CH646031GA3 - - Google Patents

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Publication number
CH646031GA3
CH646031GA3 CH576580A CH576580A CH646031GA3 CH 646031G A3 CH646031G A3 CH 646031GA3 CH 576580 A CH576580 A CH 576580A CH 576580 A CH576580 A CH 576580A CH 646031G A3 CH646031G A3 CH 646031GA3
Authority
CH
Switzerland
Prior art keywords
stepping motor
driving
power source
detecting
circuit
Prior art date
Application number
CH576580A
Other languages
French (fr)
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 filed Critical
Publication of CH646031GA3 publication Critical patent/CH646031GA3/fr

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)
  • Electric Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

An electronic timepiece comprising a power source, an electronic circuit, a stepping motor, and a detecting device for detecting a rotor movement after the stepping motor is driven. The electronic circuit includes a power source voltage detecting circuit and driving power controlling device which intermits driving pulses of the stepping motor according to an output of the voltage detecting circuit so that the driving force is substantially constant and the power consumption is decreased.
CH576580A 1979-09-18 1980-07-28 CH646031GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11979979A JPS5643575A (en) 1979-09-18 1979-09-18 Electronic clock

Publications (1)

Publication Number Publication Date
CH646031GA3 true CH646031GA3 (en) 1984-11-15

Family

ID=14770506

Family Applications (1)

Application Number Title Priority Date Filing Date
CH576580A CH646031GA3 (en) 1979-09-18 1980-07-28

Country Status (6)

Country Link
US (1) US4433401A (en)
JP (1) JPS5643575A (en)
CH (1) CH646031GA3 (en)
DE (1) DE3034395C2 (en)
FR (1) FR2466132A1 (en)
GB (1) GB2059649B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3214543A1 (en) * 1981-04-23 1982-11-11 Kabushiki Kaisha Suwa Seikosha, Tokyo ELECTRONIC ANALOG CLOCK
CH646575GA3 (en) * 1981-10-02 1984-12-14
CH646576GA3 (en) * 1981-10-02 1984-12-14
JPS5886479A (en) * 1981-11-19 1983-05-24 Shimauchi Seiki Kk Analog electronic timepiece
DE3149995C1 (en) * 1981-12-17 1983-05-05 Gebrüder Junghans GmbH, 7230 Schramberg Method of creating a clock stepper motor stator and stator of a clock stepper motor
JPS5913971A (en) * 1982-07-15 1984-01-24 Seiko Epson Corp Analog electronic timepiece
CH653852GA3 (en) * 1984-02-29 1986-01-31
JPS62237384A (en) * 1986-04-08 1987-10-17 Seiko Instr & Electronics Ltd Analog electronic timepiece with charging function
WO1990014625A1 (en) * 1989-05-26 1990-11-29 Seiko Epson Corporation Power source circuit
JP3432470B2 (en) * 1992-03-18 2003-08-04 シチズン時計株式会社 Electronics
DE4305981C2 (en) * 1993-02-26 1999-03-11 Bruker Franzen Analytik Gmbh Method and device for the quantitative analysis of gas mixtures by means of resonant laser mass spectrometry in the case of strongly fluctuating measurement signals
EP0704774B1 (en) * 1994-04-06 1999-08-25 Citizen Watch Co., Ltd. Electronic timepiece
US5933392A (en) * 1995-09-20 1999-08-03 Citizen Watch Co., Ltd. Electronic watch
JP3541601B2 (en) * 1997-02-07 2004-07-14 セイコーエプソン株式会社 Control device for stepping motor, control method thereof, and timing device
JPH11127595A (en) * 1997-08-11 1999-05-11 Seiko Epson Corp Electronic equipment
US5877608A (en) * 1997-11-21 1999-03-02 Philips Electronics North America Corporation Current regulated multiphase motor driver with a common current sense element
CA2302171A1 (en) 1999-04-23 2000-10-23 Eta Sa Fabriques D'ebauches Method for controlling a stepping motor and device for implementing such method
DE69937731T2 (en) * 1999-04-23 2008-11-20 Eta Sa Manufacture Horlogère Suisse Method for controlling a stepping motor and device for using this method
JP2010220408A (en) * 2009-03-17 2010-09-30 Seiko Instruments Inc Stepping motor control circuit and analog electronic clock
JP2010256137A (en) * 2009-04-23 2010-11-11 Seiko Instruments Inc Stepping motor control circuit and analog electronic watch
KR200454248Y1 (en) 2009-06-04 2011-06-23 한길용 Stepping Motor Controlling Apparatus
JP2011234604A (en) * 2010-04-06 2011-11-17 Seiko Instruments Inc Stepping motor control circuit and analog electronic clock

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158287A (en) * 1976-08-12 1979-06-19 Citizen Watch Company Limited Driver circuit for electro-mechanical transducer
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
US4107595A (en) * 1977-01-24 1978-08-15 Teletype Corporation Current control system for a stepping motor
JPS53132384A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
FR2412850A1 (en) * 1977-04-26 1979-07-20 Suwa Seikosha Kk INTEGRATED SEMICONDUCTOR CIRCUIT
US4140955A (en) * 1977-05-12 1979-02-20 Fluke Trendar Corporation Stepping motor drive method and apparatus
JPS5413378A (en) * 1977-07-01 1979-01-31 Citizen Watch Co Ltd Electronic watch
GB2006995B (en) * 1977-09-26 1982-11-17 Citizen Watch Co Ltd Drive system for pulse motor
DE2749141A1 (en) * 1977-11-03 1979-05-10 Quarz Zeit Ag ELECTRIC CLOCK
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
CH616044B (en) * 1977-12-16 Bulova Watch Co Inc ELECTRONIC CLOCK.
CH616813B (en) * 1977-12-28 Ebauches Sa ELECTRONIC WATCH PART WITH DETECTION SYSTEM OF END OF BATTERY LIFE.
US4295083A (en) * 1979-07-02 1981-10-13 The Superior Electric Company Pulsed energy stepping motor power control unit
JPS5612577A (en) * 1979-07-13 1981-02-06 Seiko Instr & Electronics Ltd Electronic clock

Also Published As

Publication number Publication date
GB2059649B (en) 1983-05-05
GB2059649A (en) 1981-04-23
DE3034395A1 (en) 1981-04-16
DE3034395C2 (en) 1986-04-10
US4433401A (en) 1984-02-21
JPS5643575A (en) 1981-04-22
FR2466132A1 (en) 1981-03-27

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