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American Institute of Electrical Engineers, Transactions of the

Volume 54: 1935

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Displaying Results 1 - 25 of 27
  • 1935 Index - Electrical Engineering and Transactions

    Publication Year: 1935 , Page(s): 1426 - 1444
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  • Membership

    Publication Year: 1935 , Page(s): 1425
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  • Letters to the Editor

    Publication Year: 1935 , Page(s): 1421 - 1425
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  • Future AIEE Meetings

    Publication Year: 1935 , Page(s): 1411
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  • News of Institute and related activities

    Publication Year: 1935 , Page(s): 1408 - 1421
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  • A New Trigger Circuit For Closing a Switch

    Publication Year: 1935 , Page(s): 1405 - 1407
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    An electronic device is described for controlling the closing of a relay or switch at a predetermined point on the wave form of an a-c source. Current For closing the relay is controlled by a gas filled triode, the firing of which is obtained by the distorted wave of a multivibrator. The output of the multivibrator is made to change phase with reference to the a-c voltage wave. The device is usefu... View full abstract»

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  • Lightning Protection of Distribution Transformers

    Publication Year: 1935 , Page(s): 1400 - 1405
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    Data on the results of lightning protection for distribution transformers on the system of the Georgia Power Company have been compiled, to determine the improvement resulting from changes which have been made, particularly the interconnection of the ground leads of the primary arrester with the transformer secondary neutral. The data indicate that such interconnection has not produced all the ben... View full abstract»

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  • Discharge Currents in Distribution Arresters

    Publication Year: 1935 , Page(s): 1395 - 1399
    Cited by:  Papers (5)
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    With a view to augmenting the meager data available on the discharge currents through lightning arresters on electric power distribution circuits, the investigation reported in this paper, which covered 4 power systems of various voltages and in different sections of the country, was undertaken. Over the range of circuit voltages involved rating seemed to have(4 to 24 kv) voltage on the discharges... View full abstract»

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  • Pull-In Characteristics of Synchronous Motors

    Publication Year: 1935 , Page(s): 1385 - 1395
    Cited by:  Papers (17)
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    The differential analyzer has proved its worth in solving various types of difficult problems, of which the determination of the pull-in characteristics of salient pole synchronous motors is typical; but even with the aid of this device it has been necessary in solving this problem to make several simplifying assumptions. The differential analyzer recently completed at the University of Pennsylvan... View full abstract»

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  • I.E.C. Adopts MKS System of Units

    Publication Year: 1935 , Page(s): 1373 - 1384
    Cited by:  Papers (3)
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    At its plenary meeting of June 1935 at Scheveningen-Bruxelles, the International Electrotechnical Commission unanimously adopted the meter-kilogram-second (mks) or Giorgi system of units, 15 of the 25 constituent countries being represented. In this paper the principal historical antecedents of this action by the I.E.C. are outlined, and its principal import to electrical engineering is indicated.... View full abstract»

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  • Improvements in Communication Transformers

    Publication Year: 1935 , Page(s): 1367 - 1373
    Cited by:  Papers (1)
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    The rapidly advancing art of electrical communication and the increasingly wide of its applications have required marked improvements in the transformers used in communication circuits. These improvements, achieved partly through advances in design and partly through improvements in the constituent materials, are discussed in this paper. View full abstract»

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  • Self Excitation of a Frequency Converter

    Publication Year: 1935 , Page(s): 1359 - 1366
    Cited by:  Papers (1)
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    After a general discussion of the phenomenon of self excitation of a-c machines, a specific case of 3 phase self excitation of a Scherbius machine is treated. Such a machine is used in the regulating set of a variable-ratio frequency converter for inherently constant power transfer, the operating features of which are described. Under certain conditions this converter may be subject to the danger ... View full abstract»

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  • Research work in magnetics-1933-34

    Publication Year: 1935 , Page(s): 1354 - 1359
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    A review of the research work which has been done in the field of magnetics during 1933 and 1934 is contained in the articles and papers referred to in a comprehensive bibliography which has recently been prepared. In this bibliography, which is divided into 31 sections and contains 211 items, publications of all countries are considered. The list should be of considerable value to those intereste... View full abstract»

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  • Silicon Steel in Communication Equipment

    Publication Year: 1935 , Page(s): 1348 - 1353
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    Steel containing small amounts of silicon has come into wide use as a magnetic core material. In this paper the different grades of silicon steel, and other magnetic materials such as the nickel-iron alloys, are discussed with particular reference to the selection of the most satisfactory alloy for the various applications in communication equipment, which includes transformers for audio frequenci... View full abstract»

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  • The ``Biway'' System of Electric Platforms for Mass Transit

    Publication Year: 1935 , Page(s): 1340 - 1347
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    This paper describes the ``biway'' system of mass transit by continuously moving electrically operated platforms which is cited as being suitable for use in the congested sections of large cities. It is planned to have 2 adjacent moving platforms, one of which operates continuously at a speed of about 15 miles per hour, the other of which varies between standstill and the speed of the continuously... View full abstract»

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  • Load Losses in Salient Pole Synchronous Machines

    Publication Year: 1935 , Page(s): 1332 - 1340
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    The short circuit test of a salient pole synchronous machine in which rated armature current is being circulated is conventionally used for determining the load loss. In certain cases, it is necessary also to know the load losses when the machine is operated at rated conditions of voltage, current, and power factor. Methods for predetermining the short circuit losses are given in detail in this pa... View full abstract»

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  • The Engineering Development of Electrochemistry and Electrometallurgy

    Publication Year: 1935 , Page(s): 1320 - 1331
    Cited by:  Papers (1)
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    Some notes on the engineering development of electrochemical and electrometallurgical industries are given in this paper, with particular attention to progress of these industries in France. A discussion of the general problem of supplying electric power to these industries is followed by data on the development of certain processes which significantly illustrate ``direct uses'' of electricity in ... View full abstract»

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  • Effect of Total Voltage on Breakdown in Vacuum

    Publication Year: 1935 , Page(s): 1315 - 1320
    Cited by:  Papers (14)
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    The results of a series of high voltage breakdown tests between metal electrodes in high vacuum are reviewed, with consideration of the observed inverse relation between cathode gradient at breakdown and gap length. This leads to the conclusion that the current that flows between electrodes as the conditions for high voltage breakdown are approached must involve positive ions from the anode. The d... View full abstract»

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  • Measurement Of Telephone Noise and Power Wave Shape

    Publication Year: 1935 , Page(s): 1307 - 1315
    Cited by:  Papers (15)
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    Since the original introduction of devices for measuring or rating the wave shape of power system currents and voltages in terms of their influence on exposed telephone circuits, much additional work on this problem has been done, the results of this work are reported in this paper. In part I, a curve of relative interfering effects based upon recent studies is presented, the characteristics of a ... View full abstract»

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  • Segregation of Losses in Single Phase Induction Motors

    Publication Year: 1935 , Page(s): 1302 - 1306
    Cited by:  Papers (18)
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    Methods of segregating the load losses in single phase and capacitor induction motors are presented in this paper. Segregation of losses affords a means for checking the accuracy of input-output tests, and is valuable in comparing motors of various designs. View full abstract»

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  • Breakdown Curve for Solid Insulation

    Publication Year: 1935 , Page(s): 1300 - 1301
    Cited by:  Papers (22)
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    A volt-time breakdown curve for solid insulation, constructed from test data obtained with the use of square edged electrodes, is given in this paper, considerably extending the range of information available on this subject. View full abstract»

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  • Magnetic Alloys of Iron Nickel, and Cobalt

    Publication Year: 1935 , Page(s): 1292 - 1299
    Cited by:  Papers (1)
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    The unexpected magnetic propertis of certain alloys of iron and nickel discovered some 20 years ago led to a thorough study of the entire range of iron-nickel alloys. The results of this study were so encouraging that alloys of these metals with cobalt, the only other ferromagnetic metal, also were studied, as well as various alloys of these metals with small amounts of non-magnetic metals added. ... View full abstract»

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  • Recent Progress in Dielectric Research

    Publication Year: 1935 , Page(s): 1288 - 1291
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    Research in the several fields intimately involved in improving the formulation and application of electrical insulating materials is continuing with unrelenting efforts. The following summary of some of the current (1934-35) results indicates something of the scope and significance of this work. View full abstract»

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  • Friendship and the Engineer

    Publication Year: 1935 , Page(s): 1287
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  • In This Issue

    Publication Year: 1935 , Page(s): 1286
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