By Topic

Radio and Electronic Engineer

Issue 6 • Date December 1970

Filter Results

Displaying Results 1 - 9 of 9
  • Improving communication

    Publication Year: 1970, Page(s):273 - 274
    IEEE is not the copyright holder of this material | PDF file iconPDF (269 KB)
    Freely Available from IEEE
  • Predicting servomechanism dynamic performance variation from limited production test data

    Publication Year: 1970, Page(s):275 - 288
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1348 KB)

    A probabilistic model describing the considerable variation in dynamic performance of a large family of electro-hydraulic servomechanisms is presented. Two fundamentally different techniques are employed to obtain the parameters of the model, both techniques giving very similar results. A third-order dominant transfer function (derived from the production test data) together with high frequency co... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The use of cathode-ray tubes in professional equipment

    Publication Year: 1970, Page(s):289 - 299
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1513 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiple stable state merging a practical approach to the design of asynchronous sequence detectors and similar circuits

    Publication Year: 1970, Page(s):300 - 304
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (558 KB)

    A practical method for reducing and merging the primitive flow table (or state table) of sequential machines is detailed. The method is particularly suited to more complex problems that are to be solved manually. By reducing the size of the primitive flow table at a very early stage in the design, the problems of reduction and merging are considerably simplified for certain types of machine. An ex... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An ultrasonic position sensor for automatic control

    Publication Year: 1970, Page(s):305 - 307
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (339 KB)

    An instrument has been designed and experiments carried out to determine the resolution which may be possible using airborne ultrasonics as a sensing medium. The experiments were conducted using one transmitter and two receivers from which it is shown that a resolution of the order of a 3 mm cube is practicable using a single wide angle radiator and a surrounding cluster of 3 wide angle receptors. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A computer controlled tester for logic networks and a method for synthesizing test patterns

    Publication Year: 1970, Page(s):309 - 315
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (831 KB)

    This paper describes a total test system for logic networks as manufactured for digital electronic equipment. The system provides a means of physically testing the manufactured item together with a method for preparing test data automatically using a computer. The method uses sensitive path techniques with forward and reverse simulation of a software model of the network which is held in the compu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The visualization of ultrasound in solids

    Publication Year: 1970, Page(s):316 - 320
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1084 KB)

    In order to improve ultrasonic testing methods, a highly sensitive Schlieren apparatus has been built to visualize the propagation of ultrasound in solids. The design of the apparatus is described and some of the initial results are shown. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A cellular 8421 B.C.D. multiplier

    Publication Year: 1970, Page(s):321 - 322
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (310 KB)

    An iterative array of macro-cells is proposed to multiply together two N digit decimal numbers with a propagation delay of (2N ¿ 1) macrocell delays. The array will also add two decimal numbers to the product without adding to the complexity. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Measurements on a solid-state noise source

    Publication Year: 1970, Page(s):323 - 324
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (255 KB)

    Some planar silicon junctions with a breakdown voltage of 5.6V produce noise with good waveform up to lGHz. Flicker noise is absent. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.