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# Electrical Engineers, Proceedings of the Institution of

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Displaying Results 1 - 25 of 32
• ### Measurements on radiation reflected obliquely from a rough surface

Publication Year: 1963, Page(s):1921 - 1927
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Experiments are described, and their results analysed, of the reflection (at oblique incidence) of microwaves of 8 mm wavelength from a rippled water surface. The surface profile was, to a good approximation, randomly rough, and a series of roughness states, extending from slightly roughÂ¿ to very roughÂ¿ and whose statistical characteristics were known, were used. The time variation of the ampl... View full abstract»

• ### Observations on phase stability of signals from NBA (18 kc/s) panama as received in new zealand

Publication Year: 1963, Page(s):1928 - 1932
Cited by:  Papers (1)
| | PDF (523 KB)

An analysis of observations made over a period of a year shows that the phase changes of the signals from NBA as received in Lower Hutt, New Zealand, have a diurnal pattern but with considerable day-to-day and seasonal variations. It is concluded that, as recorded at present, the signal is not sufficiently stable to be used as a reference for standard frequency measurements. A suggestion is made f... View full abstract»

• ### Performance of V.F. F.M. teleprinter circuits operating over a tropospheric-scatter link

Publication Year: 1963, Page(s):1933 - 1940
| | PDF (998 KB)

The paper describes an investigation undertaken to derive data on which to base estimates of the telegraph performance to be expected over tropospheric-scatter radio links. H. B. Law has shown how the telegraph error rate depends on the signal/noise ratio at the input to the telegraph equipment for the case of a steady signal, and also for the case of one subject to Rayleigh fading. As the signal ... View full abstract»

• ### Application of electronic sector scanning techniques to height-finding radar systems

Publication Year: 1963, Page(s):1941 - 1948
| | PDF (1298 KB)

This paper considers the application of electronic scanning in the vertical plane to provide additional height information for surveillance radar systems. It is shown that, if the electronic scanning rate is made equal to the reciprocal of the pulse duration, this can result in the production of a 3-dimensional radar with a high data rate and several useful facilities for air-traffic surveillance.... View full abstract»

• ### Discussion on "The signalling problems associated with register-controlled automatic telephone exchanges"

Publication Year: 1963, Page(s):1948 - 1949
| PDF (324 KB)
• ### Miniature wide-bandwidth delay line

Publication Year: 1963, Page(s):1950 - 1954
| | PDF (468 KB)

A method of separating the sections of a lumped-constant delay line by means of short-circuited coils has been proposed by V. A. Solov'ev. The paper shows that, using this principle and an improved method of construction, the size of a delay line may be very considerably reduced. The line considered follows conventional delay-line theory closely, but differs considerably in its construction. Small... View full abstract»

• ### Multiple-loop feedback circuits

Publication Year: 1963, Page(s):1955 - 1959
Cited by:  Papers (4)
| | PDF (521 KB)

A new concept, the null-return-difference matrix, is introduced. It is an extension of Tasny-Tschiassny's return-difference-matrix concept and Truxal's null-return-difference concept. In terms of the return-difference and null-return-difference matrices, two new theorems are formulated for multiple-loop feedback circuits. First, it is shown that in any such circuit the closed-loop gain is equal to... View full abstract»

• ### Paramount matrices and realization of resistive 3-port networks

Publication Year: 1963, Page(s):1960 - 1964
Cited by:  Papers (6)
| | PDF (513 KB)

It is shown in the paper that each paramount non-singular matrix of order 3, or alternatively its inverse, may always be ordered into the uniformly tapered form. The network-theory interpretation of this result shows that each resistive 3-port network may be realized by at least one (and sometimes both) of two minimal structures, one with just four vertices and the other one with three independent... View full abstract»

• ### Comparison of orthogonal and block codes

Publication Year: 1963, Page(s):1965 - 1967
Cited by:  Papers (1)
| | PDF (234 KB)

A method is given for comparing binary codes and higher-order codes of the orthogonal type. By choosing codes which have the same message duration, utilise the same bandwidth, and have the same information content, a fair comparison of their performance for different signal/noise ratios can be obtained. An example of this concept is given for a trigonometric code of 32 equally probable messages. View full abstract»

• ### Angular-momentum wattmeter for the 8mm waveband

Publication Year: 1963, Page(s):1968 - 1974
Cited by:  Papers (1)
| | PDF (958 KB)

After a brief historical introduction, the theory of the couple arising from angular momentum carried by a circularly polarized wave is discussed, with particular reference to waves in waveguides. The paper goes on to describe the design and construction of an absolute wattmeter based on this effect and operating in the millimetric waveband. A number of sources of error are then enumerated and dis... View full abstract»

• ### Television X-ray-intensifier sensitivity

Publication Year: 1963, Page(s):1975 - 1978
| | PDF (683 KB)

Papers have been published recently giving measurements of the minimum perceptible diameter of test objects as a function of contrast at various specified X-ray doses. Some data are available for single-stage X-ray intensifiers observed visually and for intensifying systems in which a camera tube is used indirectly to view the output of an intensifier. The present paper reports comparative data fo... View full abstract»

• ### Visibility of small luminance perturbations in television displays

Publication Year: 1963, Page(s):1979 - 1984
Cited by:  Papers (3)
| | PDF (1014 KB)

Measurements of the visibility of small-magnitude luminance perturbations at various parts of the grey scale have been made using television displays. The purpose was to establish whether the measurements made by many workers using optical apparatus could be applied to a television screen used in normal viewing conditions. It was found that, in general, close agreement was obtained. However, the v... View full abstract»

• ### High-voltage mercury-arc switch for heavy-current pulse duty

Publication Year: 1963, Page(s):1985 - 1989
| | PDF (756 KB)

High-power mercury-arc switches for use in thermonuclear experiments have been developed capable of withstanding voltages of up to 75kV and of conducting current pulses of time constant 1 ms and peak amplitude 100kA. The best performance has been obtained with a single-gap switch having a metal anode and a water-cooled mercury cathode, and voltage hold-off of up to 100kV seems to be feasible with ... View full abstract»

• ### Fundamental frequency voltages due to single-phase earth faults on H.V. lines with resistance earthing

Publication Year: 1963, Page(s):1990 - 2000
| | PDF (1112 KB)

The paper is concerned with the relation between neutral earthing resistance, line length and the corresponding voltage produced on the sound phases when a 3-phase radial feeder sustains a single-phase earth fault. Only steady-state conditions are considered. Conventional analytical expressions are modified to produce a graphical presentation of these relationships, and the vector loci of the pote... View full abstract»

• ### Measurement of turboalternator transfer functions using normal operating data

Publication Year: 1963, Page(s):2001 - 2007
Cited by:  Papers (3)
| | PDF (684 KB)

In the paper a general description of the synchronous machine is derived in the form of a block diagram which is particularly suitable for the investigation of control problems in power systems. It is shown that the transfer functions included in the block diagram may be calculated from data collected under normal operating conditions. Finally, a preliminary experimental investigation is described... View full abstract»

• ### Discussion on "Progress in oil-filled cables and their accessories"

Publication Year: 1963
| PDF (110 KB)
• ### Discussion on Â¿A new linear oscillating motorÂ¿

Publication Year: 1963
| PDF (147 KB)
• ### Discussion on "Testing of mechanical joints in aluminium conductors for insulated cables"

Publication Year: 1963, Page(s):2009 - 2016
| PDF (1387 KB)
• ### Discussion on flashovers of air-gaps and insulators

Publication Year: 1963, Page(s):2016 - 2022
| PDF (949 KB)
• ### Discussion on 'Control and safety requirements for the electrical engineering design of the C.E.G.B. nuclear power stations'

Publication Year: 1963, Page(s):2023 - 2027
| PDF (922 KB)
• ### Discussion on "Lightning flashovers on the British grid"

Publication Year: 1963, Page(s):2027 - 2030
| PDF (655 KB)
• ### Discussion on 'Effect of rotor eccentricity on the magnetic field in the air-gap of a non-salient-pole machine'

Publication Year: 1963, Page(s):2030 - 2031
| PDF (286 KB)
• ### The permanent magnet synchronous motor

Publication Year: 1963
| PDF (152 KB)
• ### The permanent magnet synchronous motor

Publication Year: 1963
| PDF (152 KB)
• ### Q-meter measurements on resistors

Publication Year: 1963, Page(s):2033 - 2038
| | PDF (613 KB)

The operation of a Q-meter, in conditions when the circuit Q-factor is very low, has been investigated. Many of the approximations usually valid for high-Q-factor circuits have been shown to lead to large errors for low-Q-factor circuits. The modified formulae valid for all Q-factors have been derived. Particular attention has been paid to substitution methods, both series and parallel, and techni... View full abstract»

## Aims & Scope

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

Full Aims & Scope