Home
>
Journals & magazines
>
Proceedings of the Institution of Electrical Engi...
>
Volume 120
Issue 2
Proceedings of the Institution of Electrical Engineers
Volume 120, Issue 2, February 1973
Volumes & issues:

Volume 126 (1979)

Volume 125 (1978)

Volume 124 (1977)

Volume 123 (1976)

Volume 122 (1975)

Volume 121 (1974)

Volume 120 (1973)

Volume 119 (1972)

Volume 118 (1971)

Volume 117 (1970)

Volume 116 (1969)

Volume 115 (1968)

Volume 114 (1967)

Volume 113 (1966)

Volume 112 (1965)

Volume 111 (1964)

Volume 110 (1963)
Volume 120, Issue 2
February 1973
Determination of vocaltractarea function from transfer impedance
 Author(s): E.V. Stansfield and R.E. Bogner
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 153 –158
 DOI: 10.1049/piee.1973.0034
 Type: Article
 + Show details  Hide details

p.
153
–158
(6)
A procedure is described for calculating the crosssectional area of the vocal tract from the magnitude of its transfer impedance when the lips are resistively terminated. The process is noniterative and 5 kHz of line spectrum with normalpitch frequency spacing contains sufficient information for the synthesis to be performed. The synthetised area functions are unique, and are good approximations to smoothed versions of the actual area functions. Areafunction data of Fant are used to test the procedure.
Radiometer measurements of atmospheric attenuation at 19 and 37 GHz along SunEarth paths
 Author(s): P.G. Davies
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 159 –164
 DOI: 10.1049/piee.1973.0035
 Type: Article
 + Show details  Hide details

p.
159
–164
(6)
The measurements of attenuation described in the paper refer to data recorded over a 3year period at a frequency of 19 GHz, and over a 1year period at 37 GHz. The relevance of these data to Earthspace communication links is discussed. Statistics showing the percentage of observation time for which the attenuation exceeds various values are given for each year for various ranges of elevation angle. At 19 GHz, the values of attenuation obtained from the extreme annual distributions differ by a factor of about two at a given percentage of time. Also, the percentage of time for which the attenuation at 19 GHz exceeded 10 dB for the ‘worst’ month is an order of magnitude larger than the corresponding value for the 3year period. Statistics derived from data obtained during periods of common observation at 19 and 37 GHz are compared for various ranges of elevation angle. Histograms showing the number of fades as a function of the duration of the fade are presented for both frequencies for fades greater than 5 and 10 dB, and a comparison of the instantaneous values of attenuation at 19 and 37 GHz at fade maxima has been made.
Transhorizon propagation on v.h.f. and u.h.f. radio links in the United Kingdom
 Author(s): I.E. Owolabi and J.A. Lane
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 165 –172
 DOI: 10.1049/piee.1973.0036
 Type: Article
 + Show details  Hide details

p.
165
–172
(8)
An analysis has been made of v.h.f. and u.h.f. transmission data on 65 overland links of up to 400 km in length in the United Kingdom. The analysis reveals that the field strength exceeded for 1% of the time is significantly greater than that predicted by CCIR recommendation 3701, especially for band III (150–250 MHz), but also to some extent for band I (41.68 MHz). A detailed analysis is made of several transmission links in which the factors distance, antenna height, terrain irregularities and meteorological condition were very similar, but the operating frequencies were different. The results of the detailed analysis are interpreted in terms of reflection theory using a 4ray model. The layer heights at which partial reflection gives enhancements of bandIII transmissions similar to those observed experimentally are found to correspond approximately to atmospheric layers of maximum lapse rate of refractive index, as computed from meteorologicalradiosonde observations.
Transmission loss at high frequencies on 3260 km temperatelatitude path
 Author(s): P.A. Bradley and D.R. Howard
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 173 –180
 DOI: 10.1049/piee.1973.0037
 Type: Article
 + Show details  Hide details

p.
173
–180
(8)
Measurements of the pulse modal patterns and receivedsignal strengths were made at frequencies of 9.9, 17.5 and 23.0 MHz over a 3260 km path from Akrotiri, Cyprus to Slough, England for 12 months during 1968–69 at sunspot maximum. The principal modes of propagation involved one and two reflections from the F2 layer. The obliquepath ionospheric absorptions are estimated from the signalstrength data by allowing for all other transmissionloss factors. The absorptions so deduced are compared with those given by various published formulas.
Scattering by perfectly conducting rotational bodies of arbitrary form excited by an obliquely incident plane wave or by a linear antenna
 Author(s): A. Hizal ; A. Hizal ; Z. Yasa
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 181 –182
 DOI: 10.1049/piee.1973.0038
 Type: Article
 + Show details  Hide details

p.
181
–182
(2)
An algorithm based on the rigorous sphericalwaveexpansion method is developed that is capable of treating rotational bodies excited by an obliquely incident plane wave or a thin linear antenna. The algorithm is used to compute the scattering behaviour of various rotational objects, such as conespheres, discs, finite cylinders, spheroids and some other shapes.
Nearfield technique for inferring aperture antenna radiation patterns
 Author(s): A.R. Jamieson and R.H.T. Bates
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 183 –185
 DOI: 10.1049/piee.1973.0039
 Type: Article
 + Show details  Hide details

p.
183
–185
(3)
The method of Brown and Jull for inferring the far field from the near field has been extended to arbitrary antennas, with measurements made in one plane only. The primary concern has been with aperture antennas. The theory of the computational reduction of the measured data has been obtained. The results of a practical application of this nearfield technique (n.f.t.) to a circularwaveguideaperture antenna are described. The modal distribution in the waveguide aperture is estimated. This distribution has been substituted into a variational expression for the waveguide admittance. The result is close to the measured value, thereby confirming the accuracy of the n.f.t.
Microwave data link for computer communication
 Author(s): A.C. Peatfield ; H.J. Sherman ; A.J. White ; B. Zacharov
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 186 –190
 DOI: 10.1049/piee.1973.0040
 Type: Article
 + Show details  Hide details

p.
186
–190
(5)
An experiment is described in linking to a large digital computer at data rates in the order of 10^{7} bit/s. The system is based on standard British Post Office microwave equipment and well established highspeed wire links; the interface between the two sections uses the CAMACsystem convention. The total system is described, and details are given of some of the equipment not previously published. Important features of the system are the termination of both ends of the link in a highlevellanguage module (in this case PL1), executing in a multiprogramming operating system, and corrected error rates better than 1 bit in 10^{9}.
Application of timeseries algebra to the adaptive equalisation of bandlimited waveformtransmission systems
 Author(s): J.B. Potter
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 191 –196
 DOI: 10.1049/piee.1973.0041
 Type: Article
 + Show details  Hide details

p.
191
–196
(6)
Using timeseries algebra, the operation of adaptive equalisers for both minimummeansignalerror and minimummeansquareerror criteria are considered, and the convergence properties of the iterative procedures generally used are discussed. It is pointed out that, in any practical situation, the control criterion and the iterative algorithm to be used, must be selected to provide the desired performance over the range of situations likely to be encountered. The effect of the equaliser on the regeneratorinput signal/noise ratio is also considered, and this, together with the economic need to minimise the equaliser length, is shown to lead to a requirement to select the reference sampling point accordingly. One selection algorithm is described, and its operation is demonstrated in an example.
Millimetrewave generator that uses a spiralling electron beam
 Author(s): A.H.W. Beck and W.P.C. Mills
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 197 –205
 DOI: 10.1049/piee.1973.0042
 Type: Article
 + Show details  Hide details

p.
197
–205
(9)
A millimetrewave generator that uses a helical electron beam spiralling around the axis of a nearly square waveguide is described. The frequency of gyration round the axis is made equal to onehalf of the signal frequency, thus halving the longitudinal magnetic field by comparison with those of cyclotron devices. Power outputs in excess of 2W at Q band wavelengths have been achieved with lowcurrent, highvoltage beams, but the most important feature of the device is that the same electrooptical system can be used at considerably shorter wavelengths, for example λ = 2 mm. A brief historical introduction describes the development of this tube in relation to the better known cyclotron tubes.
Precision hardware circulararc generation for computer graphicdisplay systems using linesegmentdata
 Author(s): G. Hughes and H.C.A. Hankins
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 206 –212
 DOI: 10.1049/piee.1973.0043
 Type: Article
 + Show details  Hide details

p.
206
–212
(7)
For advanced graphics, it is required that both general and circular functions should be displayed, in addition to alphanumeric and line diagrams. For general functions, software is used, owing to the low frequency of occurrence of general functions on display diagrams. For circular functions, this is not the case, and there is a need for hardware generation with scaling, windowing and scissoring properties. Further, for precision, the circular arc should start and finish exactly on the m × m screen matrix, with points on the drawn arc within one increment of the true arc. This paper describes the generation of arcs by hardware, using successive linesegment data that satisfy the error equations. These errors are derived, and a computer simulation of the hardware logic design is used to analyse the errors and to determine the bit redundancy in the δθ^{2}/2 registers. The final design is capable of generating circular arcs within the prescribed error limits at high generation speeds. The generator may be included in any display system that possesses accurate linedrawing facilities.
Computer technique for solving 3dimensional electronoptics and capacitance problems
 Author(s): A.B. Birtles ; B.J. Mayo ; A.W. Bennett
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 213 –220
 DOI: 10.1049/piee.1973.0044
 Type: Article
 + Show details  Hide details

p.
213
–220
(8)
Electronoptics problems involving planar and axial symmetry are frequently analysed by using iterative procedures to solve Laplace's equation within a specified boundary. The computation time and storage requirement for these procedures may be prohibitive when it is necessary to extend the analysis to three dimensions for problems involving asymmetric fields. An alternative approach is described, known as the method of moments, which does not use an iterative method, but calculates the field directly from the charges induced on the electrodes by the excitation potentials. This technique provides a further facility, which permits the capacitances between arbitrary 3dimensional electrodes to be obtained. The basic theory and operation of a computer program which employs this method are described. As a practical application, the program has been used to investigate the electronoptical properties of a mesh with rectangular apertures.
IEE Western Centre Electronics & Control Section: Chairman's address. Electrical aspects of aircraft control
 Author(s): H. Hill
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 220 –220
 DOI: 10.1049/piee.1973.0045
 Type: Article
 + Show details  Hide details

p.
220
(1)
Feasibility of turbogenerator with superconducting rotor and conventional stator
 Author(s): H.O. Lorch
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 221 –227
 DOI: 10.1049/piee.1973.0046
 Type: Article
 + Show details  Hide details

p.
221
–227
(7)
In a 660 MW turbogenerator, the losses associated with the rotor total some 4.5 MW, mainly due to direct current in the field winding. The feasibility of saving this by making the winding superconducting is examined. The stator coils carry alternating current, and so they cannot be made superconducting, and, in the concept proposed here, the stator is substantially conventional. The new rotor has no iron, except for shaft ends, and the winding is embedded in an insulating cylinder cooled with liquid helium from a refrigeration plant. The winding is protected from harmful a.c. fields by a copper cylinder which rotates with it. The gap is evacuated, and this screening cylinder is kept cold by thermal conduction in the residual gas to a stationary lowtemperature shield. The machine has high steadystateand transientstability margins, and the need for rapid field changes is greatly diminished The new rotor allows the present stator to be uprated. The economic advantage of the machine, taking refrigeration into account, depends on the degree of uprating found possible, and is in the range £290 000–£830 000 for an output range of 660–1000 MW. Many problems, particularly of a mechanical nature, remain to be solved, but none appears insuperable.
Opencircuit voltage decay of a turbogenerator
 Author(s): H. Yee and T. Wilson
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 228 –232
 DOI: 10.1049/piee.1973.0047
 Type: Article
 + Show details  Hide details

p.
228
–232
(5)
The decay of terminal voltage of an unexcited turbogenerator, following its disconnection from the a.c. busbars, is determined analytically. It is shown that, because of eddy current in the solid rotor, an infinite number of exponentialdecay terms are required to describe the voltage decay. Results obtained theoretically are compared with those of tests carried out by the Central Electricity Generating Board at Northfleet, and good agreement is obtained. Of particular interest are the large quadratureaxis time constants evident in both theoretical and experimental studies.
IEE Mersey & North Wales Power Section: Chairman's address. Switchgear progression
 Author(s): E.D. Higgins
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 232 –232
 DOI: 10.1049/piee.1973.0048
 Type: Article
 + Show details  Hide details

p.
232
(1)
Improvement of turbogenerator transient performance by control means
 Author(s): F.M. Hughes
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 233 –240
 DOI: 10.1049/piee.1973.0049
 Type: Article
 + Show details  Hide details

p.
233
–240
(8)
The availability of electric governors and the provision for continuous control over the turbine interceptor valves, in addition to the highpressuresteam valves, present a readily controllable, fastresponse turbinepoweroutput system. This paper looks at the capability of such a system for improving turbogenerator transient performance for both large and small disturbances. The performance capabilities of excitation control are also considered for comparison.
New temperature test for synchronous machines
 Author(s): W. Fong
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 241 –242
 DOI: 10.1049/piee.1973.0050
 Type: Article
 + Show details  Hide details

p.
241
–242
(2)
A novel temperaturetest method for synchronous machines is described. The test machine is operated either as a motor at no load or as a generator supplying a reactive load, both with rated field excitation, while a second source is applied to cause full r.m.s. current to circulate in the armature winding. The test simulates a true temperature test in every respect, and is of special value for machines rated at power factors above 0.9. The new test may additionally be used to determine the machine efficiency at rated load.
Simplified universalcommutator electric motor
 Author(s): H. Aslan and M. Oprişan
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 243 –244
 DOI: 10.1049/piee.1973.0051
 Type: Article
 + Show details  Hide details

p.
243
–244
(2)
The paper presents a universalcommutator motor of less than 1 kW power, the construction of which is different from that of the classical motor, both in the winding and in the lamination positions. The performances of experimental models and the economical advantages of this type of motor are presented.
Powerfactor compensation of thyristorcontrolled singlephase load
 Author(s): W. Shepherd and P. Zakikhani
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 245 –246
 DOI: 10.1049/piee.1973.0052
 Type: Article
 + Show details  Hide details

p.
245
–246
(2)
It is found that an effective way to obtain a, good power factor with a thyristorcontrolled load is to use a parallelconnected uncontrolled resistive load of similar rating. The use of parallelconnected capacitance alone gives no significant degree of powerfactor improvement, even when the capacitance is adjusted to the optimum value for each step of thyristor firing angle.
Improvement of powersystem transient stability by phaseshift insertion
 Author(s): D. O'Kelly and G. Musgrave
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 247 –252
 DOI: 10.1049/piee.1973.0053
 Type: Article
 + Show details  Hide details

p.
247
–252
(6)
Computational studies of the transient stability of a synchronous machine connected to an infinite busbar by a doublecircuit transmission line are used to illustrate the effect of relative phaseshift insertion between the machine and its associated power system. This method of obtaining a change in the effective rotorexcitation angle, and thereby the power transfer, is described, together with an outline of possible methods of implementation by a phaseshifting transformer in a power system.
IEE NorthWestern Utilisation Section: Chairman's address. Less and less about more and more—some aspects of utilisation engineering
 Author(s): W. Howe
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 252 –252
 DOI: 10.1049/piee.1973.0054
 Type: Article
 + Show details  Hide details

p.
252
(1)
Erratum: Safety of household electrical appliances
 Author(s): C.A. Zweigbergk
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 252 –252
 DOI: 10.1049/piee.1973.0055
 Type: Article
 + Show details  Hide details

p.
252
(1)
Transient analysis of underground powertransmission systems. Systemmodel and wavepropagation characteristics
 Author(s): L.M. Wedepohl and D.J. Wilcox
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 253 –260
 DOI: 10.1049/piee.1973.0056
 Type: Article
 + Show details  Hide details

p.
253
–260
(8)
A mathematical model suitable for the analysis of travellingwave phenomena in underground powertransmission systems is presented. The model is developed in terms of a generalised angular frequency, and may therefore be applied to the solution of steadystate problems or, by means of Fouriertransform techniques, to the solution of transient problems. The model takes into account skin effect in the conductors and in the soil. It is then shown how the system model may be analysed using multiconductortransmissionline theory to give the transient response of the cable system. The wavepropagation characteristics are given for the natural modes of a certain cable system. These characteristics are examined with a view to their implications on transient phenomena.
Optical technique for measurement of current at high voltage
 Author(s): A.J. Rogers
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 261 –267
 DOI: 10.1049/piee.1973.0057
 Type: Article
 + Show details  Hide details

p.
261
–267
(7)
Consideration is given to the design of an optical device for the measurement of current at high voltage based on the Faraday magnetooptic effect in flint glass. A laser beam directed upward from the ground passes through the free atmosphere to interrogate a passive transducer situated on the highvoltage line. The beam is then reflected down to a groundbased detector system. The investigation has been directed, in the first instance, towards the provision of a versatile research tool for the analysis of disturbedline conditions, although, ultimately, such an arrangement could obviate the necessity for the expensive and bulky insulation found in conventional current transformers. This is particularly relevant in view of the trend towards higher transmission voltages. The appropriate design features are considered in some detail. Their implementation in a prototype device is also considered. The bandwidth of the prototype device was from direct current to 2 MHz, and its dynamic range for less than 5% nonlinearity was 10–12000 A (these figures are not fundamental and can be varied). The device promises to provide a cheap, accurate and robust currentmeasurement system for various applications in powertransmission networks.
IEE Western Power Section: Chairman's address. A century of overvoltages
 Author(s): D.M. German
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 268 –268
 DOI: 10.1049/piee.1973.0058
 Type: Article
 + Show details  Hide details

p.
268
(1)
Digital simulation for mode identification in thyristor circuits
 Author(s): G.N. Revankar and S.A. Mahajan
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 269 –272
 DOI: 10.1049/piee.1973.0059
 Type: Article
 + Show details  Hide details

p.
269
–272
(4)
The paper deals with the digital simulation of thyristor circuits wherein the exact circuit operation is not known. Two methods for digital simulation of thyristor circuits are presented. In the first, a switching device is assumed to be an ideal switch operated by a logic module. The need for automatic formulation of the network equations at the mode changeover points is explained, and it is shown how to achieve this by using suitable forcing functions. This method requires assignment of proper initial conditions at the mode changeover points. In the second method, a switching device is modelled by a binary resistance. In this case, the problem of initial conditions at the mode changeover points is eliminated. These methods are illustrated with an example.
Degradation mechanisms of mechanical connectors on aluminium conductors
 Author(s): R.D. Naybour and T. Farrell
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 273 –280
 DOI: 10.1049/piee.1973.0060
 Type: Article
 + Show details  Hide details

p.
273
–280
(8)
The factors which affect the performance of mechanical connectors for use on aluminium power cables have been investigated. The initial resistance depends upon surface roughness, mechanical load and degree of plastic deformation. The stability of resistance has been studied under conditions of mechanicalload cycling, stress relaxation, interface oxidation, temperature cycling and current loading. The conditions for designing stable mechanical connectors for use on aluminium conductors are given, and the stability of connectors satisfying these conditions has been illustrated by currentcycling measurements.
Experimental visual prosthesis
 Author(s): P.E.K. Donaldson
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 281 –298
 DOI: 10.1049/piee.1973.0061
 Type: Article
 + Show details  Hide details

p.
281
–298
(18)
Of the methods available which seek artificially to replace the sensory input lost through blindness, the approach which should ultimately be of greatest value is that by which visual information is fed directly to the brain. The paper reviews earlier work in this field and describes a new prosthesis which gives grounds for optimism.
Probability distributions for discrete Fourier spectra
 Author(s): T.S. Durrani and J.M. Nightingale
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 299 –311
 DOI: 10.1049/piee.1973.0062
 Type: Article
 + Show details  Hide details

p.
299
–311
(13)
The paper analyses powerspectrum estimates obtained by fastFouriertransform techniques. Distributions are obtained for data, augmented, where necessary, by sequences of zeros, and the effect of data smoothing on the reliability of the estimates is considered. The effect of segment averaging is analysed and a joint probability distribution is derived for the resulting spectrum estimates. The number of degrees of freedom per estimate can then be directly determined. 1st and 2ndorder moments of logarithmic spectra are derived which lead to confidence bands on the spectral estimates. Frequencydomain smoothing is then considered, and it is shown, that, for specified lengths of Gaussian random data, this, unlike data smoothing, does not lead to a reduction in the number of degrees of freedom. Finally, the general case of frequency smoothing followed by adjacent estimate averaging is analysed. A factor is proposed for assessing loss of stability of such estimates. Computer results are given which demonstrate the effects of several data windows and sets of frequencysmoothing coefficients. Results in the appendixes show that loss in degrees of freedom is related to the eigenvalues of a specific covariance matrix.
Design of Kalman filters using signalmodel output statistics
 Author(s): Hung Le Son and B.D.O. Anderson
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 312 –318
 DOI: 10.1049/piee.1973.0063
 Type: Article
 + Show details  Hide details

p.
312
–318
(7)
The Kalman filter depends only on the output statistics of the message model; a technique for filter construction using only these statistics is given. The performance of the filter is considered, and, for state rather than signal estimation, the performance is found to depend on the details of the model, as distinct from its output statistics.
Computeraideddesign procedure for reducedorder observers. Estimate of entire state vector
 Author(s): N. Munro
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, p. 319 –324
 DOI: 10.1049/piee.1973.0064
 Type: Article
 + Show details  Hide details

p.
319
–324
(6)
A systematic design procedure for reducedorder observers for linear timeinvariant dynamical systems described by statespace equations is presented, using an alternative canonical form to that considered by Luenberger. The algorithm developed is suitable for the case where an estimate of the entire state vector is required, and can be extended to the case where only an estimate of a single linear functional of the state is required. The paper is concerned with the computeraided design of reducedorder observers which will reconstruct an estimate of the entire state vector. The procedure presented is illustrated by an example.
Direct method for transfermatrix inversions
 Author(s): W.E. Thomson ; F.L. NNagy ; A. Uraz
 Source: Proceedings of the Institution of Electrical Engineers, Volume 120, Issue 2, page: 324 –324
 DOI: 10.1049/piee.1973.0065
 Type: Article
 + Show details  Hide details

p.
324
(1)
Most viewed content for this Journal
Article
content/journals/piee
Journal
5
Most cited content for this Journal

Application of fuzzy algorithms for control of simple dynamic plant
 Author(s): E.H. Mamdani
 Type: Article

Effects of eddy currents in transformer windings
 Author(s): P.L. Dowell
 Type: Article

Numerical solution of 2dimensional scattering problems using a transmissionline matrix
 Author(s): P.B. Johns and R.L. Beurle
 Type: Article

Application of matrix methods to the solution of travellingwave phenomena in polyphase systems
 Author(s): L.M. Wedepohl
 Type: Article

The design of wideband transistor feedback amplifiers
 Author(s): E.M. Cherry and D.E. Hooper
 Type: Article