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Electrical Engineers, Proceedings of the Institution of

Issue 9 • Date September 1967

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Displaying Results 1 - 25 of 36
  • Experimental information-storage filter

    Publication Year: 1967, Page(s):1185 - 1192
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1033 KB)

    The information-storage filter is a spectrum analyser which can examine a broad frequency spectrum continuously. The incoming signals are mixed with a sweeping frequency, and the resultant signals are processed by a tapped delay line matched to the swept signals. The delay line with associated detection circuitry is called an information-storage filter. The input to the filter is compressed and em... View full abstract»

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  • Design and some applications of a generalised integrator

    Publication Year: 1967, Page(s):1193 - 1205
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1306 KB)

    The design and performance are described of a generalised electronic integrator capable of integration with respect to a variable which is itself a function of time. The integrator is a hybrid analogue-digital device and is based on the use of ¿ modulation sampling techniques. Signal frequencies in excess of 100c/s can be integrated satisfactorily within a 1% error. At lower frequencies the maxim... View full abstract»

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  • Determination of integration limits in calculating distortion noise power

    Publication Year: 1967, Page(s):1206 - 1208
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (322 KB)

    A simple method of determining the limits of integration for the integrals encountered in the calculation of distortion noise power is described. This procedure is especially useful in the case of simultaneous transmission of more than one type of information, defined by different analytical expressions in the corresponding frequency bandwidths. In applying this method, there is no need to solve a... View full abstract»

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  • General relations governing the exact sensitivity of linear networks

    Publication Year: 1967, Page(s):1209 - 1212
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (386 KB)

    The theorem proves that any network function executed by a linear network is a bilinear function of any bilateral or unilateral element immittance embedded in the network. This result is then used to derive some difference-quotient theorems expressing the exact sensitivity of the network. Some theorems previously published by Parker, Peskin and Chirlian are shown to be corollaries of the above the... View full abstract»

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  • Use of a waveguide dispersive line in an f.m. pulse-compression system

    Publication Year: 1967, Page(s):1213 - 1218
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (910 KB)

    Reasons are given for employing a pulse-compression technique in an experimental, S-band radar system requiring a very high range resolution. The advantages of using waveguide operating close to its cutoff frequency as a dispersive line are outlined. The problem of producing an f.m. transmitted signal matched to the delay characteristics of the dispersive line is considered, and attention is paid ... View full abstract»

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  • Measurement of the dielectric properties of soft materials with high loss and high permittivity in a parallel-plate region

    Publication Year: 1967, Page(s):1219 - 1222
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (409 KB)

    A method described is for measurement of the loss tangent and permittivity of any soft substance in which either or both of these quantities have large values, by means of field measurements in a parallel-plate region. A measurement of the complex permittivity of agar agar is included. The method has proved to be accurate and convenient. View full abstract»

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  • Switching characteristics of m.o.s. and junction-gate field-effect transistors

    Publication Year: 1967, Page(s):1223 - 1230
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (971 KB)

    The nonlinear differential equations describing the large-signal switching behaviour of field-effect transistors (f.e.t.s) are derived. They are shown to be analogous to those of an RC transmission line having uniform linear resistance but nonlinear capacitance per unit length. Solutions of these equations, based on an effective linear-capacitance approximation, are obtained and applied to the cas... View full abstract»

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  • Characterisation of tunnel diodes at microwave frequencies

    Publication Year: 1967, Page(s):1231 - 1236
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (567 KB)

    Microwave characteristics of coaxial-mounted tunnel diodes are investigated. Measured immittance data are used to deduce the equivalent-circuit parameters of the diode without recourse to d.c. or low-frequency measurements. The results indicate that the series-resistance component is frequency dependent, while the rest of the parameters in the circuit are frequency invariant. The phenomenological ... View full abstract»

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  • Synthesis of nonuniform antenna arrays using lambda functions

    Publication Year: 1967, Page(s):1237 - 1241
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (635 KB)

    This paper presents a new method for the synthesis of nonuniformly spaced arrays. By means of the Cheby¿shev-Gauss quadrature and the Hankel transform, the space factor of an array and a prescribed radiation pattern can be reduced into the same form in terms of the lambda functions. By equating the coefficients of the lambda functions, the element excitation can be determined directly. The synthe... View full abstract»

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  • Edge-numbering convention for setting up circuit and cut-set matrixes

    Publication Year: 1967, Page(s):1241 - 1243
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | PDF file iconPDF (326 KB)
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  • High-speed rotating-beam aerial array

    Publication Year: 1967, Page(s):1243 - 1244
    IEEE is not the copyright holder of this material | PDF file iconPDF (246 KB)
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  • Use of multivibrators in small telemetry systems

    Publication Year: 1967
    IEEE is not the copyright holder of this material | PDF file iconPDF (95 KB)
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  • Use of Carter's coefficient with narrow teeth

    Publication Year: 1967, Page(s):1245 - 1250
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (595 KB)

    The paper shows that Carter's coefficient gives permeance values almost identical with the true ones for narrow teeth, as established by Carter's later work, unless the tooth width is less than the radial air gap. A small increase in the coefficient is given for tooth widths down to zero. The flux-density distribution obtained by the superposition of waveforms for successive slots as in isolation,... View full abstract»

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  • Rotor-surface flux distributions in Lorenz-type medium-frequency inductor alternators

    Publication Year: 1967, Page(s):1251 - 1259
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1231 KB)

    The paper considers the fluxes existing in the air gap of a single-phase Lorenz-type inductor alternator under load conditions. From the interaction of the field and armature reaction m.m.f.s with the rotor permeance, expressions are derived for the air-gap flux-density waves. These can be separated into (a) components stationary with respect to the rotor, resulting in distortion of the no-load wa... View full abstract»

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  • Discussion on 'Analysis and measurement of radial power flow in machine air gaps'

    Publication Year: 1967, Page(s):1259 - 1260
    IEEE is not the copyright holder of this material | PDF file iconPDF (310 KB)
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  • Discussion on 'Effect of excitation regulation on synchronous-machine stability'

    Publication Year: 1967, Page(s):1260 - 1262
    IEEE is not the copyright holder of this material | PDF file iconPDF (566 KB)
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  • Time-response polar characteristics of multisignal phase comparators in distance protection

    Publication Year: 1967, Page(s):1263 - 1268
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (815 KB)

    Multisignal modes of phase comparison, as applied to distance protection, have been explored in recent papers in relation to the derivation of steady-state polar characteristics. However, no previous account has been devoted to the influence that the phase-comparator operating-time response has on this form of relaying, as is required in assessing relay performance under transient conditions. The ... View full abstract»

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  • Loci of reactances of multiple-conductor circuits in the complex plane

    Publication Year: 1967, Page(s):1269 - 1273
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (449 KB)

    The variation in reactances of a group of s1ingle-core conductors, as a function of conductor spacings and transpositions, is a problem of importance, particularly in connection with the crossbonded systems in use in the UK. The analytical methods for determining these reactances have long been known, but little attention has been paid to establishing suitable graphical displays. A method for disp... View full abstract»

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  • Aluminium conductors for overhead lines

    Publication Year: 1967, Page(s):1274 - 1282
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1252 KB)

    The paper reviews the range of aluminium conductors for overhead power lines, the variety of which has greatly increased in recent years in parallel with the rapid growth of transmission and distribution systems. The characteristics of the various types of stranding are outlined, pointing out the flexibility in line design obtained by varying the makeup of conductors. The practical factors which g... View full abstract»

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  • New magnet power supply of the Birmingham proton synchrotron

    Publication Year: 1967, Page(s):1283 - 1286
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (518 KB)

    This paper describes the new power supply of the Birmingham proton synchrotron which is used to produce the required field-density waveform in the main magnet air gap. After discussion of the original power supply and its control system, the design of the new power supply is described. This is a closed-loop automatic control system incorporating one loop to accurately control the field-winding cur... View full abstract»

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  • Cables for aircraft. Installation systems and experience

    Publication Year: 1967, Page(s):1287 - 1297
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1740 KB)

    The paper covers the subject of cables for aircraft from the aircraft constructor's aspect. Factors which govern the choice of cables are dealt with under the general headings of environment, weight and cost. Special cables are then briefly discussed. Aircraft circuit and installation requirements are extensively considered, including reference to short-time characteristics of cables and the effec... View full abstract»

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  • Cables for aircraft. Design and development

    Publication Year: 1967, Page(s):1298 - 1306
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1378 KB)

    A previous paper by Bird, Hancock and MacKenzie described developments in the aircraft-cable field up to a decade ago. The present paper gives an account of the design and development carried out since then on the three main aircraft-wiring cables: Nyvin, Tersil and Efglas. Various alternative designs for use in similar operating-temperature ranges to these are also discussed. The paper continues ... View full abstract»

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  • Cables for aircraft. Pressure-type connections

    Publication Year: 1967, Page(s):1307 - 1315
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1658 KB)

    The paper discusses the techniques adopted by Britain aircraft constructors for terminating cables by pressure-type connections. After a brief historical introduction, the various factors which influence design are dealt with in some detail. The various forms of high-pressure (permanent) connection used for aircraft cables are reviewed. As one type of termination can be used for several different ... View full abstract»

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  • Cable-fault location on power systems

    Publication Year: 1967
    IEEE is not the copyright holder of this material | PDF file iconPDF (62 KB)
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  • Coaxial shunt

    Publication Year: 1967, Page(s):1317 - 1324
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (771 KB)

    The response of a coaxial shunt is derived for several important forms of current variation. Both steady-state and transient components of the response are given in the form of nondimensional graphs. The paper thus extends the work of Park,1 who gave a rigorous treatment for the steady-state sinusoidal response. The mathematical process is described in the Appendix and is applicable to any form of... 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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