• DocumentCode
    1347655
  • Title

    A transistor-oscillator limit switch for indicating and recording instruments

  • Author

    Wintermute, J. T. ; Hayter, S. G.

  • Author_Institution
    Westinghouse Electric Corporation, Newark, N. J.
  • Volume
    79
  • Issue
    5
  • fYear
    1960
  • Firstpage
    518
  • Lastpage
    519
  • Abstract
    The continued development of automatic controls has emphasized the need for limit switches on indicating and recording instruments which will not restrict the normal operation of the measuring unit. This control has been obtained in the past in two ways: 1. By contacts carried on the instrument pointer. 2. By employing a vane attached to the pointer to change the constants of a vacuumtube oscillator circuit, and using the change in oscillator current to operate a relay.
  • Keywords
    Blades; Coils; Instruments; Oscillators; Relays; Switching circuits; Transistors;
  • 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.1960.6367302
  • Filename
    6367302
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1347655