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Electrical Engineers, Proceedings of the Institution of

Issue 10 • Date October 1963

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Displaying Results 1 - 25 of 26
  • Cylindrical capacitive obstacles in a waveguide

    Publication Year: 1963, Page(s):1709 - 1719
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1144 KB)

    Scattering from a cylindrical metallic object placed centrally in a waveguide so that its axis is parallel to the transverse magnetic field of the dominant mode is shown to give rise to two field types in the scattered waves, which are dipole and isotropic in nature. On the other hand, a dielectric rod similarly placed shows only dipole scattering. A method is presented which uses a potential theo... View full abstract»

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  • Phase characteristics of h.f. radio waves received after propagation by the ionosphere

    Publication Year: 1963, Page(s):1720 - 1734
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1709 KB)

    A radio wave after reflection from the ionosphere is considered to consist of a specularly reflected component plus a varying diffracted component. The ratio of the power in the specular component to that in the diffracted component is of interest in considering the design and performance of large-aperture receiving arrays. A theoretical treatment is presented whereby this ratio can be derived fro... View full abstract»

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  • Low-light-level television

    Publication Year: 1963, Page(s):1735 - 1746
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1428 KB)

    The paper summarizes the fundamental limitations set by the available light and the efficiency of the photocathodes available at present, and considers in detail how closely existing types of camera tube and image intensifier can approach this fundamental limit. There are many possibilities, from the simple adaptation of existing broadcast tubes to the combination of high-gain image intensifiers w... View full abstract»

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  • Photoconductive probe for measuring electromagnetic fields

    Publication Year: 1963, Page(s):1747 - 1754
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (941 KB)

    Probes in which the usual connecting leads to the detector have been eliminated have been constructed for measuring the intensity of an electromagnetic field. The new devices are modulated reradiating or scattering antennas that consist of either a small dipole (for measuring the electric field) or a small shielded loop (for measuring the magnetic field) centre-loaded with a photocell illuminated ... View full abstract»

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  • Derivation of excitation coefficients for Chebyshev arrays

    Publication Year: 1963, Page(s):1755 - 1758
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (351 KB)

    An arrangement of isotropic elements, uniformly spaced at a half wavelength or greater and suitably excited, was used by Dolph to obtain optimum radiation patterns for linear broadside arrays. Riblet generalized the technique and extended it to include arrays of odd numbers of elements with uniform spacing of less than a half wavelength. DuHamel demonstrated that the calculation of the excitation ... View full abstract»

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  • Microwave bridge reflectometer

    Publication Year: 1963, Page(s):1759 - 1763
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (550 KB)

    A form of the microwave reflectometer which yields a reflection-coefficient angle as well as modulus is discussed and its analysis presented. A simple compensation method is described whereby the measurement errors due to imperfect performance of the directional couplers can partially be eliminated and partially be allowed for. Finally, the measurement accuracy obtainable from this reflectometer s... View full abstract»

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  • Theory of exponentially tapered RC transmission lines for phase-shift oscillators

    Publication Year: 1963, Page(s):1764 - 1770
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (869 KB)

    Tapered RC transmission lines are useful in phase-shift oscillators, because they permit (i) a great reduction in the required gain of the active device (vacuum tube or transistor) and (ii) generation of frequencies up to a few megacycles per second. They are particularly useful for microminiature oscillator circuits because of their small size and the possibility of integration with the active de... View full abstract»

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  • Laser mixer and I.F. amplifier

    Publication Year: 1963
    IEEE is not the copyright holder of this material | PDF file iconPDF (154 KB)
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  • Use of matrix theory in the analysis of linear feedback circuits

    Publication Year: 1963, Page(s):1771 - 1772
    IEEE is not the copyright holder of this material | PDF file iconPDF (150 KB)
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  • Stray losses in squirrel-cage induction motors. Validity of the reverse-rotation test method

    Publication Year: 1963, Page(s):1773 - 1777
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (673 KB)

    The paper describes the sources and components of stray load losses in squirrel-cage induction motors and examines the validity of the reverse-rotation test method which has previously been recommended as the best available method for measuring the loss. It is shown that this method of test is based on assumptions which are fundamentally incorrect, and that the consequent errors in measured loss w... View full abstract»

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  • Discussion on "The controlled retardation of Ward Leonard drives"

    Publication Year: 1963
    IEEE is not the copyright holder of this material | PDF file iconPDF (132 KB)
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  • Application of mode theory to the analysis of machine systems

    Publication Year: 1963, Page(s):1779 - 1786
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (965 KB)

    The mode theory approach is shown to lead to a complete solution of problems involving machine systems under the normal assumptions necessary to give linear differential equations. Only two basic matrix operations, namely inversion and latent root evaluation, suffice to enable determination of the response to any input applied at any set of terminals. It is shown that there are four distinct types... View full abstract»

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  • Discussion on "Some improved lead alloys for cable sheathing"

    Publication Year: 1963, Page(s):1786 - 1790
    IEEE is not the copyright holder of this material | PDF file iconPDF (742 KB)
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  • Discussion on 'High-voltage power-transformer insulation'

    Publication Year: 1963, Page(s):1791 - 1798
    IEEE is not the copyright holder of this material | PDF file iconPDF (1345 KB)
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  • Discussion on "Multi-generator transient-stability performance under fault conditions"

    Publication Year: 1963, Page(s):1799 - 1804
    IEEE is not the copyright holder of this material | PDF file iconPDF (895 KB)
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  • Nuclear instrumentation. A review of progress

    Publication Year: 1963, Page(s):1805 - 1817
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1825 KB)

    First Page of the Article
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  • Transducers for positional measuring systems a review of progress

    Publication Year: 1963, Page(s):1818 - 1828
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1595 KB)

    First Page of the Article
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  • Experimental thermoelectric generator

    Publication Year: 1963, Page(s):1829 - 1836
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (943 KB)

    A low-power device, simulating a section from a megawatt-output generator, has been built to test a new idea for the arrangement of thermoelements around a cylindrical pipe. The device uses bismuth telluride type thermoelements and operates between a condensing vapour source at 250° C and a sink of cooling water at about 20° C. The maximum measured efficiency was 2.1% at 13 W output. The low eff... View full abstract»

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  • Unconventional methods of electricity generation

    Publication Year: 1963, Page(s):1837 - 1852
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2247 KB)

    The paper sets out the physical principles on which the magnetohydrodynamic, thermo-electric, and thermionic generators, and the fuel cell are based. Other methods of generation, including the solar cell, are also mentioned. The limitation of the conventional steam turbo-alternator for large-scale electricity generation is pointed out, and the desirability of developing higher-temperature plant to... View full abstract»

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  • Discussion on "Unconventional methods of electricity generation"

    Publication Year: 1963, Page(s):1853 - 1854
    IEEE is not the copyright holder of this material | PDF file iconPDF (353 KB)
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  • Application of the second method of Lyapunov to the stability of certain position control systems containing a back-e.m.f. non-linearity

    Publication Year: 1963, Page(s):1855 - 1866
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1408 KB)

    In the linearized analysis of control systems containing a d.c. field-excited motor the armature current is assumed constant. The effect of armature back-e.m.f. is to introduce a two-variable (field current, motor speed) non-linearity into the system equation. The second method of Lyapunov is used in the paper to investigate the effect of this non-linearity on the stability of certain position con... View full abstract»

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  • Effect of a back-e.m.f. non-linearity on responses of a second-order position control system

    Publication Year: 1963, Page(s):1867 - 1881
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1505 KB)

    In the linearized analysis of control systems containing a d.c. field-excited motor the armature current is assumed constant, allowing motor torque to be taken proportional to field current. Since, in practice, this introduces the complication of current forcing to overcome variations caused by motor back-e.m.f., the question arises of how much armature current forcing, or constancy, is necessary ... View full abstract»

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  • Polynomial-root solver and root-locus plotter

    Publication Year: 1963, Page(s):1882 - 1886
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (573 KB)

    An analogue method is described for the solution of polynomial equations having complex roots. The method is an adaptation of the known technique of spiral scanning in the complex plane, identified by the variable s, whereby exponentially decreasing oscillatory waveforms are identified with the various powers of s. The required waveforms are generated using conventional linear computing units in s... View full abstract»

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  • Digital transfer voltmeters: principles and error characteristics

    Publication Year: 1963, Page(s):1887 - 1904
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1786 KB)

    Precision measurements of the r.m.s. value of a fluctuating voltage may be made using sampling and digital techniques. Although considerably more complex than analogue methods, the sampling voltmeter has substantial advantages in many respects. The paper discusses the principles on which the meter is based. Its error characteristics are derived and analysed for four periodic waveforms and for whit... View full abstract»

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  • Self-generating h.f. carrier feedback anemometer

    Publication Year: 1963, Page(s):1905 - 1914
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1235 KB)

    A measuring-circuit a.c.-carrier technique is described, in which a feedback measuring system is self-generating with respect to the carrier and involves neither phase-sensitive detector nor carrier modulator stages, so that relatively simple and reliable circuits can be designed. The technique is described in connection with its application to a hot-wire anemometer, circuit stability and optimum-... View full abstract»

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Aims & Scope

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

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