TK Relay

February 4, 1938

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TK Relay
  • Title
  • TK Relay
  • Creator
  • Tyrrell, P. J.
  • Date
  • February 4, 1938
  • Identifier
  • 20230512-dqlt-0055
  • Source Identifier
  • 201205.W115.T313.DQ
  • Description
  • TK Relay used for implementing a time delay between the opening and closing of ac and the opening or closing of dc or ac circuits.
  • Extent
  • 4 x 5 in.
  • Type
  • still image
  • Genre
  • photographs
  • Subject
  • Relays, Electric
    Electric circuit-breakers
    Electric apparatus and appliances
  • Source
  • Duquesne Light Photograph Collection, 1927-1942
  • Contributor
  • University of Pittsburgh
  • Collection
  • Duquesne Light Photograph Collection
  • Rights Information
  • In Copyright. This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
    http://rightsstatements.org/vocab/InC/1.0/