• DocumentCode
    1406781
  • Title

    Synchronous electric time service

  • Author

    Warren, H. E.

  • Author_Institution
    Warren Telechron Company, Ashland, Mass.
  • Volume
    51
  • Issue
    1
  • fYear
    1932
  • Firstpage
    48
  • Lastpage
    48
  • Abstract
    PREVIOUS to 1916 no commercial a-c. system was regulated with sufficient accuracy of speed to enable its use for indicating time. Two devices then were developed making commercial a-c. time service possible. The first of these was a selfstarting synchronous motor which utilized residual magnetism to enable the rotor to start and run at synchronous speed. The second consisted of an indicating instrument which would show to a generating station operator, directly in terms of time, deviations of average frequency from standard.
  • Keywords
    Accuracy; Cable insulation; Clocks; Companies; Synchronization; Synchronous motors; Telephone sets;
  • fLanguage
    English
  • Journal_Title
    Electrical Engineering
  • Publisher
    ieee
  • ISSN
    0095-9197
  • Type

    jour

  • DOI
    10.1109/EE.1932.6429632
  • Filename
    6429632
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1406781