• DocumentCode
    1354357
  • Title

    Transistorized multifrequency ringing generator

  • Author

    Kostelich, J. F. ; Howald, B. W.

  • Author_Institution
    Lorain Products Corporation, Lorain, Ohio
  • Volume
    78
  • Issue
    6
  • fYear
    1960
  • Firstpage
    987
  • Lastpage
    991
  • Abstract
    The selective telephone party-line ringing system using mechanically tuned bells is relatively well known. A 5-party line, for example, may have phones with bells tuned to 20, 30, 40, 50, and 60-cycles, respectively. Introducing a 40-cycle ringing voltage to this party line will cause only the 40-cycle bell to ring.
  • Keywords
    Batteries; Generators; Harmonic analysis; Noise; Oscillators; Relays; Voltage control;
  • fLanguage
    English
  • Journal_Title
    American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
  • Publisher
    ieee
  • ISSN
    0097-2452
  • Type

    jour

  • DOI
    10.1109/TCE.1960.6368504
  • Filename
    6368504
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1354357