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Radio and Electronic Engineer

Issue 5 • Date May 1963

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Displaying Results 1 - 12 of 12
  • The institution's 1963 convention

    Publication Year: 1963
    PDF file iconPDF (110 KB)  
    Freely Available from IEEE
  • Correction: An instructional aid for digital computer logic

    Publication Year: 1963
    PDF file iconPDF (142 KB)  
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  • Cryotrons and cryotron circuits - a review

    Publication Year: 1963 , Page(s): 387 - 397
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (1203 KB)  

    The characteristics of crossed-film and in-line cryotrons are described and their dependence upon film thickness, operating temperature is discussed. Factors affecting current gain and time-constant are considered. General aspects of cryotron circuits are described, particular attention being paid to cycle time considerations. It is shown how cryotrons may be used in simple logic circuits. Three c... View full abstract»

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  • An investigation into the acoustic noise produced by the ferrite core used in television line output transformers

    Publication Year: 1963 , Page(s): 399 - 416
    Click to expandAbstract | PDF file iconPDF (1598 KB)  

    Details are given of the measurement of the acoustic noise produced by a line output transformer and polar diagrams are shown of the sound pressure around the core. It is shown that in the region of the television line frequency, 10.125 kc/s, the core can resonate in a flexural mode giving extreme levels of noise. A detailed analysis is given of the radiation diagrams produced from a vibrating fac... View full abstract»

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  • Stabilization of a variable quantity with respect to a single valued reference

    Publication Year: 1963 , Page(s): 417 - 427
    Click to expandAbstract | PDF file iconPDF (1074 KB)  

    A feedback system consisting of two interacting loops is studied, which stabilizes an output variable using a single valued reference. The deviation of the output quantity caused by an external disturbance depends on the equality of the two loops, and can be made to approach zero by suitable adjustment of system parameters. Results of the theory were confirmed experimentally using a system of two ... View full abstract»

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  • Automatic force balance check weigher

    Publication Year: 1963 , Page(s): 428 - 431
    Click to expandAbstract | PDF file iconPDF (1745 KB)  

    The high speed check weigher was developed to replace the sampling methods previously employed. These methods were not absolutely positive in detecting underweight articles. Besides eliminating the manual labour employed, the check weigher with electrical output enables the average weight to be indicated continuously and in ¿real time¿. View full abstract»

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  • An experimental investigation into the operation of the parametric phase-locked oscillator

    Publication Year: 1963 , Page(s): 432 - 440
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (976 KB)  

    Basic principles of operation of the ¿phase-locked oscillator¿ are discussed. Measurements were carried out at low frequencies (5.5 Mc/s) in order to observe the relevant waveforms on a conventional oscilloscope. Abrupt junction diodes were employed as the variable reactance elements and balanced circuit configurations were used to reduce the amplitude of pump signal at the output terminals of t... View full abstract»

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  • Directional distribution of ambient sea noise

    Publication Year: 1963 , Page(s): 441 - 444
    Click to expandAbstract | PDF file iconPDF (607 KB)  

    Observations of the directional distribution of ambient sea noise are reviewed, for depths of 100 to 1000 feet, in the octave 0.75 to 1.5 kc/s, obtained with a 32-element spherical array yielding 32 simultaneous beams covering all directions in three dimensions. The results are presented diagrammatically. An appendix contains a description of the DIMUS bea m-forming system (clipping and shift-regi... View full abstract»

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  • Phenomena during the growth and decay of spread-F

    Publication Year: 1963 , Page(s): 445 - 448
    Click to expandAbstract | PDF file iconPDF (990 KB)  

    Observations of the directional distribution of ambient sea noise are reviewed, for depths of 100 to 1000 feet, in the octave 0.75 to 1.5 kc/s, obtained with a 32-element spherical array yielding 32 simultaneous beams covering all directions in three dimensions. The results are presented diagrammatically. An appendix contains a description of the DIMUS bea m-forming system (clipping and shift-regi... View full abstract»

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  • Microwave branching systems

    Publication Year: 1963 , Page(s): 449 - 456
    Cited by:  Papers (1)
    Click to expandAbstract | PDF file iconPDF (699 KB)  

    In multi-channel microwave radio relay systems it is sometimes necessary to have a number of transmitters and receivers simultaneously utilizing the same aerial. This is advisable from economic considerations because of the saving entailed in feeder and aerial costs. To achieve this a complex branching system is necessary. The object of this paper is to describe the design and development of such ... View full abstract»

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  • A high-power, low-frequency sonar for sub-bottom profiling

    Publication Year: 1963 , Page(s): 457 - 460
    Click to expandAbstract | PDF file iconPDF (2182 KB)  

    This is a continuous sub-bottom profiling system designed to give high resolution whilst retaining good penetration. By mounting the output transducer in the bottom of a fibreglass dinghy, towed well astern of the survey ship, the shortest possible output pulse has been achieved, and by using a line hydrophone towed between the ship and dinghy a very low background noise level has been obtained. U... View full abstract»

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  • An experimental incremental computer

    Publication Year: 1963 , Page(s): 461 - 473
    Click to expandAbstract | PDF file iconPDF (1586 KB)  

    This paper describes an experimental incremental computer using time-shared equipment. The basic operation provides approximate numerical integration by adding rectangular areas. There are 45 integrators in the computer, the integrands being represented serially by up to 22 bits at a digit rate of 500 k/second. Thenumber of bits representing the values of increments in the computer is easily varie... View full abstract»

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