: 1934, Page(s):942 - 948
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1411 KB)

    A series of sparkover voltage calibration tests on sphere gaps using spheres of various sizes up to 200 cm in diameter are reported in this paper. Tests were made with gap spacings ordinarily used in pratice, and with 60-cycle and both positive and negative impulse voltages. Since these tests as well as those of other investigators show that some of the A.I.E.E. standard sphere gap calibration cur... View full abstract»

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  • Some New Developments in Supervisory Control

    Publication Year: 1934, Page(s):949 - 952
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1841 KB)

    New developments in the direct selection system of supervisory control are described in this paper which also touches upon the systems and use of codes and gives examples of the use and operation of equipment. View full abstract»

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  • Selsyn Instruments for Position Systems

    Publication Year: 1934, Page(s):953 - 960
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1535 KB)

    Selsyn instruments are miniature salient pole synchronous machines excited by alternating current. They are used to transmit electrically, to one or several of the instruments acting as the receivers, the rotation given to another of the instruments acting as a transmitter. This paper presents a study of the behavior and accuracy of these instruments at standstill and under synchronous rotation gi... View full abstract»

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  • A Compensated Automatic Synchronizer

    Publication Year: 1934, Page(s):960 - 968
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3453 KB)

    A relay for automatically synchronizing rotating machines has been developed which uses vacuum tubes to reduce mechanical adjustments, and which gives the closing indication at a constant time in advance of synchronism. This latter quality is shown to be required for rapid synchronizing with acceptable accuracy, in the absence of extremely accurate speed control. The theoretical requirements of su... View full abstract»

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  • High Voltage Insulators

    Publication Year: 1934, Page(s):969 - 973
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6397 KB)

    In this description of the manufacturing processes for suspension insulators, from design and research to finished product, is given a comprehensive list of the laboratory equipment required for adequate testing. Methods of testing for defects and the manner of assembly are sketched, and the need for further standardization is mentioned. View full abstract»

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  • A Telemeter With Pilot Coil Transmitter

    Publication Year: 1934, Page(s):974 - 976
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1549 KB)

    The feature of the current-type telemeter described in this paper is the pilot coil which acts as a detector of load changes. View full abstract»

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