• DocumentCode
    925438
  • Title

    A.C.-coupled probe technique for very-low-frequency operation

  • Author

    Barker, R.W.J. ; Hart, B.L.

  • Author_Institution
    University of Sheffield, Department of Electronic & Electrical Engineering, Sheffield, UK
  • Volume
    10
  • Issue
    16
  • fYear
    1974
  • Firstpage
    336
  • Lastpage
    337
  • Abstract
    The use of a junction-f.e.t. matched pair, functioning as a self-biased source follower, bootstrapped by the operational amplifier voltage follower it drives, facilitates the design of an a.c.-coupled oscilloscope probe with maximised input impedance. Consequently, a lower-cutoff frequency of less than 3 Hz is feasible with input coupling components that are not incompatible with current i.c. design practice.
  • Keywords
    cathode-ray oscilloscopes; circuits; field effect transistors; operational amplifiers; probes; IC; VLF operation; bootstrapping; cathode ray oscilloscopes; circuits; design; field effect transistors; operational amplifier; probes; self biased source follower;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19740266
  • Filename
    4236429
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=925438