GB901764A - Improvements in or relating to electronic timepieces - Google Patents

Improvements in or relating to electronic timepieces

Info

Publication number
GB901764A
GB901764A GB1966559A GB1966559A GB901764A GB 901764 A GB901764 A GB 901764A GB 1966559 A GB1966559 A GB 1966559A GB 1966559 A GB1966559 A GB 1966559A GB 901764 A GB901764 A GB 901764A
Authority
GB
United Kingdom
Prior art keywords
coils
balance
relating
axis
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1966559A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fabrique des Montres Zenith SA
Original Assignee
Fabrique des Montres Zenith SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fabrique des Montres Zenith SA filed Critical Fabrique des Montres Zenith SA
Publication of GB901764A publication Critical patent/GB901764A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
    • G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

901,764. Clocks and watches. FABRIQUES DES MONTRES ZENITH S.A. June 9, 1959 [April 10, 1959], No. 19665/59. Class 139. The balance maintaining circuit of an electric timepiece comprises coaxial pick-up and driving coils 8, 9 which co-operate with a permanent magnet 2 carried by the balance rim and which are connected respectively to the input and output of a transistor amplifier 10. As the magnet 2 moves between the coils 8, 9 its axis momentarily coincides with the common axis of the coils. The balance has a counterweight 3 and the gear train 7, 6 is driven by the pallet member 5. The transistor circuit may be temperature compensated.
GB1966559A 1959-04-10 1959-06-09 Improvements in or relating to electronic timepieces Expired GB901764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH7194559 1959-04-10

Publications (1)

Publication Number Publication Date
GB901764A true GB901764A (en) 1962-07-25

Family

ID=4531429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1966559A Expired GB901764A (en) 1959-04-10 1959-06-09 Improvements in or relating to electronic timepieces

Country Status (1)

Country Link
GB (1) GB901764A (en)

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