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Electrical Engineering

Issue 5 • Date May 1943

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Displaying Results 1 - 25 of 34
  • [Front cover]

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

    Page(s): c2
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  • [Advertisements]

    Page(s): 1 - 8
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  • Contents

    Page(s): 1
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  • He can smile through it all

    Page(s): 190
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  • Recent developments in organic plastics for electrical insulation

    Page(s): 191 - 197
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  • A comparison of the transform and classical methods

    Page(s): 198 - 203
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    This article compares the amount of arithmetical computation required to determine transient currents by the transform method with that required to determine the same currents by the classical method. The amount of arithmetical computation is measured by the number of times it is necessary to multiply or add two numbers. Comparison is made only for the case in which the circuits have few branches with lumped constants of resistance, inductance, and capacitance, and any advantage or disadvantage either method may have in other cases is not considered. No account is taken of the added effort necessary to acquire a working knowledge of the transform method nor of the time required to derive the transform expressions for the currents from the differential equations. View full abstract»

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  • Fluorescent lighting in wartime britain

    Page(s): 203 - 205
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    Britain's war production and the development of fluorescent lighting in that country have had profound effects on each other. How this modern lighting is aiding Britain's war program and how black-out requirements and war-industry regulations have speeded up the development of fluorescent lighting are explained here by the President of the British Illuminating Engineering Society. View full abstract»

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  • Ultrashort electromagnetic waves III — Generation

    Page(s): 206 - 215
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    The general theory behind electromagnetic waves is as old as Maxwell's field equations. The production of undamped ultrashort waves of any appreciable power, however, was delayed until the discovery and development of the magnetron as a high-frequency oscillator and the introduction of the type of velocitymodulation generator known as the klystron. The author of the accompanying article has not only designed and developed some of these new types of ultrashort-electromagnetic-wave generators but has contributed by his many interesting talks and technical papers to the advancement and general knowledge in this field. This is the third article of a series originally presented as lectures before the basic science group of the AIEE New York Section. The two preceding articles appeared in the March and April issues of “Electrical Engineering” View full abstract»

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  • Institute activities: Role of engineers in war keynote of North Eastern district meeting

    Page(s): 216 - 218
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  • Section: Joint georgia meeting of AIEE and IAEI

    Page(s): 218 - 219
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  • Standards: Revised editions now available

    Page(s): 219
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  • Personal

    Page(s): 219 - 220
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  • Obituary

    Page(s): 220 - 221
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  • Membership

    Page(s): 221 - 222
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  • Of current interest: New agency provides central source of critical electronic parts

    Page(s): 223 - 225
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  • Education: New York state changes license requirements for engineers

    Page(s): 225 - 226
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  • Other societies: Dushman speaks at installation of Brooklyn Sigma XI chapter

    Page(s): 226
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  • Joint activities

    Page(s): 226 - 227
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  • Letters to the editor

    Page(s): 227 - 229
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  • New books

    Page(s): 229 - 230
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  • Pamphlets

    Page(s): 230
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  • Transactions section: Preprint of corresponding pages from the current annual AIEE transactions volume

    Page(s): 207 - 210
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    The current flowing to ground from an automobile, whose rear wheels were turning on a dynamometer, was measured. The magnitude of the constant current measured, in the order of microamperes, shows that the vehicle is electrically charged by conduction through the tires. The experimental results are consistent with the conception of a simple equivalent circuit. These results were checked by road tests. Calculation shows that the tires are usually conducting sufficiently to discharge a car in a short time after it has stopped moving. View full abstract»

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  • Pilot-wire circuits for protective relaying — Experience and practice

    Page(s): 210 - 214
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    BECAUSE of the increasing use of pilot-wire relays, particularly for longer lines, the relay subcommittee initiated an investigation of the operating experience with the pilot channel itself. From this investigation it was hoped to determine the requirements for a reliable pilot channel. Unfortunately, the information obtained to date is not conclusive, and under war conditions the completion of this investigation appears to be delayed unavoidably. On the other hand, plant expansion necessary to the war effort frequently has called for quick decisions on relay schemes, and pilot wires have been used in many cases. Because the pilot-wire channel is the least known item in the pilot-wire relay scheme, the committee has decided to publish the information now available to indicate the trend, so that prospective users of pilot-wire relaying may have the benefit of this preliminary work. Investigation will be continued as actively as conditions permit and another report issued as soon as sufficient data are available. View full abstract»

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  • Cooling power transformers by forced circulation of cooling medium

    Page(s): 215 - 221
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    The paper discusses the various methods that have been used in cooling power transformers by forced circulation of the cooling medium, and points out the benefits 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