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Electrical Engineering

Issue 7 • July 1955

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  • [Front cover]

    Publication Year: 1955, Page(s): c1
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    Freely Available from IEEE
  • Contents

    Publication Year: 1955, Page(s): c2
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  • Contents

    Publication Year: 1955, Page(s): 1A
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  • [Advertisement]

    Publication Year: 1955, Page(s): 2A
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  • Highlights

    Publication Year: 1955, Page(s): 3A
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  • [Advertisement]

    Publication Year: 1955, Page(s): 4A
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  • Utility engineering problems and opportunities

    Publication Year: 1955, Page(s):559 - 562
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    The arguments aimed at ambitious young engineers to convince them that electrical utility engineering has little to offer are examined and shown to lack solid factual support. However, considerable evidence is presented showing the economic significance of the electrical utility industry and the wide variety of challenging problems and opportunities it poses. View full abstract»

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  • The need for a national science policy

    Publication Year: 1955, Page(s):563 - 566
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    Technological development has produced for America the highest standard of living in history, but technology depends, in turn, on research. Thus, if our tremendous rate of production is to be continued, a national science policy must be formulated which will foster and maintain those conditions under which research can best be carried on. View full abstract»

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  • Classified bibliography on insulated conductors: A new system for referencing technical data

    Publication Year: 1955, Page(s):567 - 569
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (865 KB)

    In the light of current interest in the classification of technical data, this article describing the attempt of one technical committee to methodize reference material within its scope is published in the hope that it will encourage other technical committees to undertake similar projects covering subjects in their fields. View full abstract»

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  • A multistable transistor circuit

    Publication Year: 1955, Page(s):570 - 572
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    In the circuit described in this article, use is made of transistors in a design for multistable operation. Theoretically, only two active elements in a trigger arrangement are necessary for any number of statically stable states. View full abstract»

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  • Impulse tests on low-voltage windings of distribution transformers

    Publication Year: 1955, Page(s):573 - 577
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1216 KB)

    These tests are discussed from the viewpoint of field investigations and transient considerations, the transient behavior of distribution transformers, fault detection by induced-voltage-wave method, comparison of fault-detection methods when testing high-voltage windings, and impulse testing low-voltage windings of large high-voltage distribution transformers. View full abstract»

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  • A 69-kv compressed-air circuit breaker

    Publication Year: 1955, Page(s): 578
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (223 KB)

    A 5,000,000-KVA COMPRESSED-AIR circuit breaker that is rated at 69,000 volts with 2,000-ampere continuous current-carrying capacity has been developed and tested. The breaker is completely metal enclosed. Six condenser bushings extend through the roof for mounting of current transformers, potential devices, and for connection to the customer's bus structure (Fig. 1). Verification tests included in... View full abstract»

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  • Intermittently increased kilovar output

    Publication Year: 1955, Page(s): 579
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (181 KB)

    RECOMMENDATIONS HAVE BEEN MADE by the AIEE for permissible 60-cycle overvoltage operation of power capacitors. Operation at overvoltage of capacitors means an increased kilovar output proportional to the square of the voltage increase. So far, little use has been made of the economics offered by this overload capacity. The overload capacity of capacitors can be used advantageously for two temporar... View full abstract»

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  • Dielectric behavior of some fluorogases and their mixtures with nitrogen

    Publication Year: 1955, Page(s):580 - 584
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    Preliminary evaluations of new fluorogases indicate that the dielectric characteristics of many of the new fluorocarbons are superior to those of the halogenated gaseous compounds. However, it is often advantageous to mix these gases with nitrogen to lower the cost, reduce the condensation point, and obtain a more uniform breakdown characteristic in the nonuniform field. View full abstract»

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  • Compressional stress on magnetic laminations

    Publication Year: 1955, Page(s): 585
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (146 KB)

    IN MANY important applications, magnetic materials in the form of thin laminations are subjected to a compressional stress. Particularly important examples of this type of application are the clamping of magnetic laminations for electric motors, transformers, and synchro-components. In each of the examples, the direction of the compressional stress is perpendicular to the direction of the magnetic... View full abstract»

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  • Switching of substation capacitor banks by current-biased induction-voltage relay

    Publication Year: 1955, Page(s):586 - 588
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB)

    Data presented in this article, plus operating experience with this type of control, prove that large banks of substation static capacitors may be successfully switched automatically to gain the maximum benefit in voltage control and power factor correction. View full abstract»

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  • European practices in power-line design

    Publication Year: 1955, Page(s): 589
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    THIS digest presents a review of wind, ice, and other loading assumptions specified by European line designers, so as to draw a comparison between American assumptions and those employed abroad. View full abstract»

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  • Transistor demodulator for magnetic amplifiers in A-C servo applications

    Publication Year: 1955, Page(s):590 - 592
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB)

    A phase-sensitive transistor demodulator in series with the high-gain 2-stage magnetic amplifier, as described, provides a unit that is very effective in a position servo system. View full abstract»

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  • Noncontacting vibration pickups

    Publication Year: 1955, Page(s): 593
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    THIS digest discusses a group of methods for the measurement of vibration by devices which make no mechanical contact with the vibrating object. These devices sense the vibrations by their effect on an electric field between the pickup and the object shaken and give the magnitudes of the frequency, amplitude, and waveform of the vibratory displacements. In spite of the disadvantage of determining ... View full abstract»

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  • Solid-core high-voltage bushings

    Publication Year: 1955, Page(s): 594
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    A HIGH-VOLTAGE bushing which successfully sustains repeated application of 60-cycle and impulse test voltages may not be adequate for prolonged operation at rated line-to-ground voltage. Tests to evaluate bushings at voltages slightly in excess of operating have, therefore, been devised. View full abstract»

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  • Radiation counter for beta particles

    Publication Year: 1955, Page(s):595 - 598
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (635 KB)

    This conduction-type counter uses a cadmium-sulfate crystal mounted in a hypodermic needle; a probe preamplifier of low noise was designed to be used with it. An analysis of the geometry of the problem has been derived to yield the counting rate in terms of the crystal size, concentration of radioactive atoms, their mean life, and the end-point energy of the beta particles. View full abstract»

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  • Circuit breakers for switching 230-kv lines

    Publication Year: 1955, Page(s): 599
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (217 KB)

    EXCESSIVE TRANSIENT VOLTAGES are the principal concern in switching long 230-kv lines. Such voltages are usually the result of commutation of line capacitance with respect to supply voltage by restriking of line circuit breakers. Experience has shown that restrikes will generally produce higher voltages on long lines than on relatively short lines. This is because the breakers will usually interru... View full abstract»

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  • Basic problems in film pickup for TV broadcasting

    Publication Year: 1955, Page(s):600 - 604
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    Some of the most important problems of television film reproduction are discussed, emphasizing these problems from the standpoint of the television system. A commercially available color-film camera system utilizing three Vidicon pickup tubes is described. View full abstract»

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  • A test board for watt-hour meter standards

    Publication Year: 1955, Page(s): 605
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (177 KB)

    THE Central Laboratory of the New England Power Service Company maintains the watt-hour standards for the New England Electric System. Up to recently, calibration techniques were not satisfactory since not only field watt-hour meter standards but reference watt-hour meter standards showed errors, minor in so far as commercial yardsticks were concerned, but annoying from the laboratory point of vie... View full abstract»

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  • Analysis of errors in sampled-data systems

    Publication Year: 1955, Page(s): 606
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    THE system error ε(t) in a sampled-data feedback system is an important design parameter. It is defined as the difference between the actual output c(t) and the desired output cd(t), i.e., $epsilon (t) buildrel{triangle}over {=} c_{d}(t)-c(t)$. The system error has two components: (1) organic error, due to system energy storages; and (2) ripple, due to the sampling pro... 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