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Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry

Issue 2 • May 1956

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Displaying Results 1 - 10 of 10
  • Let-go currents and voltages

    Publication Year: 1956, Page(s):49 - 56
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2589 KB)

    Let-go current curves are presented for commercial 60-cycle a-c and for direct current. New data are presented which confirm previously published let-go current curves for direct currents having various amounts of a-c ripple content, together with new data for 60-cycle a-c let-go voltages. The voltage analysis is extended to cover direct current, thus rounding out the subject of let-go hazards. Re... View full abstract»

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  • Interruption tests on high-voltage air-break contactor

    Publication Year: 1956, Page(s):56 - 60
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4848 KB)

    HIGH-VOLTAGE air-break contactors are frequently used in controllers, both for starting motors and for interrupting short circuits. According to the National Electrical Manufacturers Association (NEMA) standards,1 2,300- to 4,600-volt contactors for this duty may be used in circuit locations where the available symmetrical short-circuit kilovolt-amperes (kva) are as high as 50,000 kva. In this pap... View full abstract»

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  • Economie studies applied to industrial power systems

    Publication Year: 1956, Page(s):61 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2572 KB)

    INDUSTRIAL plants are quite understandably governed principally by the problems associated most directly with production. It is important, naturally, to concentrate the talents of plant management on the larger elements in the cost of the finished product because new ideas can be very effective here in creating savings in cost or increasing output. It is therefore not surprising that the cost of e... View full abstract»

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  • Rectifier power supply for a modern rod mill

    Publication Year: 1956, Page(s):70 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2696 KB)

    THE steel industry in the United States is a large user of d-c electric power. Since the use of d-c power for rolling mill drives is so widespread, it is natural to consider the application of ignitron rectifier equipment as the power supply for main mill drive service. Until approximately 20 years ago, the motor-generator set was used exclusively to supply the large amounts of d-c power for rolli... View full abstract»

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  • Analysis and performance of a valve-controlled hydraulic servomechanism

    Publication Year: 1956, Page(s):75 - 85
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2760 KB)

    VALVE-CONTROLLED hydraulic servomechanisms are an important class of control systems because of their widespread use in fields requiring high performance and light weight, particularly for military aircraft. Unfortunately, hydraulic servos are not widely understood, as manifested by the scarcity of good technical papers and textbook material on the subject. View full abstract»

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  • Synthesis of feedback control systems by gain-contour and root-contour methods

    Publication Year: 1956, Page(s):85 - 96
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2125 KB)

    The root-locus method for synthesis of servo systems is modified and extended to cover systems having adjustable time constants. Root-locus and gain-contour methods permit studies of effects upon transient response resulting from variations in gain and variations in time constants to be made independently. The root-contour method facilitates the synthesis of servo systems in which gain is a functi... View full abstract»

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  • Evaluation of radio influence voltages in fluorescent lighting installations

    Publication Year: 1956, Page(s):96 - 99
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1057 KB)

    ANY electric device whose operation produces a very rapid build-up or interruption of electric energy can cause a disturbance that may adversely affect radio reception. The communicator of a d-c machine represents a mechanical means of producing radio-frequency (r-f) power from electrical transients. A fluorescent lamp represents an all-electric voltage breakdown type of transient that produces mo... View full abstract»

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  • Test and operating experience with the triple-diametric rectifier

    Publication Year: 1956, Page(s):100 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3569 KB)

    THERE is an ever-present demand for improvements in electric equipment. To improve the equipment, the engineer may try many new ideas. Some of these will yield results while others will be discarded as not being worth while. On equipment such as mercury-arc rectifiers many ideas have been successful and the improvements have been frequent and substantial. Usually, the engineer has so many new idea... View full abstract»

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  • Digital compensation of continuous-data feedback control systems

    Publication Year: 1956, Page(s):107 - 116
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2454 KB)

    THE application of digital controllers or sampled-data processing units for stabilizing and compensating sampled-data feedback control systems has been a subject of considerable study in recent years.1,2,3 It is now known that this technique is an effective and useful means in the design of sampled-data feedback systems. View full abstract»

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  • Shipboard use of 400-cycle electric power

    Publication Year: 1956, Page(s):116 - 124
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (749 KB)

    IN any discussion of 400-cycle electric power systems, the question comes to mind of why frequencies should be considered other than the established standard 60-cycle frequency now widely and most commonly used in electric systems ashore and afloat. Since 1932, 60-cycle a-c systems have been used in the majority of the ships' service electrical installations, particularly installations of large ca... View full abstract»

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Aims & Scope

This Transaction ceased production in 1963. The current retitled publication is IEEE Transactions on Industry Applications.

Full Aims & Scope