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Radio and Electronic Engineer

Issue 1 • Date January 1971

 This issue contains several parts.Go to:  Part S 

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Displaying Results 1 - 8 of 8
  • Expansion or contraction

    Publication Year: 1971
    Save to Project icon | PDF file iconPDF (140 KB)  
    Freely Available from IEEE
  • Notices

    Publication Year: 1971
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    Freely Available from IEEE
  • Electrolytic capacitors

    Publication Year: 1971
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3536 KB)  

    A brief survey is given of aluminium and tantalum electrolytic capacitors. The fundamental behaviour of the dielectrics are discussed particularly with reference to the temperature coefficient of capacitance. It is shown, however, that the fundamental properties are masked by the presence of electrolyte, used to heal the dielectric film during use and to connect to the dielectric when it is deposi... View full abstract»

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  • Multi-frequency analysis of switching diode modulators under high-level signal conditions

    Publication Year: 1971 , Page(s): 17 - 20
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (420 KB)  

    Distortion products of intermodulation, cross-modulation and harmonic types can be calculated in switching modulator circuits by evaluating the coefficients of the multiple Fourier series resulting from the interaction of many signals of differing frequencies with a bi-linear diode characteristic. An analysis of this type is developed in order to establish the range of signal levels for which appr... View full abstract»

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  • Electronic engineering in the solution to harbour approach problems for large ships

    Publication Year: 1971 , Page(s): 21 - 32
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3926 KB)  

    The paper examines the range of electronic devices now coming into use, describes present methods of acquisition, display and dissemination of the data and suggests lines of future development. Outstanding problems to which no costeffective solution has yet appeared are also discussed.The future problem is examined and a total system design approach suggested as most likely to provide effective op... View full abstract»

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  • Conference report: laboratory automation

    Publication Year: 1971 , Page(s): 33 - 34
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    Freely Available from IEEE
  • The economics of operator participation in automatic testing

    Publication Year: 1971 , Page(s): 35 - 42
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1464 KB)  

    After briefly considering some of the factors which should be considered when installing automatic test equipment, the paper gives detailed consideration to ways in which the degree and nature of operator participation affects the cost of operation. The area of machine interface is significant and a field test console developed for testing of Army radio equipment is quoted as an example where a we... View full abstract»

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  • The early history of amplitude modulation, sidebands and frequency-division-multiplex

    Publication Year: 1971 , Page(s): 43 - 47
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (742 KB)  

    It is shown that the ideas of f.d.m. originated with Alexander Graham Bell around 1870 and were formulated as an f.d.m. telephone system by Leblanc in 1886. Amplitude modulation of a carrier by speech probably originated also with Leblanc in 1886. The existence of sidebands (or sidetones) was demonstrated experimentally by Mayer in 1875 and theoretically by Rayleigh in 1894, but was not known to t... View full abstract»

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