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Electrical Engineering

Issue 8 • Date Aug. 1958

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Displaying Results 1 - 25 of 61
  • [Front cover]

    Page(s): c1
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    Freely Available from IEEE
  • Contents

    Page(s): c2
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  • Contents

    Page(s): 1A
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  • [Advertisement]

    Page(s): 2A
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  • Contents

    Page(s): 3A
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  • [Advertisement]

    Page(s): 4A - 17A
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  • Project EHV

    Page(s): 669 - 674
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    THE GENERAL ELECTRIC Extra-High-Voltage Project (called “Project ehv” for short) involves the design, construction, and operation of a complete a-c transmission system which will carry power at voltages from 460 to 750 kv. This system will be a prototype of future extra-high-voltage systems. Data obtained from the system will be integrated with analytical studies, model investigations, and laboratory research in all interested components of the participating companies. View full abstract»

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  • Demands of an explosive era

    Page(s): 674 - 680
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    Today's compelling need is that of absorbing the impact of science and technology for the common good. This is a responsibility of all of us, because each advance affects the whole spectrum of our society and its institutions. The essential requirement is an enlightened citizenry, prepared to submerge individual interests in the group interest and to orient to new values when and as necessary. View full abstract»

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  • Dielectric strength and voltage life of polyethylene

    Page(s): 681
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    AMONG the most promising types of material for insulating high-voltage cables are those in the polyethylene family. Since its introduction around 1940, polyethylene has been used successfully for submarine telegraph and telephone cable, for high-frequency coaxial communication cable, and for multiconductor control cables. It has also been used, in increasing quantities, for high-voltage cable. Its application in 5,000-volt circuits has been accepted by the Insulated Power Cable Engineers Association for some time, and present IPCEA ratings extend to 15,000 volts. There are appreciable amounts of 15,000-volt polyethylene-insulated power cable in use, both in this country and in Europe. Beyond this, there are scattered installations for systems up to 34,500 volts, and manufacturers expect to push the limits even higher. View full abstract»

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  • Today's challenge to engineering initiative

    Page(s): 682 - 685
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    Our profit economy requires, for continued expansion, a progressive lowering of unit production costs that can be translated into lower prices. This means improved technology and a righting of the balance between wages and prices. View full abstract»

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  • Ecpd accreditation of engineering curricula

    Page(s): 686 - 688
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    The process of accreditation contributes to engineering education, thus to the profession as a whole, by insuring not only adequate curricula, but also the general improvement of all curricula. The history and operation of the ECPD Education and Accreditation Committee are described. View full abstract»

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  • Frequency response of a nonlinear closed-loop system

    Page(s): 689
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    THIS ARTICLE PRESENTS two general concepts which are very valuable in analyzing nonlinear servomechanisms. A graphical procedure is introduced by which the frequency response of a nonlinear closed-loop system can be determined from the describing function. The theory is even valid for the general describing function which is both amplitude and frequency dependent (Fig. 1). View full abstract»

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  • Electron tube evaluation for guided missile applications

    Page(s): 690 - 692
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    Excitation of a tube resonance for prolonged periods has proved a valuable aid in evaluating tubes for guided missile applications. Electrical and optical examination before and after vibration, and changes in the noise output spectrum are the basis for this evaluation. View full abstract»

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  • The 115-kv, 1 million kva gas-filled breaker

    Page(s): 693
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    A 115-KV CIRCUIT BREAKER of moderate interrupting capacity designed to meet some special and definite applications has long been deemed desirable on the transmission system of the Gulf Power Company. Consequently, when the gas-filled (sulfur-hexa-fluoride) Type 1150-SF-1000 power circuit breaker rated for 115-kv, 1 million kva service became available, this utility company agreed to purchase three in order to obtain service experience and to permit staged field tests for comparison with test results obtained in the High Power Laboratory. View full abstract»

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  • Delete john wood!

    Page(s): 694 - 695
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    An attempt to clear out some dead “Wood” from the early history of electrical conduction placed there by a spare-time historian. View full abstract»

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  • Instrumentation for a boiling water reactor

    Page(s): 696 - 698
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    A description is given of the instrumentation for the Vallecitos Boiling Water Reactor, a small-scale power reactor supplying steam to a turbine operated by the Pacific Gas & Electric Company as part of their generating facilities. An attempt has been made in the design of the plant to keep the instrumentation as simple as possible. View full abstract»

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  • Mechanism for nontracking organic insulations

    Page(s): 699
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    MOST ORGANIC INSULATIONS are not suitable for high voltage applications in contaminated atmospheres. Under surface arcing conditions, the organic constituents of the insulation decompose to form carbonaceous paths and the apparatus will fail by progressive creepage tracking. This article describes a proposed internal oxidation mechanism to eliminate formation of carbonized tracks upon exposure to surface electrical arcs. View full abstract»

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  • Determination of optimum transmission voltage

    Page(s): 700 - 703
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    Many utilities, faced with the problems of expansion, have initiated long-range studies to evaluate the possibilities of using extrahigh transmission voltages, such as 345 kv. In this article, 345-kv systems are compared with the more commonly used 138-kv systems on the basis of right-of-way requirements, reliability of operation, and cost. View full abstract»

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  • Fundamentals of infrared

    Page(s): 704 - 706
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    Infrared has emerged in the last decade from the sanctuary of the research laboratory into the domain of practical applied science. It is hoped the basic information presented will stimulate further interest in a field of great potential value. View full abstract»

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  • Six-channel multiplex for submarine cable telegraphy

    Page(s): 707
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    THE RICHLY CULTIVATED CARIBBEAN area has imposed ever-increasing demands upon communication facilities to North America. To serve this market place and crossroads of transportation, the Western Union Telegraph Company operates three submarine telegraph cables between Havana, Cuba, and Key West, Fla., an average distance of 101 nautical miles. Originally operated duplex in a differential polar relay arrangement, each cable was capable of sustaining a 3-channel time division multiplex at a signaling speed of 50 cycles per second. View full abstract»

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  • Digital computers for distribution systems

    Page(s): 708 - 713
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    Exactly what is the nature of the “computing revolution” that is now under way and, specifically, what is the future for computers in distribution engineering? These are some of the provocative questions discussed in an attempt to assay the significance of digital computers for power distribution. View full abstract»

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  • The philosophy of engineering reliability

    Page(s): 714 - 718
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    This second half of a two-part article expands upon the uses of the present definitions and concepts and attempts to show how reliability of parts influences system reliability. The importance of life testing is discussed briefly along with some comments on system design. View full abstract»

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  • Current-carrying capacity of acsr

    Page(s): 719
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    THE CONTINUOUS current-carrying capacity of transmission lines is dependent upon the allowable temperature of operation of the conductors. A great deal of test work has been performed in the investigation of this problem on ACSR (aluminum cable, steel reinforced). However, two factors—the effect of the sun and of the altitude of the line—have not received consideration heretofore. View full abstract»

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  • Harold S. Black: 1957 lamme medalist: History of the medal

    Page(s): 720
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    THE LAMME MEDAL, being awarded to a distinguished member of the Institute today, was established by Benjamin Garver Lamme in his will. The purpose of the award is to give deserved recognition to a member of the Institute who has shown “meritorious achievement in the development of electrical apparatus or machinery.” This achievement may be in any field of application. View full abstract»

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  • Career of the medalist

    Page(s): 720 - 722
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    OUR SOCIETY is honoring Harold Stephen Black by presenting the Lamme Medal to him. Harold and I have been associated in research and development at the Bell Telephone Laboratories for more than 35 years. It is my privilege to outline for you the career of my friend, Harold Stephen Black, our medalist. View full abstract»

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Aims & Scope

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

Full Aims & Scope