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Journal of the A.I.E.E.

Issue 7 • July 1930

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Displaying Results 1 - 25 of 43
  • Some activities and services open to members

    Publication Year: 1930, Page(s): 1
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  • Table of contents

    Publication Year: 1930, Page(s): 1
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  • Lecturers for the Institute

    Publication Year: 1930, Page(s): 511
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  • Some leaders of the A. I. E. E.

    Publication Year: 1930, Page(s): 512
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  • Abridgment of an electron tube telemetering system (part I)

    Publication Year: 1930, Page(s):513 - 516
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2326 KB)

    The paper describes a varying frequency telemetering system which employs an electron tube beat frequency oscillator, the frequency of which is controlled by a small condenser mounted upon the movement of the instrument, the reading of which is to be transmitted. The reading is reproduced at the receiving end by a frequency meter having a scale corresponding to that of the transmitting meter. When... View full abstract»

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  • Abridgment of vertical shaft 25,000-kv-a., synchronous condensers: 25-Cycle, 500-rev. per min., outdoor type units for Toronto leaside transformer station

    Publication Year: 1930, Page(s):517 - 519
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1284 KB)

    This paper is descriptive of the 25,000-kv-a., 13,200-volt, 25-cycle, 500-rev. per min., vertical shaft, outdoor type, self-starling, synchronous condensers installed in the Toronto-Leaside Transformer Station, of the Hydro-Electric Power Commission of Ontario. Some of the special problems encountered because of the vertical-shaft, outdoor type arrangement, are discussed. In the appendix, the auto... View full abstract»

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  • Buried distribution type transformers

    Publication Year: 1930, Page(s):519 - 522
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1409 KB)

    This paper describes the preliminary tests, design, and insulation of distribution transformers located underground, instead of overhead on poles, and in direct contact with the earth, in contrast with those located in expensive underground vaults. The preliminary tests indicating the feasibility of such a method of installation are outlined. The special transformer case used, including such detai... View full abstract»

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  • Auxiliaries for high-voltage D-C. multiple unit cars

    Publication Year: 1930, Page(s):523 - 527
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3663 KB)

    The selection and application of auxiliary electrical devices on a high-voltage multiple unit car is of almost as much importance as the application of the main traction apparatus and requires careful consideration. This paper contains a description of the engineering features as worked out for electrified suburban lines operating on 1500-volt and 3000-volt systems. The control circuits have becom... View full abstract»

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  • Abridgment of 1000-kw. automatic mercury arc rectifier substation of the union railway company of New York

    Publication Year: 1930, Page(s):528 - 531
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2295 KB)

    A 1000-kw. 625-volt automatic mercury arc rectifier substation, installed by the Union Railway Company of New York, in May, 1929, is described in general in this paper together with the account of the automatic and remote control features of the substations. The principle reasons for the adoption of the mercury arc rectifier are mentioned and operating and performance data for the first ten months... View full abstract»

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  • The status of the young engineer: President's address

    Publication Year: 1930, Page(s):532 - 534
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB)

    A Lifetime's work has been primarily with students of electrical engineering, and close connection has been enjoyed with many of them, not only immediately, but frequently for many years after graduation from college. It is natural, therefore, that it is counted a high privilege to have been brought closely into touch with their problems and their aspirations. View full abstract»

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  • End-connection reactance of synchronous machines

    Publication Year: 1930, Page(s):535 - 538
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    Much has been published lately on the subject of armature reaction, and the designer is now able to predetermine performances with a considerable degree of accuracy; but many of the assumptions made for the purpose of obtaining a mathematical solution to a difficult problem have tended to obscure rather than elucidate the physical conception of armature reactance. This may be of no serious importa... View full abstract»

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  • Abridgment of dancing conductors

    Publication Year: 1930, Page(s):538 - 541
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (941 KB)

    The phenomenon of dancing cables is discussed; the merits of different theories are considered, reference being made to the theory that vibrations of small amplitude but relatively high frequency travel along the line to points where the constants of the line change, as at dead-ending insulators, and there reflect and combine into slower waves of great amplitude. The suggestion is made that much e... View full abstract»

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  • Abridgment of radio telephone service to ships at sea

    Publication Year: 1930, Page(s):542 - 546
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2484 KB)

    The paper discusses the American end of the ship-to-shore radio telephone system and the connecting equipment on board the SS. Leviathan. There is given an outline of previous work in this field and of the technical problem involved in the use of short waves. The station facilities which have been provided for this service on the New Jersey coast are described also the equipment which has been dev... View full abstract»

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  • Abridgment of reduction of eddy current losses by the inverted turn transposition and the twisted lead transposition

    Publication Year: 1930, Page(s):546 - 550
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (989 KB)

    The first section of the paper contains a brief review of the general theory underlying the determination of extra copper losses in armature windings carrying alternating current. Simplified methods of calculation are then described. The second part extends the study of the inverted turn transposition to the special case of three-phase windings, with two phases connected in series to form a single... View full abstract»

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  • Abridgment of rural line construction in Ontario

    Publication Year: 1930, Page(s):550 - 553
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2631 KB)

    This is a description of a large rural distribution system with some 4800 mi. of primary circuit. The history of the system is given from its inception as a few scattered extensions of town systems up to the present. The paper covers in detail the various forms of construction in use with the reason for their adoption. Comparison of lines are given with various span lengths and voltages. An 8000/4... View full abstract»

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  • Abridgment of the 220,000-volt system of the hydo-electric power commission of Ontario

    Publication Year: 1930, Page(s):554 - 557
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1465 KB)

    Power requirements of the Commission's 25-cycle Niagara System are outlined. Preliminary studies in connection with the choice of transmission voltage, location of terminal transformer station, etc., are discussed, together with the technical studies involved in the design of a system for transmitting 260,000 hp. 230 miles at 220,000-volts, and transforming same at the receiving end, for interconn... View full abstract»

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  • Abridgment of directional ground relays

    Publication Year: 1930, Page(s):558 - 561
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (915 KB)

    Less than four years ago there appeared the following summary of protective relay practise for transmission systems: “Electrical faults on a transmission or distribution system consist mainly of short circuits and grounds. The protective scheme is primarily designed to operate on values of current caused by short circuits between phases…. If the neutral of the system is grounded, the... View full abstract»

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  • Abridgment of auxiliary circuits for high-voltage D-C. Motor car equipments

    Publication Year: 1930, Page(s):562 - 566
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1894 KB)

    The increasing demand for frequent and rapid transportation on both suburban and other railways has brought to the fore the multiple unit motor car. The steps taken in the development of the auxiliary equipment for the multiple unit motor coach are quite interesting, and have been made the subject of this paper. The first part of the paper is devoted to cars equipped with apparatus for converting ... View full abstract»

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  • Abridgment of the transmission characteristics of open-wire telephone lines

    Publication Year: 1930, Page(s):566 - 570
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Values of the primary transmission constants R, L, G, and C for open-wire telephone lines are presented, and the factors which affect these constants in practice are discussed. Consideration is then given to the constants which are of principal interest in telephone work, namely, attenuation, characteristic impedance, phase constant, and velocity of propagation. Data regarding these characteristic... View full abstract»

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  • Abridgment of standards of insulation and protection for transformers

    Publication Year: 1930, Page(s):570 - 573
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1350 KB)

    This paper presents the reasons and evidence which have influenced the authors to favor the proposed recommendations on relation of transformer insulation to adjacent line insulation set forth in a companion paper by Messrs. Montsinger and Dann. The paper first outlines the principal considerations which govern the determination of transmission line insulation on one hand, and transformer insulati... View full abstract»

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  • The Summer convention at Toronto

    Publication Year: 1930, Page(s): 574
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  • Pacific Coast convention: Splendid technical program and engrossing entertainment with an opportunity to see then orthwest

    Publication Year: 1930, Page(s): 574
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (231 KB)

    The Convention will be held Sept. 2–5, this year at Portland, Oregon, with headquarters in the Multnomah Hotel, and members are urged to plan their vacations to include its opportunities. The Northwest is rapidly becoming a very popular summer playground, and Portland, situated in the center of this recreation area, is a convenient starting center from which to travel to the many points of ... View full abstract»

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  • Election of A. I. E. E. officers

    Publication Year: 1930, Page(s): 575
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  • Edison honored by Argentine

    Publication Year: 1930, Page(s):575 - 576
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1609 KB)

    A gold medal typifying the gratitude of electrical engineers and scientists of Argentine and their affection, for Thomas Alva Edison, as well as commemorative of the Golden Jubilee of his incandescent lamp, was presented to Mr. Edison on June 20, at his East Orange laboratory, by William A. Reece of Buenos Aires, President of General Electric, S. A., of Argentine, who acted as the representative o... View full abstract»

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  • Architectural course for illuminating engineers

    Publication Year: 1930, Page(s):575 - 576
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (305 KB)

    Beginning Monday, September 8, courses will be held under the auspices of Columbia University, covering the various departments of architecture for illuminating engineers. These courses will continue with on an average of five sessions a day through Friday September 12th, the respective dates including the treatment of topics as follows: September 8 How the Architect Designs; Ancient, Greek and Ro... 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