GB1130672A - Electric timepiece - Google Patents

Electric timepiece

Info

Publication number
GB1130672A
GB1130672A GB32425/67A GB3242567A GB1130672A GB 1130672 A GB1130672 A GB 1130672A GB 32425/67 A GB32425/67 A GB 32425/67A GB 3242567 A GB3242567 A GB 3242567A GB 1130672 A GB1130672 A GB 1130672A
Authority
GB
United Kingdom
Prior art keywords
transistor
resistor
current
emitter
july
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
GB32425/67A
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.)
Biviator AG
Original Assignee
Biviator AG
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 Biviator AG filed Critical Biviator AG
Publication of GB1130672A publication Critical patent/GB1130672A/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
    • G04C3/067—Driving circuits with distinct detecting and driving coils
    • G04C3/068—Driving circuits with distinct detecting and driving coils provided with automatic control
    • 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
    • G04C3/08—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—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 mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • G04C3/108—Driving circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Electric Clocks (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1,130,672. Transistor oscillator circuits. BIVIATOR S.A. 14 July, 1967 [22 July, 1966], No. 32425/67. Heading H3T. [Also in Division G3] In an electric timepiece having a control coil and a driving coil connected into the input and output circuits respectively, of a transistor to provide a system for sustaining the oscillation of a mechanical oscillator or resonator, the driving coil 1 is connected between the emitter of the transistor 4 and one terminal of a voltage source 3, the control coil 2 is connected in series with a variable resistor 5 between the base and emitter of the transistor, and a diode 6, such as a Zener diode, is connected between the base of the transistor and said one terminal of the voltage source. The resistor 5 may be adjusted to vary the induced control current and thereby the braking effect of such current on the mechanical oscillator to adjust the amplitude of the latter. The drive current is maintained constant by the Zener diode irrespective of the adjustment of the resistor 5.
GB32425/67A 1966-07-22 1967-07-14 Electric timepiece Expired GB1130672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1066066 1966-07-22

Publications (1)

Publication Number Publication Date
GB1130672A true GB1130672A (en) 1968-10-16

Family

ID=4365495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32425/67A Expired GB1130672A (en) 1966-07-22 1967-07-14 Electric timepiece

Country Status (4)

Country Link
US (1) US3457524A (en)
CH (1) CH1066066A4 (en)
DE (1) DE1673723B2 (en)
GB (1) GB1130672A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2058363B1 (en) * 1969-08-18 1973-10-19 Citizen Watch Co Ltd
US3765163A (en) * 1972-03-17 1973-10-16 Uranus Electronics Electronic timepiece

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100278A (en) * 1958-01-10 1963-08-06 Reich Robert Walter Electromagnetic pendulum drive

Also Published As

Publication number Publication date
DE1673723A1 (en) 1971-02-11
US3457524A (en) 1969-07-22
DE1673723B2 (en) 1972-05-04
CH1066066A4 (en) 1968-04-30

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