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Electrical Engineers, Proceedings of the Institution of

Issue 12 • Date December 1963

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Displaying Results 1 - 25 of 36
  • Design of cuccia couplers for quadrupole amplifiers

    Publication Year: 1963 , Page(s): 2105 - 2117
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1714 KB)  

    The electron coupler devised by Cuccia has recently been used to couple r.f. signals to and from the electron beam in the low-noise electron-beam parametric or quadrupole amplifier described by Adler. In this role, its design determines the minimum noise factor, bandwidth and dynamic range of the amplifier. The paper describes the detailed design of Cuccia couplers for use in quadrupole amplifiers... View full abstract»

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  • Immittance synthesis in the non-reciprocal domain

    Publication Year: 1963 , Page(s): 2118 - 2124
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (734 KB)  

    Immittance synthesis may be carried out with greater freedom and generality in the non-reciprocal domain. The method described makes use of a non-reciprocal element called the unitor. A required realisation is first found as the driving-point immittance of a non-reciprocal network containing one or more unitors; then, if desired, each unitor element may be substituted by a passive reciprocal subne... View full abstract»

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  • Notes on composite numbers

    Publication Year: 1963 , Page(s): 2125 - 2131
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (770 KB)  

    A certain number system, governing combinatorial operations of elements of a given set, is provided. The operations are commutative, associative and distributive. The system rules countable sets of elements, i.e. parameters, such as define a complex number, and serves for precise and compact statements and for rational evaluation of explicit computable forms and formulas. The operations with eleme... View full abstract»

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  • The Xth Plenary Assembly of the CCIR

    Publication Year: 1963 , Page(s): 2132 - 2138
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (921 KB)  

    The paper is based on a lecture given to the IEE Electronics Division on 10th April 1963 and outlines some of the more important results achieved by the Xth Plenary Assembly of the CCIR held at Geneva from the 16th January to 15th February 1963. As a preliminary, the organisation and functions of the International Telecommunication Union (ITU), an agency of the United Nations, are briefly consider... View full abstract»

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  • Polarization of radar echoes, including aircraft, precipitation and terrain

    Publication Year: 1963 , Page(s): 2139 - 2148
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1322 KB)  

    The paper records the results of measurements made during 1950¿53 on the echoing properties of various radar targets using two radars which radiated circularly polarized radiation, one on X-band (wavelength 3.2cm) and the other on Q-band (wavelength 8.6mm): the design and operating procedure of these radars, which received both hands of circular polarization, are described. Although the tests on ... View full abstract»

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  • Tracking radars for complex targets

    Publication Year: 1963 , Page(s): 2149 - 2162
    Cited by:  Papers (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1317 KB)  

    The direction in which various tracking radar systems will point when tracking a static complex target is derived. From this analysis, it is concluded that the conical-scan system, the phase-monopulse system and the true amplitude-monopulse system are equally accurate. The separation of the antennas for the actual amplitude-monopulse system should be minimised, and the phase amplitude-monopulse sy... View full abstract»

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  • Properties of cylindrical waveguides containing isotropic and anisotropic media

    Publication Year: 1963 , Page(s): 2163 - 2173
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1238 KB)  

    The cut-off conditions in circular waveguide containing an axial circular rod are considered when the rod is perfectly conducting and is surrounded by dielectric material, also when the rod and the surround are comprised of dielectric material, ferrimagnetic material or plasma. The characteristic equations involve certain cylindrical functions which depend on two variables. Contours of these funct... View full abstract»

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  • Power transmitted by a medium of complex wave impedance

    Publication Year: 1963 , Page(s): 2174 - 2176
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (352 KB)  

    The paper discusses the part played by a reactive component of wave impedance in providing for a proportion of the power transmitted under standing-wave conditions. In particular, attention is called to microwave propagation in a lossy medium, such as a semiconductor, in an ionised gas and in a waveguide operated near cutoff. It is shown that, in each of these cases, the storage fields of opposite... View full abstract»

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  • Microwave propagation in a waveguide containing a semiconductor to which is applied a steady transverse magnetic field

    Publication Year: 1963 , Page(s): 2177 - 2181
    Cited by:  Papers (8)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (574 KB)  

    The paper discusses results of an experimental investigation into microwave propagation at 10Gc/s through a rectangular waveguide partially filled by a thin semiconducting plate, extending in the E plane about one third of a wavelength along the guide, and having a superimposed transverse steady magnetic field of flux densities up to 0.45 Wb/m2 The plates used were either germanium (n-type and p-t... View full abstract»

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  • Effect of small variations of impedance on the pole and zero locations for a passive linear network

    Publication Year: 1963
    Save to Project icon | PDF file iconPDF (376 KB)  
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  • Set of ideal network elements

    Publication Year: 1963 , Page(s): 2182 - 2184
    Cited by:  Papers (1)
    Save to Project icon | PDF file iconPDF (267 KB)  
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  • Operational impedances of turbogenerators with solid rotors

    Publication Year: 1963 , Page(s): 2185 - 2199
    Cited by:  Papers (18)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1690 KB)  

    It has long been known that the performance of a turbogenerator differs in certain respects from that predicted by the idealised theory based on Park's equations. The reason is that the damping effects of eddy currents in the solid rotor are not correctly represented by damper coils acting on the two axes. The theory presented in the paper allows for the eddy currents in the determination of the d... View full abstract»

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  • Application of matrix methods to the solution of travelling-wave phenomena in polyphase systems

    Publication Year: 1963 , Page(s): 2200 - 2212
    Cited by:  Papers (173)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1414 KB)  

    The interest in travelling waves and surge phenomena in power systems has grown considerably because of the relevance to power-line carrier communication and protection, fault location, switching of unloaded lines and the recovery voltages on circuit-breakers under short-line fault conditions. The paper summarizes the solution to the single-conductor wave equation, develops the solution for the 2-... View full abstract»

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  • Focal-point protection system for power reactors

    Publication Year: 1963 , Page(s): 2213 - 2220
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (895 KB)  

    The development of power-reactor electrical protection circuits and current design practice are briefly discussed, and the performance of these systems is considered in relation to ideal safety concept requirements. A new focal-point protection design is proposed for emergency shut-down. This offers a basically simple, highly reliable, solid-state protection system and provides continuous one-out-... View full abstract»

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  • Commutatorless alternating-voltage-fed variable-speed motor

    Publication Year: 1963 , Page(s): 2221 - 2227
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (876 KB)  

    The paper describes a commutatorless alternating-voltage-fed motor which can be used on single- or multiphase supplies. The speed is varied and the motor readily reversed without having to switch high voltage or large current or highly inductive circuits. The machine can be described as an inverted direct-current motor, i.e. the field poles rotate. The reversal of the current in the stationary arm... View full abstract»

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  • Considerations concerning a modified Kramer system

    Publication Year: 1963 , Page(s): 2228 - 2232
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (599 KB)  

    A variable-speed drive can be obtained by means of a modified Kramer system consisting of a polyphase induction motor, the rotor circuit of which is connected through a 3-phase bridge rectifier to the armature of a d.c. motor directly coupled to the induction motor. Control is obtained by varying the separate excitation of the d.c. motor. The operation of such a system is considered in respect of ... View full abstract»

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  • Discussion on "Magnet power supply for the 7 GeV proton synchrotron Nimrod. Parts 1-3"

    Publication Year: 1963 , Page(s): 2233 - 2236
    Save to Project icon | PDF file iconPDF (705 KB)  
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  • Discussion on "The shielding of overhead lines against lightning"

    Publication Year: 1963 , Page(s): 2237 - 2238
    Save to Project icon | PDF file iconPDF (328 KB)  
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  • Discussion on ¿Protection of station equipment against lightning¿

    Publication Year: 1963 , Page(s): 2238 - 2239
    Save to Project icon | PDF file iconPDF (316 KB)  
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  • Discussion on ¿Changing influences in the planning of the grid system¿

    Publication Year: 1963 , Page(s): 2239 - 2240
    Save to Project icon | PDF file iconPDF (240 KB)  
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  • Mechanical analogue of electron spin inversion and maser action with a simple description of maser operation

    Publication Year: 1963 , Page(s): 2241 - 2247
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1655 KB)  

    A simple analysis is given of phenomena such as electron spin resonance, spin-inversion processes and maser operation in paramagnetic solids. From an examination of the basic equations of motion, a mechanical analogue of these processes is conceived and a working model is described. The model constructed uses a gyroscope suitably driven by electric motors and is capable of demonstrating spin reson... View full abstract»

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  • Assessment of tests for the evaluation of thermal endurance of varnished fabrics

    Publication Year: 1963 , Page(s): 2248 - 2256
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1097 KB)  

    The existing thermal classification of insulating materials is based on long-term experience. Reliable tests employing accelerated thermal aging are needed to classify new materials and check established ones. A number of individual properties of 14 different types of varnished fabric insulation have been measured, before and after heating. The results have been analysed to find the reliability an... View full abstract»

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  • Behaviour of moist oil-impregnated paper under electric stress

    Publication Year: 1963 , Page(s): 2257 - 2266
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1097 KB)  

    The results of microscopic examination of wet paper impregnated with transformer oil and subjected to electric stress are described, together with the results of life tests upon impregnated paper samples of moisture content 1¿8% by weight, in the temperature range 20¿80° C. The times to breakdown and discharge inception have been shown to vary between a few seconds and several hundreds of hours... View full abstract»

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  • Ferromagnetic resonance linewidths of nickel ferrite

    Publication Year: 1963 , Page(s): 2267 - 2270
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (493 KB)  

    The paper discusses the wide variations in the published linewidths of the ferromagnetic resonance of stoichiometric nickel ferrite and shows that, to a large extent, this variation could be explained by variations in the detailed methods of preparation. Values are given for the resonance linewidth as a function of the sintering temperature and oxygen pressure, where a minimum value of the linewid... View full abstract»

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  • Superconductive windings in power transformers

    Publication Year: 1963 , Page(s): 2271 - 2279
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1116 KB)  

    The superconducting elements exclude all magnetic field from their bulk and restrict conduction within a few hundred Ã¥ngstroms of their surface, but there are alloys in which d.c. superconduction occurs in depth. The paper examines the electromagnetic behaviour of both these forms of superconductor, and includes a description of the loss mechanism in hard-alloy superconductors under alternating c... 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.

Full Aims & Scope