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Electrical Engineering

Issue 4 • Date April 1944

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

    Publication Year: 1944, Page(s): c1
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  • [Advertisement - Front inside cover]

    Publication Year: 1944, Page(s): c2
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  • [Advertisements]

    Publication Year: 1944, Page(s):1 - 12
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  • Contents

    Publication Year: 1944, Page(s): 1
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  • [Advertisements]

    Publication Year: 1944, Page(s): 1
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  • Air traffic control

    Publication Year: 1944, Page(s):119 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3574 KB)

    Air passenger traffic will increase five times and air cargo 30 times by 1950, predicts this authority in the field of air traffic control. He indicates that further advancement and comprehensive planning are needed if air traffic control is not to hamper the future development of air transportation. View full abstract»

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  • Recent developments in light sources

    Publication Year: 1944, Page(s):126 - 138
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  • Enemy army communications equipment

    Publication Year: 1944, Page(s):139 - 144
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    AMERICAN engineers have been instrumental in giving to the United States Army and to the Signal Corps of the Army the best equipment in the world. Although engineering for civilian needs is very different from engineering for military needs, and most American engineers have spent a lifetime in civilian engineering, they have learned within a brief period of two or three years to design equipment t... View full abstract»

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  • Institute activities

    Publication Year: 1944, Page(s):145 - 152
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  • Of current interest

    Publication Year: 1944, Page(s):153 - 155
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  • Transactions section: Calculation of unbalanced voltage drops in distribution circuits with particular reference to multi-grounded neutrals

    Publication Year: 1944, Page(s):145 - 148
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  • Overloading of transformers — Cases not covered by the general rules

    Publication Year: 1944, Page(s):149 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1324 KB)

    THE American Standard “Guides for Operation of Transformers and Regulators” C57.3, 1942 and the interim reports on overloading (references 21 and 24) give information which covers many of the overloading conditions encountered with transformers. These rules, however, do not cover every situation. In order to help fill this lack, charts have been prepared which will enable the safety ... View full abstract»

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  • The vibration of electric contacts

    Publication Year: 1944, Page(s):153 - 155
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    IN evaluating an electric switching device, its following characteristics must be considered: 1. Ability to close the circuit without undue deterioration of contacting points. 2. Ability to carry the current without injurious temperature rise. 3. Ability to interrupt the circuit with the least destruction of contacting members. View full abstract»

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  • A new three-element current-limiting power fuse

    Publication Year: 1944, Page(s):156 - 159
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    IN order to meet the requirements for a fuse of small size with current-limiting characteristics for connecting light loads and small apparatus to high power systems, a new form of current-limiting fuse was developed and announced in 1940. Three distinct elements characterized this fuse. View full abstract»

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  • Thermal protection of transformers under overload conditions

    Publication Year: 1944, Page(s):160 - 164
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2141 KB)

    THE AIEE transformer subcommittee1 has recommended higher overloads than those given in the ASA Guides for operation of transformers. These overloads are set up on the assumption that, under rare emergency conditions, it is better to use up a small amount of the expected life of the transformer than to have an interruption of service. Therefore, as a result of the work of the AIEE and t... View full abstract»

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  • The accuracy of measurements in lumped R-C cable circuits as used in the study of transient heat flow

    Publication Year: 1944, Page(s):165 - 171
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2349 KB)

    THE conditions in lumped circuits of this type have been investigated previously.1 However, these earlier investigations were based mainly on the assumption of ideal capacitors, that is, capacitors which do not leak. Such capacitors are not available. Actual experiments must always be carried out with capacitors which do leak; therefore an investigation of the errors caused by leaking c... View full abstract»

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  • A design method for D-C machines

    Publication Year: 1944, Page(s):172 - 174
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    INTEREST in d-c machines in many phases of the war effort prompts the writers to present a method of design which has been found to be very useful and time saving. The method makes use of fundamental relationships in somewhat different forms and approaches the design from a different viewpoint than is ordinarily the case. The procedure has been in use for some time in the design of low-voltage air... View full abstract»

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  • Inverter action on reversing of thyratron motor control

    Publication Year: 1944, Page(s):175 - 184
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2225 KB)

    A GREAT many of the mechanized operations carried on in the industrial field call for a reversal of the mechanism by its motive power which is commonly an electric motor. In nearly all cases this reversal must not impose a severe strain on the mechanism nor demand an excessive overload from the power lines. In many of these reversing drives, particularly where they are of a cyclic nature, the reve... View full abstract»

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  • System voltages and fault currents determined easily on D-C board

    Publication Year: 1944, Page(s):184 - 188
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    THE purpose of this paper is to outline a simple procedure that may be used to obtain short-circuit data most generally needed for relay co-ordination studies by using a d-c calculating table. View full abstract»

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  • Corona in aircraft electric systems as a function of altitude

    Publication Year: 1944, Page(s):189 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2137 KB)

    CORONA in an electric system consists of minute arcs which produce ozone and nitrous acid in air; they carbonize oil, paper, and cotton; they oxidize and age rubber, and they corrode metal. Corona at operating voltages has often caused the rapid deterioration of the electric equipment containing the corona. In addition, high-frequency radiation is produced which may interfere with radio and allied... View full abstract»

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  • Polarized-light servo system

    Publication Year: 1944, Page(s):195 - 197
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2654 KB)

    SERVO mechanisms or follow-up systems are used in many recording and control devices to amplify small fores or torques so that the motion of a heavily loaded output mechanism will correspond closely to the motion of a very low torque input element.1–3 View full abstract»

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  • Electric-circuit burning-clear and damage phenomena on aircraft structures

    Publication Year: 1944, Page(s):198 - 203
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5213 KB)

    IT is generally accepted that the correct performance of the electric system is vital to the effective use of an airplane. Electric-wiring faults, such as short circuits resulting from gunfire or other causes, may result in faulty control or fire hazard. Experience has shown that on the commonly used 28.5-volt d-c systems such short circuits are often self-clearing, and serious consequences do not... View full abstract»

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  • Electrically driven gyroscopes for aircraft

    Publication Year: 1944, Page(s):204 - 208
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    GYROSCOPIC instruments are given a place of prominence on the instrument panels of military and commercial aircraft. They are among the “most used” of all the instruments and are necessary for blind flight since they serve as stable references in space when natural objects are not visible. This group consists of a gyro horizon, showing the attitude of the aircraft — that is, w... View full abstract»

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  • [Advertisment - Back inside cover]

    Publication Year: 1944, Page(s): c3
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  • [Advertisement - Back cover]

    Publication Year: 1944, Page(s): c4
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Aims & Scope

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

Full Aims & Scope