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Electrical Engineering

Issue 11 • Date Nov. 1948

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Displaying Results 1 - 25 of 55
  • [Front cover]

    Publication Year: 1948, Page(s): c1
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  • [Advertisement - Front inside cover]

    Publication Year: 1948, Page(s): c2
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  • Contents

    Publication Year: 1948, Page(s): 1
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  • [Advertisement]

    Publication Year: 1948, Page(s): 2A
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  • Highlights

    Publication Year: 1948, Page(s): 3A
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  • [Advertisement]

    Publication Year: 1948, Page(s):4A - 12A
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  • [Advertisement]

    Publication Year: 1948, Page(s):13A - 15A
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  • Origin of the electric motor

    Publication Year: 1948, Page(s):1035 - 1040
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5165 KB)

    Had it not been for the efforts of men like Davenport, De Jacobi, and Page, the benefits of the electric motor would not be enjoyed today. It is the purpose of this article to trace briefly the early history of the science of electro-motion and, in particular, to bring to light and to honor the inventor of the electric motor. View full abstract»

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  • New shunt and inductor designs

    Publication Year: 1948, Page(s): 1040
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  • Steady-state analysis of aircraft D-C generators

    Publication Year: 1948, Page(s): 1041
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (527 KB)

    The solutions to many steady-state d-c generator problems would be less complex if there were a simple yet accurate means for expressing analytically the machine's electromagnetic characteristics. Particularly, problems of voltage and load control and certain aspects of dynamo design might be approached with greater certainty if trial and error processes could be abandoned for a direct mathematica... View full abstract»

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  • Inductive co-ordination in rural areas

    Publication Year: 1948, Page(s): 1042
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (527 KB)

    The solution of numerous inductive co-ordination problems involving rural power and communication circuits has indicated that generators, transformers, and other equipment used on rural power lines should be designed to generate as little harmonic current as practicable. Noisy circuits caused by induction from power lines cannot, by any means, be cleared up by the telephone people without the co-o... View full abstract»

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  • Diode circuit analysis

    Publication Year: 1948, Page(s):1043 - 1049
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2660 KB)

    Diode circuits may be analyzed by a basic method less complex than methods now in use. The nonlinear tube characteristic is analyzed and an equivalent circuit is suggested to which most ordinary applications can be reduced. The method may be applied to various diode and multielement tube circuits, such as a diode modulator. View full abstract»

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  • Creep measurement with wire gauges

    Publication Year: 1948, Page(s): 1049
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  • Protection of the airplane main bus

    Publication Year: 1948, Page(s): 1050
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (579 KB)

    The large increase in installed power of the airplane electric system since just before World War II, and the greater dependence which is placed on it for safe operation of the airplane, have directed much thought to the subject of system protection. As a result of this, methods and equipment are now available for effective protection of the generator circuits up to the main bus. In most cases thi... View full abstract»

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  • The copper oxide rectifier

    Publication Year: 1948, Page(s):1051 - 1058
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7513 KB)

    More than 25 years have passed since the discovery of the properties of copper oxide for rectifying alternating current. During the intervening time much has been learned of the characteristics of the rectifier, and improved manufacturing methods have made possible a continually widening circle of application. From small-current low-voltage rectifiers, applications have grown to include extremes i... View full abstract»

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  • A polarized relay as an aircraft control element

    Publication Year: 1948, Page(s): 1059
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (566 KB)

    In order to be suitable for use as an aircraft control element a polarized relay must have characteristics enabling it to meet environmental conditions and performance requirements. The characteristics of a currently used polarized relay having single-pole double-throw normally open contacts, and an inherently well balanced floating armature supported by a torsional spring, may be summarized as fo... View full abstract»

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  • Line-fault locator using fault-generated surges

    Publication Year: 1948, Page(s): 1060
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1201 KB)

    The problem of locating faults on high-voltage transmission lines is an old one, but is becoming more important as distances grow longer and more lines are built through isolated mountain and desert areas. View full abstract»

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  • Mathematics for engineers — II: method of Graeco-Latin squares

    Publication Year: 1948, Page(s):1061 - 1063
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1624 KB)

    In this second part of a 3-part series, a method is described whereby time and effort in examining problems involving a number of variables may be reduced greatly by selecting only those combinations of greatest significance. It has been applied for four, five, and six variables, provided the number of values of each variable is one less than the number of variables. View full abstract»

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  • Standards of very small capacitance

    Publication Year: 1948, Page(s): 1063
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  • A 6-trace cathode-ray oscillograph

    Publication Year: 1948, Page(s): 1064
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    Testing of ordnance often requires the recording of high-speed steady-state and transient phenomena both in the field and the laboratory. The portable multichannel magnetic-string-type oscillograph is admirably suited for recording many signals simultaneously, but does not possess the high-frequency response, the high-input impedance, or the high sensitivity often required. View full abstract»

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  • 13,800-Volt distribution in the Bunker Hill mine

    Publication Year: 1948, Page(s): 1065
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB)

    The bunker hill mine ore body near Kellogg, Idaho, started as a prospect hole high on a mountainside in 1886. Since then the electrical development of the mine has followed closely the technological development of the electrical industry. View full abstract»

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  • Liquid dielectrics for transformers

    Publication Year: 1948, Page(s):1066 - 1071
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8342 KB)

    As liquid dielectrics, hydrocarbon oils have many desirable characteristics and one serious disadvantage — the fact that they are combustible. Although not as generally excellent as the oils, the askarels also are suitable for this use and, in addition, are fireproof. View full abstract»

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  • Plastics protect antennas

    Publication Year: 1948, Page(s): 1071
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  • True dielectric breakdown strength of cable papers

    Publication Year: 1948, Page(s): 1072
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (455 KB)

    The object of this study is to present a new unique way of controlling edge effect and thus obtain the true dielectric breakdown strength of electric cable insulating papers, to compare the dielectric strength of paper so determined with the dielectric strength of other materials and with the dielectric strength of built-up paper insulation, and to compare the dielectric strength of structures com... View full abstract»

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  • Electrical essay: 4-Terminal network

    Publication Year: 1948, Page(s): 1073
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Aims & Scope

This Periodical ceased publication in 1963. The current retitled publication is IEEE Spectrum.

Full Aims & Scope