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Radio and Electronic Engineer

Issue 2 • Date 1967

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Displaying Results 1 - 9 of 9
  • The national electronics council

    Publication Year: 1967
    IEEE is not the copyright holder of this material | PDF file iconPDF (130 KB)
    Freely Available from IEEE
  • Design and control of a high precision electron beam machine

    Publication Year: 1967, Page(s):83 - 96
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1418 KB)

    A two-lens electron beam machine is designed to give maximum power density in spot diameters ranging from 1.5 ¿m to 10 ¿m. The beam is deflected in a raster and modulated by a simple pattern generator. The design and performance of the electron optical system and the present control equipment are discussed together with a proposal for an on-line computer control system View full abstract»

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  • Characteristics of varactor diodes at low temperatures

    Publication Year: 1967
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (876 KB)

    An experimental investigation of varactor diode junction properties at low temperatures has been performed. Both elemental and compound type diodes have been examined, including two silicon varactors produced by different doping techniques and a diffused mesa-type gallium arsenide varactor. The diode spreading resistance is calculated from Q-factor measurements with an appropriate correction appli... View full abstract»

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  • Phase-shifting networks using field effect transistors

    Publication Year: 1967, Page(s):105 - 112
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (834 KB)

    The use of the field effect transistor in the below pinch-off mode as a variable resistor permits a wide range of phase shifting networks, filters and variable frequency oscillators to be constructed. The technique is fully compatible with integrated circuit technology and the properties of the circuits so produced are only moderately temperature-dependent. View full abstract»

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  • Computer control of the manufacture of electron beam processed microelectronic modules

    Publication Year: 1967, Page(s):113 - 122
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (5782 KB)

    The characteristics of the electron-beam machine as a welding and cutting tool lend themselves to computer-controlled operation. The paper describes such a combination used to produce a specially-designed microelectronic package. The aim of the system design was to allow the package to be made precisely to the user's requirements by merely reprogramming the computer. Electron-beam techniques are d... View full abstract»

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  • A precision voltage-controlled time delay circuit

    Publication Year: 1967, Page(s):123 - 128
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (503 KB)

    A transistor circuit is described in which the time delay between a trigger pulse and the output pulse, is directly proportional to a control voltage over a 100 : 1 range. The delay circuit is synthesized from circuits performing the functions of ramp generation, voltage comparison and switching. The circuit uses matched dual planar transistors to achieve a temperature coefficient of 0.0025% per d... View full abstract»

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  • TheUK-3satellite and its ground check-out equipment

    Publication Year: 1967, Page(s):129 - 141
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2424 KB)

    An outline of the electrical design of the UK-3satellite is followed by a statement of the philosophy governing the design of the ground check-out equipment. The principal functions of the latter are described under the general headings of: (1) Test equipment for use close to the satellite. (2) The trailer-mounted data processing and recording station. Among the units specially developed for UK-3,... View full abstract»

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  • The Karnaugh map and counting circuits

    Publication Year: 1967, Page(s):142 - 143
    IEEE is not the copyright holder of this material | PDF file iconPDF (195 KB)
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  • Graphical derivation of trajectories for simple RߝC networks containing a non-linear resistance element with a negative resistance region

    Publication Year: 1967
    IEEE is not the copyright holder of this material | PDF file iconPDF (111 KB)
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