JPS5677778A - Driving device for timepiece step motor - Google Patents

Driving device for timepiece step motor

Info

Publication number
JPS5677778A
JPS5677778A JP15482779A JP15482779A JPS5677778A JP S5677778 A JPS5677778 A JP S5677778A JP 15482779 A JP15482779 A JP 15482779A JP 15482779 A JP15482779 A JP 15482779A JP S5677778 A JPS5677778 A JP S5677778A
Authority
JP
Japan
Prior art keywords
drive
step motor
circuit
power consumption
voltage
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.)
Granted
Application number
JP15482779A
Other languages
Japanese (ja)
Other versions
JPS6114477B2 (en
Inventor
Katsuhiko Takebe
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.)
Rhythm Watch Co Ltd
Original Assignee
Rhythm 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 Rhythm Watch Co Ltd filed Critical Rhythm Watch Co Ltd
Priority to JP15482779A priority Critical patent/JPS5677778A/en
Publication of JPS5677778A publication Critical patent/JPS5677778A/en
Publication of JPS6114477B2 publication Critical patent/JPS6114477B2/ja
Granted 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
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Landscapes

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

Abstract

PURPOSE:To reduce useless power consumption during the lightly loaded and thus realize low power consumption, by detecting magnitude of the load of a step motor through the integration of a drive current waveform and then controlling the drive pulse duration. CONSTITUTION:The pulse current of the fixed duration is applied to the drive coil 62 from the dividing circuit 28 via drivers 56 and 58, and thus the step motor turns. This drive current is converted into the voltage by the operational amplifier 66 in the current integral network 64 and via the drivers 56 and 58 each. Thus an integration is given to the integral network consisting of the capacitor 72 and the resistance 70 connected to the FF72 and 74, etc. which receive the ON/OFF control in accordance with the drive of the coil 62. Then the voltage is applied to the opertional amplifier 88 to which the reference voltage corresponding to the integral voltage during the light load of the control circuit 86. And the FF94 is set by the amplifier 88 when the load of the step motor increases, and the AND gates 32 and 34 are controlled via the OR circuit 98. Thus the broad division output supplied from the circuit 28 is turned into the drive pulse. As a result, the useless power consumption is reduced during the lightly loaded.
JP15482779A 1979-11-29 1979-11-29 Driving device for timepiece step motor Granted JPS5677778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15482779A JPS5677778A (en) 1979-11-29 1979-11-29 Driving device for timepiece step motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15482779A JPS5677778A (en) 1979-11-29 1979-11-29 Driving device for timepiece step motor

Publications (2)

Publication Number Publication Date
JPS5677778A true JPS5677778A (en) 1981-06-26
JPS6114477B2 JPS6114477B2 (en) 1986-04-18

Family

ID=15592739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15482779A Granted JPS5677778A (en) 1979-11-29 1979-11-29 Driving device for timepiece step motor

Country Status (1)

Country Link
JP (1) JPS5677778A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172279A (en) * 1980-08-25 1982-10-23 Ebauchesfabrik Eta Ag Saving of power consumption for electronic time piece and electronic time piece employing it

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62285377A (en) * 1986-06-04 1987-12-11 ヒロセ電機株式会社 Shield type electric connector and connection thereof
JPS6314379U (en) * 1986-07-15 1988-01-30
JPS6358476U (en) * 1986-10-02 1988-04-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172279A (en) * 1980-08-25 1982-10-23 Ebauchesfabrik Eta Ag Saving of power consumption for electronic time piece and electronic time piece employing it
JPH0371672B2 (en) * 1980-08-25 1991-11-14 Ebauchesfabrik Eta Ag

Also Published As

Publication number Publication date
JPS6114477B2 (en) 1986-04-18

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