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Electrical Engineers, Proceedings of the Institution of

Issue 10 • October 1964

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Displaying Results 1 - 25 of 26
  • TR switch for use at 200 Mc/s in air-filled coaxial line

    Publication Year: 1964, Page(s):1625 - 1629
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (441 KB)

    The paper describes the development of a tr switch mounted in coaxial line for use at 200Mc/s. Two designs of tr switch emerged, each representing a balance of the conflicting design features required and a solution to the problem of sputtering. In one design, the sputtering is minimised by using an extended electrode area, and this provides a simple and rugged construction. However, this is somew... View full abstract»

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  • Synthesis of matched filters for signal recognition using magnetostrictive delay lines

    Publication Year: 1964, Page(s):1630 - 1636
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (865 KB)

    After a brief introduction to matched filters, a new method for their realisation, using magnetostrictive delay lines to generate sampled impulse responses, is described. The impulse response is determined by the distribution of remanent magnetism along the delay-line wire, and only one transducer coil is used. Investigations into the performance of the device as a matched filter are described. View full abstract»

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  • Further tables of element values for inductively coupled double-tuned networks

    Publication Year: 1964, Page(s):1637 - 1640
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (342 KB)

    The insertion-loss method of design is used to develop further tables of element values for the double-terminated, inductively coupled, double-tuned interstage network, with equiripple insertion-loss characteristics corresponding to minimum passband return losses of 10, 15, 20, 25 and 30dB. In each case, the lower edge of the passband is varied from 0.1 to 0.95 in increments of 0.05, with the uppe... View full abstract»

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  • Proposed optoelectronic method of achieving very fast digital logic

    Publication Year: 1964, Page(s):1641 - 1652
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1654 KB)

    In fast logic systems many difficulties are involved in electrical logical interconnections, which in the fastest systems have to be by correctly terminated matched lines. Because the line impedance is necessarily low, it is difficult to meet the requirements of (i) a useful fan-out ratio, and (ii) digit voltages large enough to overcome interference and tolerances at the inputs of succeeding logi... View full abstract»

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  • Terminal impedances and transfer functions of ladder networks

    Publication Year: 1964, Page(s):1653 - 1658
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (553 KB)

    Concise mathematical formulas are developed for the input impedances, output impedances and transfer functions of ladder networks containing two kinds of elements only, namely resistance and capacitance or resistance and inductance or capacitance and inductance. A procedure is given for extending these formulas to the most general type of ladder network in which any series or shunt arm may contain... View full abstract»

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  • Theory and potential applications of backward waves in nonperiodic inhomogeneous waveguides

    Publication Year: 1964, Page(s):1659 - 1667
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1024 KB)

    Backward waves can propagate in an inhomogeneous waveguide of circular cross-section when the geometry and the properties of the materials are suitable. The phenomenon is related to a degeneracy of the H11 and E11 modes at cutoff, and this suggests where to look for the most pronounced effect. The behaviour of the group velocity is studied in detail, in the neighbourhood of the degeneracy, for a n... View full abstract»

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  • Interaction of a radiating source with a plasma

    Publication Year: 1964, Page(s):1668 - 1678
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1057 KB)

    When a radiating source is immersed in a homogeneous plasma of infinite extent; an electroacoustic wave may be excited in addition to the usual electromagnetic wave. The electroacoustic wave becomes a longitudinal plasma wave in the far zone of the source. The case of a Hertzian dipole in a lossless plasma is considered first. The fields of both the electromagnetic (e.m.) and plasma modes excited ... View full abstract»

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  • Determination of antenna parameters by scattering cross-section measurements

    Publication Year: 1964, Page(s):1679 - 1686
    Cited by:  Papers (15)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1065 KB)

    Experimental procedures are developed for the determination of input impedance, gain and scattering cross-section of an antenna as a function of its load, from a minimum of three scattering amplitude measurements. The procedures involve terminating the antenna with a calibrated reactive load, whose variation causes a maximising and minimising of the antenna scattering cross-section; the loads asso... View full abstract»

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  • Synthesis technique for a class of linear signal-processing antenna arrays

    Publication Year: 1964, Page(s):1687 - 1691
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (561 KB)

    This paper presents a technique for synthetising linear signal-processing antenna arrays using wideband elements and a matched filter. It is shown that, for signals with a finite spectrum, such arrays will consist of a far lower number of elements and have smaller overall dimensions than conventional arrays for single-frequency c.w. operation with similar radiation characteristics. The elements ar... View full abstract»

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  • Helical line with circumferentially magnetised ferrite cylinder

    Publication Year: 1964, Page(s):1692 - 1693
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | PDF file iconPDF (213 KB)
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  • Excitation of surface waves

    Publication Year: 1964, Page(s):1693 - 1695
    IEEE is not the copyright holder of this material | PDF file iconPDF (407 KB)
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  • Testing television cameras

    Publication Year: 1964, Page(s):1695 - 1696
    IEEE is not the copyright holder of this material | PDF file iconPDF (287 KB)
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  • Varactor-diode parametric amplifiers

    Publication Year: 1964
    IEEE is not the copyright holder of this material | PDF file iconPDF (95 KB)
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  • Measurement of stray load losses in squirrel-cage induction motors

    Publication Year: 1964, Page(s):1697 - 1705
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (964 KB)

    The paper begins by considering the reliability of two low-power methods of measuring stray load losses: the first of these methods is the well known reverse-rotation test and the second a relatively unknown test called the d.c. excitation test. The development of a new and accurate full-load method of measuring stray load losses in squirrel-cage induction motors is then discussed, and the results... View full abstract»

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  • Discussion on 'Connecting large machines to power systems'

    Publication Year: 1964, Page(s):1706 - 1712
    IEEE is not the copyright holder of this material | PDF file iconPDF (1338 KB)
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  • Voltage and impedance conditions for the rapid plugging of induction motors including Saturistor control

    Publication Year: 1964, Page(s):1713 - 1628
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1621 KB)

    It is shown that the accelerating or braking time of a polyphase induction motor after a step change of applied voltage can be estimated by using the reciprocal-accelerating-torque/speed curve. For some transitions, the time required is shown to vary inversely with the area under the steady-state-torque/speed curve. Balanced applied voltages are shown to be preferable to unbalanced voltages for pl... View full abstract»

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  • Resistive earthing of electrical distribution systems in ships and similar installations

    Publication Year: 1964, Page(s):1729 - 1735
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (668 KB)

    The nature and causes of overvoltages in a 3 phase distribution system are discussed. By considering the circuit created by a phase-to-earth fault it is found that there is a critical value of earth-leakage resistance which affords maximum protection against overvoltages. The critical value of this resistance is such that the current passed by it is equal to the current passed by the capacitance t... View full abstract»

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  • Jump height of overhead-line conductors after the sudden release of ice loads

    Publication Year: 1964, Page(s):1736 - 1746
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1301 KB)

    A series of tests was performed on a five-span section of 132kV line to determine the jump height of the conductors after the release of simulated ice loads from the centre span. The use of semitension assemblies at the suspension towers reduced the maximum jump height compared with that obtained with standard suspension-insulator strings, but did not prevent the phase conductors from passing dang... View full abstract»

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  • Mercury-arc valves for high-voltage d.c. transmission

    Publication Year: 1964, Page(s):1747 - 1753
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1374 KB)

    Use of the high-voltage direct-current method for power transmission necessitates conversion of a.c. into h.v.d.c. for the line, and conversion of the d.c. back to a.c. again. The critical component of such convertors is the controllable electric valve. The basic problem of extending the voltage range of mercury-arc valves to these high levels is outlined, as well as the nature of the underlying d... View full abstract»

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  • Discussion on "The design and performance of high- and low-voltage terminal boxes"

    Publication Year: 1964
    IEEE is not the copyright holder of this material | PDF file iconPDF (105 KB)
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  • Discussion on ¿Excitation of large turbogenerators¿

    Publication Year: 1964, Page(s):1754 - 1756
    IEEE is not the copyright holder of this material | PDF file iconPDF (497 KB)
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  • Six-channel adaptive computer

    Publication Year: 1964, Page(s):1757 - 1765
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1095 KB)

    The paper discusses the design and operation of a self-adjusting analogue computer. It is shown theoretically that a simple hill-climbing technique should be applicable to systems in which many variables are adjusted simultaneously. In the system discussed, six variables are simultaneously adjusted according to some optimising criterion. The self-adjusting computer has been applied to optimisation... View full abstract»

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  • New method of simulating space charge in the electrolytic tank

    Publication Year: 1964, Page(s):1766 - 1770
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (642 KB)

    A new method of simulating space charge in an inverted electrolytic tank has been investigated. Once set up, the space-charge distribution is insensitive to changes in the conductivity of the electrolyte. The technique is illustrated by examples. With its aid it is also possible to use two-dimensional models to obtain three-dimensional axially symmetric fields. View full abstract»

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  • New approach to the plotting of phase-plane trajectories

    Publication Year: 1964, Page(s):1771 - 1774
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (420 KB)

    By considering simultaneously the two planes x¿¿x¿ and x¿¿x, the isocline method is extended to find (for all initial conditions) the behaviour of second-order nonlinear autonomous systems which are not easily amenable to the usual phase-plane methods. The effect of variation of nonlinear functions can easily be studied. Simple as it is, the method is believed to be novel. View full abstract»

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  • New technique for the measurement of dielectric properties of plastics

    Publication Year: 1964, Page(s):1775 - 1777
    IEEE is not the copyright holder of this material | PDF file iconPDF (363 KB)
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Aims & Scope

The Proceedings of the Institution of Electrical Engineers was published by the IET between 1963 and 1979.

Full Aims & Scope