Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics

Issue 2 • May 1954

Filter Results

Displaying Results 1 - 18 of 18
  • Eddy-current losses in a semi-infinite solid due to a nearby alternating current

    Publication Year: 1954, Page(s):97 - 106
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2134 KB)

    IN many engineering structures one is confronted with the problem of eddy-current losses in conducting solids due to nearby alternating currents. In electric machines such as motors, generators, and transformers, the machine parts exposed to variable fields are made up of laminations so as to break up the eddy-current paths and avoid losses. Yet, in parts of these machines, solid metallic structur... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Polyethylene-insulated telephone cable

    Publication Year: 1954, Page(s):106 - 111
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2865 KB)

    The physical properties of polyethylene are such as to make it attractive for many wire-insulating applications, particularly in multiconductor communications cables. This article presents certain factual information relating to new types of multiconductor cables having extruded polyethylene insulation, and describes briefly their initial installation in the working telephone plant. The literature... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Flux resetting characteristics of several magnetic materials

    Publication Year: 1954, Page(s):111 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1709 KB)

    EXPERIMENTAL data are presented on the rate of change of flux in four materials used in magnetic amplifiers. A test circuit which applied a constant magnetizing force to a test core was employed.1 The rate of change of flux was then observed as the induced voltage in a pickup coil. By observing the induced voltage wave on an oscilloscope, one can determine the peak and average rate of change of fl... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An ultrahigh-frequency transmitter employing klystron power amplifiers

    Publication Year: 1954, Page(s):114 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2852 KB)

    IN THE search for a higher power transmitting tube for the frequency range of 470 to 890 megacycles (mc), it rapidly became evident that only a tube using transit time advantageously could solve the problem. In any discussion of an ultrahigh-frequency (uhf) transmitter employing a klystron power amplifier, a basic knowledge of klystrons is essential. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency response of a resonant dielectric amplifier

    Publication Year: 1954, Page(s):119 - 124
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1330 KB)

    A fundamental limitation on the steady-state signal frequency response of a series-resonant dielectric voltage amplifier is the time required for the resonant circuit to adjust to a change in tuning. This paper analyzes this limitation for the case where nonlinear resonance effects may be neglected. Typically, this limitation may require that the power or carrier frequency be several hundred times... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An automatic voltage control system for electrical precipitators

    Publication Year: 1954, Page(s):124 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1431 KB)

    A FUNDAMENTALLY new system of precipitator automatic voltage control has been developed for use in the Cottrell process of electrically removing suspended matter from gases. The new system is based on extensive field measurements with respect to the actual operating requirements necessary to obtain fundamentally sound performance. This, coupled with flexibility in design, ensures that optimum elec... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A radio relay remote-control system for frequency-modulation broadcast stations

    Publication Year: 1954, Page(s):128 - 131
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1061 KB)

    RURAL Radio Network, Ithaca, N.Y., operates a chain of 13 frequency-modulation (FM) stations on a radio relay basis. Six of these stations are owned and operated by this network. In common with most FM broadcast stations, the transmitters are located in mountainous terrain with relatively poor access, especially in the winter season. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A transducer using a short-circuit rotor

    Publication Year: 1954, Page(s):131 - 134
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1305 KB)

    An a-c phase-sensitive signal generator for use in servo and instrumentation work is described. The voltage gradient and zero position are independent of linear rotor motions, and the torque and magnetic side pull on the rotor are extremely small. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-gain side-firing helical antennas for ultrahigh-frequency television broadcasting

    Publication Year: 1954, Page(s):135 - 138
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1289 KB)

    IN designing any high-frequency device which is to have relatively uniform characteristics over a band of frequencies, one of the prime considerations for easing the severity of design compromises is to choose a basic configuration inherently suited to maintaining the reactive energies of the system low compared with the energy flow per cycle through the device. Such a smooth flow through the syst... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Sheet and plated-metal measurements with a phase-ansle-type probe

    Publication Year: 1954, Page(s):138 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1022 KB)

    The basic operating principles and design data for an instrument to measure metal thickness or plating depth for nonferrous materials are described. The mode of operation, involving the measurement of a phase angle, permits the use of a noncontacting probe suitable for the continuous inspection of samples in motion. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The recognition and identification of symmetric switching functions

    Publication Year: 1954, Page(s):142 - 147
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1565 KB)

    IN the design of switching circuits based on relay-contact networks, it is known that if the function which describes the network is of the symmetric type it leads to a network which is much more economical of switching elements than the best series-parallel circuit. C. E. Shannon1 first described this type of function and its associated relay contact network in 1938. His definition of the symmetr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impulse ionization and breakdown in liquid dielectrics

    Publication Year: 1954, Page(s):147 - 155
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5928 KB)

    A photographic technique was used to measure ionization under impulse voltage in transformer mineral oil and in transformer Askarel (a chlorohydrocarbon). Two electric-field conditions were investigated: 1. The liquid under test surrounded disk electrodes between which were placed impregnated pressboard and dried photographic paper. Above a threshold voltage, Lichtenberg figures occurred in the th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of electric discharges on the breakdown of solid insulation

    Publication Year: 1954, Page(s):155 - 162
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3208 KB)

    The effect of corona on the long-time dielectric strength of insulation is emphasized in this paper, and various factors influencing the breakdown of insulation with corona are discussed. Data on the corona threshold voltages on dielectric surfaces at electrode edges show that the threshold voltage varies for a wide variety of dielectrics only as the ratio of dielectric thickness to dielectric con... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of network theory to the analysis of rotating machinery part I - Synchronous and asynchronous machines

    Publication Year: 1954, Page(s):162 - 169
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1888 KB)

    AS the technology of engineering progresses a point is sometimes reached where, by the expansion and generalization of certain basic concepts, two or more seemingly unrelated areas of study can be brought together and shown to have a common origin. The common origins are very important to those in the teaching profession, where the rapid expansion of the engineering profession demands that an ever... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of network theory to the analysis of rotating machinery part II - Commutating machines

    Publication Year: 1954, Page(s):169 - 177
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2571 KB)

    The procedure used in arriving at the differential equations of the commutating machine is identical to that used on the noncommutating machines discussed in reference 1. However, the techniques used in processing the resulting equations is somewhat different. In the study of commutating machines, two problems are of interest: 1. How can the machine be analyzed along with its associated network to... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Significant measurements for determining the stability of high-temperature magnet-wire insulation

    Publication Year: 1954, Page(s):177 - 182
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2023 KB)

    Test methods for evaluating the stability of high-temperature magnet-wire insulation are described. Reduction in dielectric strength during uninterrupted exposure to high temperature is used to define the insulation life which would be obtained with comparatively ideal operating conditions. Moisture resistance, as measured by power factor after humidification, is proposed as a criterion for determ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of a single-core magnetic amplifier with real rectifier and core functions

    Publication Year: 1954, Page(s):182 - 188
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1405 KB)

    A REVIEW of the literature concerned with magnetic amplifiers has disclosed a myriad of articles dealing with the load circuit and sometimes control circuit response of single-core amplifiers employing the self-saturation principle.1¿4 Each of these discussions has utilized specific assumptions which are in each case aimed toward an ultimate simplification of the mathematical manipulations which ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Digital computers as an aid in electric-machine design

    Publication Year: 1954, Page(s):189 - 192
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (963 KB)

    DIGITAL and analogue computers are being recognized gradually as aids in design procedures applied to machines. Recently the Motor Network Calculator (MONECA), an analogue computer for single phase motor design, was described.1, 2 In addition there have been other references describing the use of network and differential analyzers to solve some problems touching on machine design. Thus far there h... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

This Transactions ceased publication in 1963. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope