By Topic

IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 5 • Date July 5 1984

Filter Results

Displaying Results 1 - 9 of 9
  • Method of calculation of the transient electromagnetic field in ferromagnetic materials for the known vector of induction B on the surface

    Publication Year: 1984, Page(s):293 - 300
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (981 KB)

    The paper presents a method of calculation of a transient electromagnetic field in ferromagnetic materials with real characteristics of magnetisation taken into account. Spatial-temporal distributions of the electromagnetic field have been calculated as a result of the solution of the nonlinear partial differential equation for induction B, in space ¿¿(x, t), using the difference method. The paper... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Calibration of a precision three-port coaxial junction: a new component for immittance standardisation

    Publication Year: 1984, Page(s):302 - 306
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (693 KB)

    In a number of earlier papers, the general theory of a three-port coaxial junction was given together with applications in immittance standardisation, the generation of reflection coefficient standards inside the unit circle and S21 standards less than unity by reflective attenuation. Since then, a precision three-port junction has been constructed for use with 14.2875 mm precision connectors. Man... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Book review: Solid Hydrogen. Theory of the Properties of Solid H2, HD and D2

    Publication Year: 1984
    IEEE is not the copyright holder of this material | PDF file iconPDF (117 KB)
    Freely Available from IEEE
  • New method for determination of steady-state temperature rises of transformers

    Publication Year: 1984, Page(s):307 - 311
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (630 KB)

    For transformers whose thermal time constant exceeds two hours, unacceptably large systematic errors occur if recommended methods for determination of steady-state temperature rise are used. Therefore a new criterion for heat run duration and a new method for determination of steady-state temperature rise are proposed, which ensure reliable determination of steady-state temperature rise independen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Microprocessor system for measuring frequency spectra and computing transient responses of a power apparatus

    Publication Year: 1984, Page(s):312 - 317
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (573 KB)

    The automatic amplitude and phase measuring system is constituted by a low-voltage sine-wave signal generator with synthesised frequencies in the 10 Hz¿¿11 MHz band, an RMS voltmeter, a phase detector, and an 8-bit microprocessor with 16 Kbyte memory,. The design of the phase detector has been worked up in an original manner. The microcomputer automates the generation of input signals and permits ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New analytical approach for computing DC unipolar corona losses

    Publication Year: 1984, Page(s):318 - 324
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (790 KB)

    New analytical expressions for ionised electric field, emitter charge and current densities and voltage-current characteristics for DC unipolar corona are presented for conductor-to-plane geometry. The hypotheses normally considered in the literature, including that of Deutsch, are used in the integration procedure which is based on a Fourier series expansion of charge and current densities on the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Space-charge-limited electron current flow between coaxial cylinders and concentric spheres with ion production at an intermediate radius

    Publication Year: 1984, Page(s):325 - 327
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (355 KB)

    The steady-state Poisson equation is formulated in cylindrical and spherical geometries assuming the emission of electrons at zero energy from the cathode and the emission of both ions and electrons, again at zero energy, from an intermediate surface at an arbitrary radius between the electrodes. The equation is solved numerically with the boundary conditions of zero field at the charged particle ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance of Videotex-to-speech convertor

    Publication Year: 1984, Page(s):328 - 334
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (862 KB)

    Videotex is an electronic information service which allows sighted subscribers to access vast amounts of textual information in data bases via the telephone line. Pages of information, called via a keypad or keyboard, are normally viewed on the screen of a domestic television set. A microprocessor-based system which automatically converts Videotex pages to synthetic speech in real time has already... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An inside view of `Japan inc¿

    Publication Year: 1984, Page(s):335 - 340
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (957 KB)

    An engineer from the British Telecom Research Laboratory at Martlesham Heath recently spent six months as part of a research group at the Musashino Electrical Communication Laboratory of Nippon Telegraph and Telephone in Tokyo. The aim of the visit was to participate in a research project to the mutual benefit of the two organisations. The visit also provided the opportunity to examine at first ha... View full abstract»

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