GB1446497A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
GB1446497A
GB1446497A GB2211874A GB2211874A GB1446497A GB 1446497 A GB1446497 A GB 1446497A GB 2211874 A GB2211874 A GB 2211874A GB 2211874 A GB2211874 A GB 2211874A GB 1446497 A GB1446497 A GB 1446497A
Authority
GB
United Kingdom
Prior art keywords
feedback
signal
drive
feedback amplifier
circuit
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
GB2211874A
Other languages
English (en)
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of GB1446497A publication Critical patent/GB1446497A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
    • H10D84/60—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D10/00 or H10D18/00, e.g. integration of BJTs
    • H10D84/611—Combinations of BJTs and one or more of diodes, resistors or capacitors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Bipolar Transistors (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
GB2211874A 1973-05-24 1974-05-17 Electronic timepiece Expired GB1446497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48057208A JPS5010168A (enrdf_load_stackoverflow) 1973-05-24 1973-05-24

Publications (1)

Publication Number Publication Date
GB1446497A true GB1446497A (en) 1976-08-18

Family

ID=13049080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2211874A Expired GB1446497A (en) 1973-05-24 1974-05-17 Electronic timepiece

Country Status (5)

Country Link
US (1) US3905188A (enrdf_load_stackoverflow)
JP (1) JPS5010168A (enrdf_load_stackoverflow)
DE (1) DE2425253B2 (enrdf_load_stackoverflow)
FR (1) FR2231043B1 (enrdf_load_stackoverflow)
GB (1) GB1446497A (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51101478A (enrdf_load_stackoverflow) * 1975-03-04 1976-09-07 Suwa Seikosha Kk
US4106280A (en) * 1975-03-27 1978-08-15 Hansrichard Schulz Method and apparatus for synchronizing a mechanical oscillating system to the accuracy of a quartz standard
JPS5220120A (en) * 1975-08-08 1977-02-15 Touhoku Rikoo Kk Printer using dielectric element and matrix type
JPS5230519A (en) * 1975-09-04 1977-03-08 Nippon Telegraph & Telephone Printing head for picture element impact printer
US4300083A (en) * 1977-07-05 1981-11-10 Automation Devices, Inc. Constant amplitude controller and method
US4333171A (en) * 1979-09-04 1982-06-01 Citizen Watch Co., Ltd. Electronic timepiece with diffusion resistor for compensating threshold variations
JPS59196275A (ja) * 1983-04-21 1984-11-07 Tokyo Electric Co Ltd プリンタの印字ハンマ駆動装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124731A (en) * 1964-03-10 Electronic time pieces
DE1448342A1 (de) * 1960-03-31 1969-04-10 Reich Robert W Elektronisches Antriebsprinzip fuer Uhren
GB1078790A (en) * 1964-11-20 1967-08-09 Nippon Electric Co A resistor element and a manufacturing method therefor
US3447051A (en) * 1965-01-13 1969-05-27 Union Special Machine Co Control circuit for electro-mechanical devices
CH466149A (fr) * 1966-12-22 1969-01-15 Centre Electron Horloger Circuit d'entretien d'un dispositif mécanique résonnant, d'un garde-temps
US3568430A (en) * 1968-07-11 1971-03-09 Hamilton Watch Co Resistance bridge controlled timekeeping device
US3602842A (en) * 1969-08-08 1971-08-31 Scudder Smith Electromechanical oscillator including a dual vibrator for producing a bent frequency
FR2138339B1 (enrdf_load_stackoverflow) * 1971-05-24 1974-08-19 Radiotechnique Compelec

Also Published As

Publication number Publication date
DE2425253A1 (de) 1974-12-12
DE2425253B2 (de) 1978-06-08
FR2231043A1 (enrdf_load_stackoverflow) 1974-12-20
FR2231043B1 (enrdf_load_stackoverflow) 1977-04-08
US3905188A (en) 1975-09-16
JPS5010168A (enrdf_load_stackoverflow) 1975-02-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee