Journal of the British Institution of Radio Engineers

Journal of the British Institution of Radio Engineers

Online ISSN 2054-054X
Print ISSN 0538-0022

Published from 1939-1962, the Journal of the British Institution of Radio Engineers presented the proceedings of meetings held by that Institution on the science, art and practise of radio engineering.

This journal was previously known as Radio and Electronic Engineer 1963-1984. ISSN 0033-7722. more..

This journal was previously known as Proceedings of the British Institution of Radio Engineers 1963-1964. ISSN 2050-2664. more..

This journal was previously known as Proceedings of the Indian Division of the British Institution of Radio Engineers 1963-1963. ISSN 2278-7224. more..

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International journal - national proceedings
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- p. 425 (1)
The control of nuclear power reactors by means of magnetic amplifiers
- Author(s): M.J. Craddock and J.A. Purdie
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- p. 427 –439 (13)
  Magnetic amplifiers are suitable for use as amplifying elements in the main temperature control loops of nuclear power reactors. The control problems encountered are discussed and a basic temperature controller and three practical designs based on this controller are de scribed. An indication of the expected reliability of these systems is given, based on experience with similar amplifiers in aircraft applications.
A High-speed echo-sounder recorder having seabed lock
- Author(s): R.W.G. Haslett
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- p. 441 –452 (12)
  An electro-mechanical recorder giving an intensity-modulated record on dry paper is described which indicates the presence of fish within 1½ fathoms of the seabed (i.e. under the headline). Experiments were made with several possible types of triggered recorder to determine the best design, also with various signal delays required for seabed lock. Details are given of the moving-iron recorder, finally adopted, which displays a range of 4 fathoms with high accuracy across paper 6 in. wide. A magnetic drum storage system (described in an associated paper con cerning the complementary c.r.t. display), is employed.These displays form part of a comprehensive fish-detection equipment of improved acoustic performance, for use on distant-water trawlers.
Artificial cardiac pacemakers for the long-term treatment of heart block
- Author(s): J.G. Davies
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- p. 453 –456 (4)
  Electronic cardiac stimulators using blocking oscillators are described. The units operate (1) through wires from an external unit, (2) internally with external power supply and (3) as a completely sell-contained implanted unit which can be controlled from outside the body by inductive pick-up.
The fundamental importance of the Heaviside operational calculus
- Author(s): W. Proctor Wilson ; C.G. Mayo ; J.W. Head
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- p. 461 –477 (17)
  It is an essential part of Heaviside's operational calculus that the symbol p is an operator equivalent to d/dt and that p and p⁻¹ the inverse or integrating operator, are commutative. This is ensured if the operation of integration is not confused with the operation of selection, i.e. if the lower limit of integration is taken as minus infinity, and is only raised to a finite value when we are sure that this change has no effect. We have first set forth in as explicit a manner as possible what we believe to be the basis of Heaviside's own work, with particular attention to the properties of the unit function H(t) and the way in which differentiation and integration can be extended to include functions containing H(t) or its derivatives as factors. A continuous function approximating to H(t) is considered in an Appendix. The kinds of function (of time) that can occur in nature are carefully considered; the case of both passive and active networks is discussed. Heaviside's contemporaries were not prepared to accept his premises and methods even if they were forced to accept his results. The relation between Heaviside's calculus and Fourier analysis, symbolic calculus and Laplace transforms is therefore considered; the advocates of symbolic calculus and particularly of Laplace transforms have introduced difficulties and even errors which need not have occurred if they had followed Heaviside more faithfully.The full power and universality of Heaviside's approach (in which the mathematics was always subordinate to the physics) is made clear in Section 4, where the relation between input and output is considered for any system, not necessarily electrical; this relation is expressed by a single operational equation, but there are several possible ways of handling that equation and it is important not to choose too early which of these ways should be used.‡

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