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Radio and Electronic Engineer

Issue 2 • February 1970

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Displaying Results 1 - 10 of 10
  • Automatic test systems

    Publication Year: 1970
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (120 KB)

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  • Interconnexion of frequency-division and time-division multiplex transmission systems

    Publication Year: 1970, Page(s):67 - 76
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1008 KB)

    Multichannel transmission systems are of two general types: frequency-division multiplex (f.d.m.) and time-division multiplex (t.d.m.). In order to interconnect a t.d.m. system with an f.d.m. system, it is not necessary to demodulate each channel to audio frequencies. An amplitudemodulated t.d.m. signal can be converted to f.d.m. by gating it to a bank of band-pass filters, each passing one harmon... View full abstract»

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  • Design for a multi-input binary adder

    Publication Year: 1970, Page(s):77 - 80
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (403 KB)

    The need often arises in digital systems for a fast multi-input adder capable of adding together n distinct serial binary numbers. The normal design method is to employ a parallel-series configuration of 2-input synchronous adders. It is shown how the overall speed of a multi-input adder may be enhanced using a 3-input adder stage. A circuit is described using cascaded 2- and 3-input synchronous a... View full abstract»

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  • Transient behaviour and characteristics of the high-field domain in Gunn-effect diodes

    Publication Year: 1970, Page(s):81 - 96
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1895 KB)

    Quasi-linear equations are used to analyse characteristics of a high-field domain in Gunn-effect bulk semiconductors. The analysis shows that the differential mobility appearing in the relaxation time of the large-signal analysis is not the same as that used in the small-signal analysis. It is also shown that an equivalent admittance of domain is represented by a parallel connexion of capacitance ... View full abstract»

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  • A sealed-off beryllia tube argon ion laser

    Publication Year: 1970
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1963 KB)

    An argon ion laser is described in which the discharge is confined by a beryllia capillary tube. This has enabled the current density in the discharge to be increased to more than 600 A cm¿2 with negligible gas cleanup. Sealed-off lasers have been life tested for more than 1000 hours without the need for a gas replenishing system and have shown less than 10% change in output. The total output of ... View full abstract»

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  • Coherent light scattering measurements on single and cladded optical glass fibres

    Publication Year: 1970, Page(s):105 - 111
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (737 KB)

    This paper considers the scattering, at normal incidence, of a laser beam by single and cladded optical glass fibres with a view to estimating their radii and refractive indices. For parallel and perpendicular polarizations of the incident light, the scattered intensity was calculated using the wave theory. The scattering pattern from a single fibre was also calculated by geometrical optics. The l... View full abstract»

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  • Weighing vehicles in motion

    Publication Year: 1970
    IEEE is not the copyright holder of this material | PDF file iconPDF (158 KB)
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  • Reply: Weighing vehicles in motion

    Publication Year: 1970
    IEEE is not the copyright holder of this material | PDF file iconPDF (158 KB)
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  • Advertisements in the Journal

    Publication Year: 1970
    IEEE is not the copyright holder of this material | PDF file iconPDF (158 KB)
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  • Automatic, on-line calibration of flowmeters

    Publication Year: 1970, Page(s):113 - 119
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (858 KB)

    This paper describes a method of calibrating digital output flowmeters of the turbine meter type whilst the meters are in use. No interruption of the metering process is involved during calibration. In the specific application for which the system was designed, the volumes of batches of refined petroleum products `shipped¿ in an oil pipeline are metered to an accuracy of 0.05%. Meter calibration ... View full abstract»

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