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Radio and Electronic Engineer

Issue 3 • Date March 1963

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Displaying Results 1 - 14 of 14
  • Electronics and productivity

    Publication Year: 1963
    IEEE is not the copyright holder of this material | PDF file iconPDF (123 KB)
    Freely Available from IEEE
  • The fisheries application of sonar

    Publication Year: 1963, Page(s):201 - 204
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (550 KB)

    Sonar has proved invaluable in pelagic fisheries as a direct detector of fish. In demersal fisheries the value of sonar except in Arctic cod fisheries is still mainly indirect¿its chief value is for navigation and determination of the type of sea bed. Real advance seems to depend on methods which will improve definition and interpretability really substantially¿to the stage of giving some sort o... View full abstract»

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  • Points from the discussion on "The fisheries application of sonar"

    Publication Year: 1963, Page(s):204 - 206
    IEEE is not the copyright holder of this material | PDF file iconPDF (942 KB)
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  • A survey of the techniques evolved for the measurement of position in numerically controlled machine tools

    Publication Year: 1963, Page(s):207 - 223
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (6900 KB)

    The techniques described are divided into analogue and digitalmethods and the two categories are further subdivided where it is consideredlogical. The inherent sources of error in machine tools are briefly discussedand the basic types of control system are explained before enteringinto the detailed discussion of the transducers. View full abstract»

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  • Points from the discussion on "A survey of the techniques evolved for the measurement of position in numerically controlled machine tools"

    Publication Year: 1963
    IEEE is not the copyright holder of this material | PDF file iconPDF (74 KB)
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  • Visual detection in intensity-modulated displays

    Publication Year: 1963, Page(s):225 - 240
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1780 KB)

    In a two-dimensional intensity-modulated display such as theplan position indicator used in radar systems, the observer is looking forand recognizing the signal as an area, or pattern, of brightness differingfrom that of the surround. By using a closed circuit television system it waspossible to reproduce the essential features of this type of display whilsthaving complete control over the importa... View full abstract»

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  • The electronic heat-camera in medical research

    Publication Year: 1963, Page(s):241 - 250
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1904 KB)

    The first part of the paper describes early work on determining skin temperatures by detecting and measuring infra-red radiation. The results of recent measurements have been related to the presence of growths and other conditions beneath and upon the skin. Possibilities exist for reflection spectroscopy by relating the wavelength of the reflected radiation to the constitution of the surface. Pict... View full abstract»

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  • Teaching transistor theory and applications

    Publication Year: 1963, Page(s):251 - 256
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (804 KB)

    Methods of presenting transistor theory in the final year of an engineering degree course are described. After introducing small-signal theory, temperature and h.f. effects are covered and the treatment of relaxation-type circuits presented in terms of charge-control parameters. Reference is made to suitable supporting experiments. View full abstract»

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  • Transistor and semiconductor teaching

    Publication Year: 1963, Page(s):257 - 261
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (476 KB)

    The starting point for teaching transistors must depend on the type of student. For all students, including technicians, who have to study transistors it is desirable that some kind of physical picture, however simple, be given. One way of doing this, based on a two-diode concept of the transistor, is suggested inthe first part of the paper. For the degree or diploma student who will ultimately be... View full abstract»

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  • Circuits with time-varying parameters (modulators, frequency-changers and parametric amplifiers)

    Publication Year: 1963, Page(s):263 - 271
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (884 KB)

    It is shown that the theory of circuits with time-varying parameters may be presented in a manner sufficiently simple for undergraduate instruction, and that the basic conceptions of modulators with complex impedances and of parametric amplifiers may thus be made clear. Moreover, the treatment is general in nature, and so brings out the similarities and differences between circuits with time-varyi... View full abstract»

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  • Driverless tractors for materials handling

    Publication Year: 1963, Page(s):273 - 275
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (645 KB)

    Tractors have been developed which are capable of carrying goods or towing trailers from one location to another without employing a driver.A buried conductor carrying a low frequency current provides the means of guidance.The tractors are able to make the right decisions at points where alternative routes may b followed in order to arrive at their correct destinations.The problems of designing a ... View full abstract»

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  • Stability and power gain of linear two-port active networks

    Publication Year: 1963
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (138 KB)

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  • Visual displays of integrated video waveforms

    Publication Year: 1963, Page(s):277 - 284
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (945 KB)

    The operation of single loop and double loop video integratorsis discussed briefly and a qualitative measure of integrator performance is given in terms of a simple video signal/noise ratio. A description is given of a set of pulse detectability experiments which have been conducted using a single trace display of the integrator output. A ¿peak level¿ criterion of detection was used in these exp... View full abstract»

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  • Points from the discussion on "Visual displays of integrated video waveforms"

    Publication Year: 1963
    IEEE is not the copyright holder of this material | PDF file iconPDF (56 KB)
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