JPS5676078A - Circuit for electronic time piece - Google Patents

Circuit for electronic time piece

Info

Publication number
JPS5676078A
JPS5676078A JP15375079A JP15375079A JPS5676078A JP S5676078 A JPS5676078 A JP S5676078A JP 15375079 A JP15375079 A JP 15375079A JP 15375079 A JP15375079 A JP 15375079A JP S5676078 A JPS5676078 A JP S5676078A
Authority
JP
Japan
Prior art keywords
voltage
driving
circuit
power supplying
controlled
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.)
Pending
Application number
JP15375079A
Other languages
Japanese (ja)
Inventor
Shingo Ichikawa
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
Priority to JP15375079A priority Critical patent/JPS5676078A/en
Publication of JPS5676078A publication Critical patent/JPS5676078A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To always generate the optimum torque for a fluctuating time piece load regardless of a voltage variation of a high voltage battery by a method wherein a driving voltage to an electric-magnetic converter such as a step motor, etc. is detected and a power supplying time is controlled. CONSTITUTION:When a driving voltage applied to a driving circuit 5 of an electric- magnetic converter such as a step motor SM, etc. through a capacitor 5b of a driving power source circuit 5 reaches a given voltage an FF of a voltage level detection circuit 7 is set. An FF of a power supplying time control circuit 6 is reset by means of the set output due to the detection of this driving voltage, and a switch circuit 6a is disconnected, thus, a power supplying time to the capacitor 5b being controlled. And regardless of the voltage variation of a power source battery 1, the power supplying time is controlled and a given voltage is supplied to the magnetic converter driving circuit, thus, generating the optimum torque. In a same way, in corresponding to a time piece load variation, if a power supplying time is controlled, the optimum torque is generated for a calendar driving and the optimum torque can be always generated for the time piece load fluctuating regardless of the voltage variation of a high voltage battery such as a lithium battery, etc.
JP15375079A 1979-11-28 1979-11-28 Circuit for electronic time piece Pending JPS5676078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15375079A JPS5676078A (en) 1979-11-28 1979-11-28 Circuit for electronic time piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15375079A JPS5676078A (en) 1979-11-28 1979-11-28 Circuit for electronic time piece

Publications (1)

Publication Number Publication Date
JPS5676078A true JPS5676078A (en) 1981-06-23

Family

ID=15569290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15375079A Pending JPS5676078A (en) 1979-11-28 1979-11-28 Circuit for electronic time piece

Country Status (1)

Country Link
JP (1) JPS5676078A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01243891A (en) * 1988-02-12 1989-09-28 Eta Sa Fab Ebauches Stepping motor controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01243891A (en) * 1988-02-12 1989-09-28 Eta Sa Fab Ebauches Stepping motor controller

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