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Transactions of the American Institute of Electrical Engineers

Volume 50: 1931

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Displaying Results 1 - 25 of 75
  • Index of authors

    Publication Year: 1931, Page(s):829 - 830
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    Freely Available from IEEE
  • Report of the Board of Directors for the Fiscal Year Ending April 30, 1931

    Publication Year: 1931, Page(s):817 - 828
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    Freely Available from IEEE
  • Harmonic Generation by Means of Grid-Circuit Distortion

    Publication Year: 1931, Page(s):811 - 816
    Cited by:  Papers (1)
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    The usual vacuum tube harmonic generators are fundamentally high distortion amplifiers operated under conditions of grid bias and plate voltage which, to distort the input voltage wave, utilize the non-linear relation between plate voltage and plate current. This paper gives the result of an investigation into the possibilities of using the non-linear grid voltage-current characteristic to produce... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):809 - 810
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  • Effect of Transient Voltages on Power Transformer Design-III Non-Resonating Auto-Transformer

    Publication Year: 1931, Page(s):803 - 809
    Cited by:  Papers (5)
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    Transient voltage phenomena within auto-transformers differ from those in transformers, because in the former there are two points of the winding connected to independent transmission lines. This allows independent variation of the potential of these points. When a surge comes to an auto-transformer from one line only, the other line acts practically as a ``solid ground'' for internal oscillations... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):798 - 802
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  • Steady Flow of Heat in Large Turbine-Generators

    Publication Year: 1931, Page(s):782 - 798
    Cited by:  Papers (10)
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    The present paper represents an attempt at a reasonably complete solution of the heat flow in large turbine generators, where the temperature drops through the various iron paths are of consequence. The solution of two-dimensional problems of heat flow is obtained by means of ``equivalent thermal circuits.'' The approximations involved in this method are discussed in two appendixes where exact sol... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):778 - 781
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  • The Pulling into Step of a Salient-Pole Synchronous Motor

    Publication Year: 1931, Page(s):769 - 778
    Cited by:  Papers (20)
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    A synchronous motor started as an induction motor must pass through an electro-mechanical transient after the field circuit is supplied with electrical excitation in order to change its action from that of an induction motor to that of a synchronous motor. The calculation of this problem has been difficult because the differential equation of motion is of a non-linear type of which no analytical s... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):767 - 768
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  • Induction Motor Slot Combinations Rules to Predetermine Crawling, Vibration, Noise and Hooks in the Speed-Torque Curve

    Publication Year: 1931, Page(s):757 - 767
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2194 KB)

    A theory of coexisting stationary and rotating slot openings is developed with the aid of ``revolving permeances,'' and the magnitude and speed of the parasitic fluxes due to the slot openings and the fundamental current density wave are found. It is shown that the interaction of the fundamental flux and a parasitic flux of the same order of magnitude as the fundamental flux causes the vibrations,... View full abstract»

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  • Mercury-Arc Rectifier Research

    Publication Year: 1931, Page(s):744 - 756
    Cited by:  Papers (7)
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    First Page of the Article
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  • Discussion

    Publication Year: 1931, Page(s):741 - 743
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  • Magnetic-Circuit Units as Adopted by the I. E. C.

    Publication Year: 1931, Page(s):737 - 741
    Cited by:  Papers (2)
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    The decisions of the International Electrotechnical Commission (I. E. C.) at Oslo in July 1930, with respect to international magnetic units and unit names, are briefly reviewed. So far as concerns the c. g. s. magnetic units, the decisions appear likely to meet with general favor; but the series is incomplete and might advantageously be supplemented by at least one name?? that for the c. g. s. un... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):732 - 736
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  • Studies in Non-Linear Circuits

    Publication Year: 1931, Page(s):724 - 732
    Cited by:  Papers (10)
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    The series circuit consisting of an inductance L, capacitance C, resistance R, and a source of alternating electromotive force, where the circuit elements are all linear, is regarded as a special case of a more general type of circuit in which L, C, and R may be functions of the current or other variables. The practical importance of these non-linear circuits is noted and some of their properties ... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):722 - 723
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  • The Application of the Helical Groove to Slip-Rings and Commutators

    Publication Year: 1931, Page(s):718 - 722
    Cited by:  Papers (1)
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    An outline is given of experiments showing that a sliding-brush-slipring contact, even with well seated brushes, only makes electrical contact at a comparatively small number of minute spots at any given instant. Differences are shown in the properties of the contact film formed on a grooved and on a plain slip ring. Commerical applications of the helical grooves are mentioned. It is shown that a ... View full abstract»

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  • Commutation and Current Collection in Hydrogen

    Publication Year: 1931, Page(s):714 - 717
    Cited by:  Papers (2)
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    This paper describes a number of tests on commutator machines and slip-rings operating in hydrogen. The results seem to warrant the following conclusions: (1) A commutator machine designed and adjusted for good commutation in air will operate satisfactorily and give good brush life in hydrogen. (2) If a commutator machine mutst spark in hydrogen, the brush life may be increased many times by keepi... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s): 713
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  • Traffic Control by Light Beams For Major-Minor Intersections

    Publication Year: 1931, Page(s):708 - 713
    Cited by:  Papers (2)
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    The object of this traffic controller is to keep the signal green on the major street, and to give the green signal to the minor street only when requested. The minor street vehicle can always get the green signal after a short wait, while the major street receives green light for as much extra time as the minor street traffic permits. Two experimental horizontal beam installations, which accompli... View full abstract»

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  • Discussion

    Publication Year: 1931, Page(s):705 - 707
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  • Fundamental Properties of Impregnated Paper

    Publication Year: 1931, Page(s):699 - 704
    Cited by:  Papers (8)
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    First Page of the Article
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  • The conductivity of insulating oils-II

    Publication Year: 1931, Page(s):692 - 698
    Cited by:  Papers (10)
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  • Discussion

    Publication Year: 1931, Page(s):688 - 691
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