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# Electrical Engineers, Proceedings of the Institution of

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Displaying Results 1 - 22 of 22
• ### High-speed ferrite-core storage system

Publication Year: 1964, Page(s):1501 - 1510
| | PDF (1302 KB)

A high-speed random-access ferrite-core storage system is described, designed for use in faster computing machines of the future, and in other applications such as pulse sortersÂ¿ and bufferÂ¿ stores. A storage system of this type, of 1024 words, 25 bits each, using one core per bit and a partial switching technique has been simulated and tested. The system tested, which employs ferrite cores wi... View full abstract»

• ### Backward diodes as microwave detectors

Publication Year: 1964, Page(s):1511 - 1516
| | PDF (689 KB)

This paper examines the potential of pulse-bonded germanium backward diodes as microwave detectors. Use is made of I/V relationships derived from both theoretical considerations and measurements on larger area alloyed diodes, in estimating the l.f. short-circuit current sensitivity in the unbiased state, from which it is deduced that the signal/noise performance (tangential sensitivity) at Xband s... View full abstract»

• ### Gain and directional properties of three- and four-frequency parametric devices

Publication Year: 1964, Page(s):1517 - 1522
Cited by:  Papers (2)
| | PDF (759 KB)

An examination is made of the properties of three- and four-frequency parametric devices using nonlinear resistance, capacitance and inductance, pumped at the same frequency but at different phase angles, more conventional parametric amplifiers and convertors being treated as special cases. It is shown with the aid of an equivalent circuit that there are fundamental differences between three-frequ... View full abstract»

• ### Effect of weather on performance of an 8mm radar

Publication Year: 1964, Page(s):1523 - 1533
| | PDF (1226 KB)

The signal strength of echoes from a target (at a range of 2Â¿ miles over a sea path) were recorded over a period of two years and subsequently analysed to give the probability of fades greater than certain values. At the same time the rain-intensity rÃ©gime was examined using several types of rain recorder. The results are given in the form of graphs showing the average frequency per year that a ... View full abstract»

• ### Atmospheric radio noise and signals received on directional aerials at high frequencies

Publication Year: 1964, Page(s):1534 - 1540
| | PDF (945 KB)

Results are presented of amplitude-probability-distribution measurements of atmospheric radio noise received simultaneously on a vertical monopole and on horizontal rhombic aerials at a site in Singapore. Observations were taken at frequencies close to those for which the directional aerials were normally used to receive commercial signals, and by choosing observation periods in relation to thunde... View full abstract»

• ### Results of noise measurements on an operational s.h.f. radio link

Publication Year: 1964, Page(s):1541 - 1545
Cited by:  Papers (1)
| | PDF (650 KB)

The CCITT and CCIR have recommended to administrations at various times since 1957 the measurement of certain characteristics of the noise in telephone and television channels routed over s.h.f. radio-relay systems, with particular reference to variations in the noise which might arise from fading or other effects of the propagation path. An extended series of measurements on an s.h.f. radio link ... View full abstract»

• ### Trigger mechanism and sensitivity in cold-cathode tubes

Publication Year: 1964, Page(s):1546 - 1550
| | PDF (613 KB)

Although cold-cathode trigger tubes are widely used in computer and control circuits, their firing mechanism is not completely understood, particularly when a capacitor is connected between the trigger and cathode. The paper describes an investigation of the firing mechanism with d.c. input circuits of high impedance. At breakdown of the trigger-cathode gap, relaxation oscillations occur, and it w... View full abstract»

• ### Characteristic impedance of two special forms of transmission line

Publication Year: 1964, Page(s):1551 - 1555
Cited by:  Papers (2)
| | PDF (455 KB)

Two specialised forms of transmission line which have been used in the past are, firstly, one in which the two conductors are opposing arcs of a circle and, secondly, one consisting of a thin strip in a rectangular outer tube. Exact theoretical solutions for the characteristic impedances have been found for infinitely thin (perfect) conductors, and corrections are given which show the effect of fi... View full abstract»

• ### Q band ferrite isolator for the circular TE01 wave mode

Publication Year: 1964, Page(s):1556 - 1561
| | PDF (641 KB)

The paper discusses possible configurations of ferrite elements for application to an 8 mm isolator operating in the circular TE01 mode. It is concluded that, when using this wave mode at such a frequency, there is one configuration that offers particular advantagesÂ¿namely that of an eccentrically mounted rod of a highly anisotropic ferrite transversely magnetised to give gyromagnetic resonance a... View full abstract»

• ### L.F. discriminator of improved linearity

Publication Year: 1964, Page(s):1561 - 1563
| PDF (245 KB)
• ### Chart for the half-power frequencies of low-pass networks having Cheby - shev response

Publication Year: 1964, Page(s):1563 - 1564
| PDF (329 KB)
• ### Note on signal combination

Publication Year: 1964
| PDF (219 KB)
• ### Survey of basic stray losses in squirrel-cage induction motors

Publication Year: 1964, Page(s):1565 - 1574
Cited by:  Papers (8)
| | PDF (1326 KB)

A study of the literature reveals that there is still considerable confusion on various aspects of stray losses, particularly with regard to their definition and origin. Accordingly the theoretical information is presented in a rationalised and systematic way to obtain a fully comprehensive approach, based on classifying stray losses into two groups, namely those due to main flux variations (stray... View full abstract»

• ### Numerical techniques in solution of power-system load-flow problems

Publication Year: 1964, Page(s):1575 - 1588
Cited by:  Papers (16)
| | PDF (1758 KB)

The literature describing methods of analysis suitable for use with electronic digital computers in the power-system load-flow problem has grown until the papers can now be numbered in hundreds. This paper presents a classification that can be applied to all methods, with theory and discussion of the important problems of acceleration of the solution, criteria for convergence and of the inherent d... View full abstract»

• ### Discussion on flashover of polluted insulation

Publication Year: 1964, Page(s):1589 - 1592
| PDF (595 KB)
• ### Discussion on 'Focal-point protection system for power reactors'

Publication Year: 1964, Page(s):1593 - 1596
| PDF (613 KB)
• ### Some comparisons of power-measuring standards at 300 and 400 Mc/s

Publication Year: 1964, Page(s):1597 - 1601
Cited by:  Papers (1)
| | PDF (481 KB)

The paper describes the comparison of coaxial power-measuring standards developed in the United Kingdom with transfer standards from the United States and Japan, at 300 and 400 Mc/s. The average difference between the US and UK values was 0.2%; and that between the Japanese and UK values was 2.1%. The differences are less than the combined limits of error claimed for the instruments being compared... View full abstract»

• ### Theory of a ferromagnetic heat engine

Publication Year: 1964, Page(s):1602 - 1606
| | PDF (545 KB)

A ferromagnetic wheel may be made to do mechanical work if the rim is passed through a magnetic field and a source of heat. The theory of this device is developed, first when the wheel is paramagnetic, and then for the ferromagnetic case. Expressions for the efficiency, work done per revolution and mean torque are derived for the general case. Relatively high torques are possible. For an iron whee... View full abstract»

• ### Time-domain matrix analysis of nonlinear hybrid control systems

Publication Year: 1964, Page(s):1607 - 1614
| | PDF (727 KB)

The paper describes a numerical method using time-domain matrixes for evaluating the response of nonlinear discrete-continuous systems to deterministic inputs. The concept of generating matrixes introduced in the paper provides a powerful tool for the analysis of such systems. The method may be applied to systems containing continuous elements of any order, discrete elements of any order, synchron... View full abstract»

• ### Discusion on simulator assessment of tandem cold-rolling-mill automatic gauge-control systems

Publication Year: 1964, Page(s):1615 - 1618
| PDF (561 KB)
• ### Sources of ionisation in high-pressure gases above 2000Â°K

Publication Year: 1964, Page(s):1619 - 1623
Cited by:  Papers (1)
| | PDF (729 KB)

Previous experiments with inert gases at high pressure between coaxial graphite electrodes, at temperatures above 2000Â° K, have shown unexpectedly high electrical conductivities for quite small voltages across the electrodes. In the present experiments the influences of electrode geometry and supply frequency are examined, and the gas pressure is steadily reduced until the classical regions of lo... View full abstract»

• ### Proton-synchrotron development in Britain

Publication Year: 1964
| PDF (146 KB)

## Aims & Scope

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

Full Aims & Scope