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Electrical Engineers, Proceedings of the Institution of

Issue 1 • Date January 1976

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Displaying Results 1 - 20 of 20
  • Inaugural address. `Only connect¿

    Publication Year: 1976
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3391 KB)

    The title suggests both the benefits and the problems of communication and the relationships between communication systems and those who use them. The theme is the role that electrical engineering can play in improving communications and in the optimisation of relations between equipment and people. The profession has made major contributions to increasing man's abilities to communicate. Its techn... View full abstract»

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  • IEE Electronics Division: Chairman's address. Electronics and the aeroplane

    Publication Year: 1976, Page(s):13 - 15
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (818 KB)

    The paper traces the development of electronics applications to aviation (avionics). The rapid development of electronic equipment and systems is discussed, and the paper points out the mutual dependence of air frame and equipment in aerospace projects. View full abstract»

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  • Experimental airborne radar transmitter

    Publication Year: 1976, Page(s):16 - 20
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (930 KB)

    The design, manufacture and commissioning of an airborne radar transmitter amplifier is described. The microwave valve employed is a crossed-field amplifier (c.f.a.), cathode modulated by a hard-valve shunt modulator. The peak output power is 15 kW, and pulse lengths up to 5 ¿s may be used. The e.h.t. supply is derived from a high frequency transistor invertor stabilised by a feedback loop. View full abstract»

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  • Capacitance-change transducer applied to rotating vane anemometry and tachometry

    Publication Year: 1976, Page(s):21 - 25
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    Electrical transducing methods for use in rotating-vane anemometry and tachometry are discussed and the advantages to be gained from a capacitance-change pickoff are outlined. Both a theoretical and practical analysis for the capacitance variation in such systems is given, leading to the conclusion that the resulting change, when converted into a voltage-time signal is ideally suited to cable and ... View full abstract»

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  • On the error-correcting capability of optimum linear block codes

    Publication Year: 1976, Page(s):26 - 31
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (752 KB)

    The performance of optimum linear block codes has been examined by computer simluation, and the error distribution at the decoder output, the block-error probability and the bit-error probability have been determined for the codes when they are used on a binary symmetric channel with random errors. A table showing the distribution of errors in the decoder output is presented, and it is shown how t... View full abstract»

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  • Nonlinear equalisers using modulo arithmetic

    Publication Year: 1976, Page(s):32 - 38
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (860 KB)

    The recent published literature contains a description of a data-transmission system in which the data signal at the transmitter is fed through a channel equaliser that includes a device for holding the transmitted signal within a given range of values. The paper presents a theoretical analysis of the system, together with the results of computer simulation tests, and proposes a simple modificatio... View full abstract»

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  • Distortion performance of the parametric upconvertor as a communications receiver front end

    Publication Year: 1976, Page(s):39 - 43
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (570 KB)

    An analysis is developed for the prediction of intermodulation distortion effects in abrupt-junction current pumped varactor frequency convertors optimised to satisfy the requirements of communications-receiver front-end performance. The technique is extended to the prediction of gain compression effects, and is applied to a practical circuit. Excellent agreement with predictions is demonstrated f... View full abstract»

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  • IEE Power Division: Chairman's address. Consulting engineering for power projects

    Publication Year: 1976, Page(s):45 - 50
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (921 KB)

    The different roles of manufacturers, supply authorities and consultants in the British electrical-supply industry date from the very start of electrical power engineering at the end of the 19th century. The paper traces the role of the consulting-engineering profession in the development of the home supply industry through the men who founded practices at that time leading to the development of t... View full abstract»

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  • Design, testing and construction of the 500 kV overhead lines for the El Chocon-Buenos Aires transmission system

    Publication Year: 1976, Page(s):51 - 59
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1216 KB)

    The paper describes, briefly, the background to the El Chocon 500 kV transmission system, indicating the size and location of the generating plant together with the atmospheric and natural conditions prevailing along the line route to the greater Buenos Aires load centre, some 1040 km to the north east of the generating sources. The electrical requirements of the two physically independent but par... View full abstract»

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  • Assessment of the influence of soil thermal resistivity on the ratings of distribution cables

    Publication Year: 1976, Page(s):60 - 72
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1653 KB)

    The paper summarises the findings of an extensive field investigation into the behaviour of soils affecting operation of buried power cables. Statistical treatment of the large volume of results available leads to the establishment of thermal-resistivity values for defined groups of soils and the main types of load encountered in practice. View full abstract»

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  • Discussion on "Proposals for installation of single-core cables"

    Publication Year: 1976, Page(s):73 - 75
    IEEE is not the copyright holder of this material | PDF file iconPDF (537 KB)
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  • Development of a 300 kW 3000 rev/min d.c. machine using thyristor-assisted commutation

    Publication Year: 1976, Page(s):76 - 80
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (907 KB)

    The principle of thyristor-assisted commutation was easily demonstrated on small laboratory-type machines, but the commercial significance of the concept could only be investigated by constructing a machine of a size where commutation would normally be a problem. A 300 kW, 3000 rev/min version was built and the performance of this prototype is described. In particular, it is explained how the prob... View full abstract»

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  • Commutating time calculations for machines using thyristor-assisted commutation

    Publication Year: 1976, Page(s):81 - 84
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    A calculation of the commutating time for machines using thyristor-assisted commutation is as important to these machines as the calculation of current-reversal curves for conventional d.c. machines. New factors enter into the determination of the inductance of a commutating coil, particularly an inductance component attributable to a main-pole-axis flux change. Different procedures also apply to ... View full abstract»

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  • Terminal characteristics of machines with thyristor-assisted commutation

    Publication Year: 1976, Page(s):85 - 88
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (567 KB)

    Machines with thyristor-assisted commutation(t.a.c.) have some unusual output characteristics. The small number of commutator sections and the consequently wide interpoles cause voltage and torque pulsations of appreciable amplitude, although the current ripple is usually small. A change in the commutating time with current causes an effective brush swing, resulting in an interpole-generated compo... View full abstract»

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  • Optimum goodness criterion for linear-induction-motor design

    Publication Year: 1976, Page(s):89 - 92
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    Linear induction motors (l.i.ms) have many possible applications, ranging from low-speed cranes to high-speed ground-vehicle propulsion. However, in average and high-speed l.i.ms, the end effects cause considerable deterioration in the performance in low-slip regions. The paper introduces the concept of realistic goodness factor GR, which takes into account by appropriate coefficients the airgap l... View full abstract»

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  • Simulation of power-system fault currents and voltages for protective-equipment testing

    Publication Year: 1976
    IEEE is not the copyright holder of this material | PDF file iconPDF (120 KB)
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  • IEE Control & Automation Division: Chairman's address. Some developments in computer-aided information services for the blind

    Publication Year: 1976, Page(s):93 - 97
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (647 KB)

    The paper reviews the needs of the blind community for printed material, and surveys current developments in the applications of automation to increase the availability of Braille. The problems of automatic translation of English text to Braille are considered. Some possible systems for giving a greatly improved access to Braille are surveyed, and an automated system for map and diagram production... View full abstract»

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  • Design of multivariable digital control systems using the sequential return difference method

    Publication Year: 1976
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (318 KB)

    The sequential return difference method is applied to the design of a digital controller for a multivariable digital system. Although the open loop system is unstable, it is shown that a controller which provides good transient behaviour and low interaction may be designed by the appropriate sequence of single-loop, digital, root-locus designs. View full abstract»

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  • IEE Science Education & Management Division: Chairman's address. The professional engineer in the 1990s

    Publication Year: 1976, Page(s):101 - 106
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1102 KB)

    The paper deals briefly with the history of engineering and its recognition as a profession. The growth of professional institutions is traced and their contribution to the education, training and qualification of engineers is explained, with reference to the Council of Engineering Institutions. After a review of the present situation, the roles of professional chartered and technician engineers a... View full abstract»

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  • Sparking potentials and ionisation coefficients in SF6

    Publication Year: 1976, Page(s):107 - 108
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (374 KB)

    Steady-state ionisation currents under uniform field conditions have been measured in SF6 over the range 110 ¿E/p¿1000V cm¿1torr¿1 with gas pressures varying from 1 to 10 torr, at 20°C. Sparking potentials Vs were also measured for a range 1¿pd¿20 torr-cm. Townsend's primary ionisation (¿/p) and electron-attachment (¿/p) coefficients were found to depend on E/p only. The values of seconda... 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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