• DocumentCode
    954440
  • Title

    A Solid-State Variable Resistor Using a Junction FET

  • Author

    Sugita, Etsuji ; Yasuda, Toyoshi ; Matsumoto, Tadashi

  • Author_Institution
    N.T.T.,Physical Design Sec.,Electronic Equipment Development Division,Tokyo
  • Volume
    12
  • Issue
    3
  • fYear
    1976
  • fDate
    9/1/1976 12:00:00 AM
  • Firstpage
    260
  • Lastpage
    264
  • Abstract
    A noncontact variable resistor having fast response and small nonlinear distortion is needed for applications such as autoattenuators or autoequalizers. For these purposes, the voltage controlled variable resistor (VCR) based on the junction FET was investigated. This paper describes the-design results achieved by a VCR and also discusses the behavior of this device with regard to nonlinear distortion and aging characteristics. S/D2and S/D3(S: signal level; D2, D3: second and third harmonics level) were over 70 dB in the resistance region of 40-600 \\Omega and were improved by 10-30 dB, compared with the conventional FET. Resistance aging is less than 1 percent at 100°C after 1000 h.
  • Keywords
    FET devices; JFETs; Resistors; Aging; Capacitance; Electric variables control; Equations; FETs; Nonlinear distortion; Resistors; Solid state circuits; Video recording; Voltage control;
  • fLanguage
    English
  • Journal_Title
    Parts, Hybrids, and Packaging, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0361-1000
  • Type

    jour

  • DOI
    10.1109/TPHP.1976.1135131
  • Filename
    1135131
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=954440