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Electrical Engineering

Issue 2 • Date Feb. 1945

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Displaying Results 1 - 25 of 39
  • [Front cover]

    Page(s): c1
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  • [Front inside cover]

    Page(s): c2
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  • [Advertisements]

    Page(s): 1 - 10
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  • Contents

    Page(s): 1
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  • [Advertisements]

    Page(s): 1
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  • Technology in postwar expansion

    Page(s): 47 - 50
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    NOT so many years after photography was introduced to the world, George Eastman revolutionized the infant business by offering to do the developing of the negatives and the printing of the pictures in Rochester. He brought photography to the people with his slogan: “You press the button; we do the rest.” View full abstract»

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  • High-frequency heating of conductors and nonconductors

    Page(s): 50 - 57
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    TO heat electric conductors made of metals — iron, brass, aluminum, and so forth — the piece to be heated is surrounded by a coil carrying the high-frequency alternating current. This coil induces the heating currents in the work, and the process is called induction heating. The frequency used depends on the physical properties and dimensions of the piece to be heated. View full abstract»

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  • Aviation and the electrical engineer

    Page(s): 58 - 60
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    Rapid advances in aviation have created a whole series of new problems for electrical engineers and aviation designers. The electrical and aviation industries must work together to develop satisfactory aircraft electric equipment, standardize minimum requirements for such equipment, and educate members of both industries to comply with these standards. View full abstract»

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  • Rectifiers and inductive co-ordination

    Page(s): 60 - 64
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    NOISE induced from power-supply circuits into circuits used for transmission of speech or music is caused by the harmonic-frequency voltages and currents present in the power-system wave shape.1 The interfering effect of a foreign voltage on a telephone circuit depends on its frequency, increasing with frequency up to a certain value and then decreasing. The voltage induced in a telephone circuit by a given voltage or current on a power-supply circuit also depends on the frequency, the mutual relation or coupling being directly proportional to frequency. When the effect of harmonics present on the power circuits is considered, it is necessary to give due weight to both factors. The term “inductive influence” is used in discussing them. The inductive influence of a power-system voltage or current wave shape is measured in terms of “telephone influence factor,”2 abbreviated “TIF”, which factor takes into account the variation of both the interfering effect and coupling with frequency. Figure 1 shows two TIF curves, one designated 1935 and the other tentative 1941.2 The shape of the curve depends, of necessity, on the characteristics of the telephone instruments in use, and the change from the 1935 to the 1941 curve reflects the improvements that have been made in telephone instruments. The 1941 curve is just coming into use now, and the majority of the investigations made in recent years have been based on the 1935 curve. View full abstract»

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  • Electrical engineering in the postwar world: X — Goals in engineering education

    Page(s): 65 - 68
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    The engineering profession will find it hard to rise above its educational source, and there is no magic through which education can rise above its teachers, declares this educator. More emphasis on the humanistic studies, more time devoted to fundamental science, and a basic analysis of the engineering method furnish the framework of the undergraduate course he proposes. View full abstract»

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  • Grounding principles and practice II — Establishing grounds

    Page(s): 68 - 74
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    GROUNDING has become an everyday electrical term and a very common practice in electrical construction and operation. The primary function of most grounding is to increase safety for life and property. Its secondary function is to improve the operation and continuity of service of electric systems. These two functions are often complementary and compatible. View full abstract»

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  • Institute activities: Official nominees announced for 1945–46

    Page(s): 75
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  • Section

    Page(s): 75
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  • Personal

    Page(s): 75 - 76
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  • Obituary

    Page(s): 76 - 77
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  • Membership: Recommended for transfer

    Page(s): 78 - 79
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  • Of current interest: Bureau of ships creates electronics division

    Page(s): 80
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  • Industry: Three turbines scheduled for Mexican power plant

    Page(s): 80
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  • Postwar: FCC releases proposals for frequency allocation

    Page(s): 80
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  • Heated clothing tested on copper man

    Page(s): 81
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  • Education: University of Maryland to have Aeronautical school

    Page(s): 81
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  • Joint activities: United Engineering Trustees, Inc.

    Page(s): 82 - 84
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  • Library

    Page(s): 84 - 85
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  • Other societies

    Page(s): 85 - 86
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  • Letters to the editor

    Page(s): 86
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Aims & Scope

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

Full Aims & Scope