CH639815GA3 - - Google Patents

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Publication number
CH639815GA3
CH639815GA3 CH1074378A CH1074378A CH639815GA3 CH 639815G A3 CH639815G A3 CH 639815GA3 CH 1074378 A CH1074378 A CH 1074378A CH 1074378 A CH1074378 A CH 1074378A CH 639815G A3 CH639815G A3 CH 639815GA3
Authority
CH
Switzerland
Prior art keywords
coil
high impedance
rotor
impedance element
rotation
Prior art date
Application number
CH1074378A
Other languages
French (fr)
Other versions
CH639815B (en
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
Publication of CH639815B publication Critical patent/CH639815B/en
Application filed filed Critical
Publication of CH639815GA3 publication Critical patent/CH639815GA3/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)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Adornments (AREA)

Abstract

A driver circuit for a stepping motor having a coil, a stator and a rotor receives pulse signals from a pulse signal generator to rotationally drive the rotor. A rotation detection circuit comprises switching circuitry switchable between a high impedance loop formed of the coil and a high impedance element and a low impedance loop formed of the coil and a low impedance element, and means for detecting the voltage induced in the coil. After a pulse signal is applied to the stepping motor, the switching circuitry forms the high impedance loop and the detecting means compares the voltage developed across the high impedance element with a predetermined voltage to thereby detect the rotation and non-rotation states of the rotor. This is a divisional of application Ser. No. 966,115, filed Dec. 4, 1978, now U.S. Pat. No. 4,326,278.
CH1074378A 1977-12-02 1978-10-17 ELECTRONIC WATCH PART, ESPECIALLY ELECTRONIC BRACELET WATCH. CH639815B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14465177A JPS5477169A (en) 1977-12-02 1977-12-02 Electronic watch

Publications (2)

Publication Number Publication Date
CH639815B CH639815B (en)
CH639815GA3 true CH639815GA3 (en) 1983-12-15

Family

ID=15367029

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1074378A CH639815B (en) 1977-12-02 1978-10-17 ELECTRONIC WATCH PART, ESPECIALLY ELECTRONIC BRACELET WATCH.

Country Status (8)

Country Link
US (2) US4326278A (en)
JP (1) JPS5477169A (en)
CH (1) CH639815B (en)
DE (1) DE2841946C2 (en)
FR (1) FR2410843A1 (en)
GB (2) GB2009464B (en)
HK (2) HK18684A (en)
SG (1) SG64883G (en)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
CH616045B (en) * 1978-06-20 Ebauches Sa PROCESS FOR REDUCING THE CONSUMPTION OF AN ELECTRONIC WATCH PART AND ELECTRONIC WATCH PART IMPLEMENTING THIS PROCESS.
US4321521A (en) * 1978-12-25 1982-03-23 Kabushiki Kaisha Daini Seikosha Detection device of electronic timepiece
US4351039A (en) * 1979-01-08 1982-09-21 Jean-Claude Berney Timepiece with a detector and control circuit for a stepping motor
FR2458939A1 (en) * 1979-06-11 1981-01-02 Seiko Instr & Electronics Electronic watch circuit - ensures stepwise change of pulse width fed to motor using detector and corrective network
FR2459579A1 (en) * 1979-06-21 1981-01-09 Suisse Horlogerie ADVANCE DETECTOR OF A STEP BY STEP MOTOR
FR2461399A1 (en) * 1979-07-09 1981-01-30 Suisse Horlogerie POSITION DETECTOR OF A STEP BY STEP MOTOR
FR2464478A1 (en) * 1979-09-04 1981-03-06 Suisse Horlogerie ADVANCE DETECTOR OF A STEP BY STEP MOTOR
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock
DE2944872C2 (en) * 1979-11-07 1981-11-19 Gebrüder Junghans GmbH, 7230 Schramberg Arrangement for controlling a stepper motor for battery-operated devices
CH641921B (en) * 1980-02-19 Berney Sa Jean Claude WATCH PART WITH A STEP MOTOR CONTROL DEVICE.
JPS56158978A (en) * 1980-05-13 1981-12-08 Citizen Watch Co Ltd Electronic watch
CH649187GA3 (en) * 1982-10-13 1985-05-15
JPS57106397A (en) * 1980-12-18 1982-07-02 Seiko Instr & Electronics Ltd Driving device for stepping motor
CH647383GA3 (en) * 1981-02-04 1985-01-31
CH644983GA3 (en) * 1981-03-31 1984-09-14
JPS5822592A (en) * 1981-08-03 1983-02-09 Hitachi Ltd Speed controlling method for motor and device thereof
NL8203094A (en) * 1982-08-04 1984-03-01 Philips Nv METHOD FOR ANALYZING THE VOLTAGE INDICATED IN A STEP MOTOR POWER COIL.
CH653850GA3 (en) * 1983-08-12 1986-01-31
DE3426459C2 (en) * 1984-07-18 1986-08-07 Borg Instruments GmbH, 7537 Remchingen Setting device for a clock driven by an electric motor
US4611157A (en) * 1985-02-08 1986-09-09 General Electric Company Switched reluctance motor drive operating without a shaft position sensor
DE3519008C1 (en) * 1985-05-25 1986-10-09 Pforzheimer Uhren-Rohwerke Porta GmbH, 7530 Pforzheim Stepper motor drive circuit
JPH07194193A (en) * 1993-12-27 1995-07-28 Canon Inc Method to control motor
US5933392A (en) * 1995-09-20 1999-08-03 Citizen Watch Co., Ltd. Electronic watch
JP3508444B2 (en) * 1997-02-07 2004-03-22 セイコーエプソン株式会社 Control device for stepping motor, control method thereof, and timing device
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
JP3162652B2 (en) * 1997-04-25 2001-05-08 セイコーインスツルメンツ株式会社 Electronic clock
JPH11127595A (en) * 1997-08-11 1999-05-11 Seiko Epson Corp Electronic equipment
JPH11257352A (en) * 1998-03-13 1999-09-21 Hitachi Ltd Magnetic bearing, rotating machine with it and operating method of rotating machine
JP2001258227A (en) * 2000-01-06 2001-09-21 Seiko Epson Corp Power generation equipment, clocking device and electronic equipment provided therewith, and adjusting method for cogging torque of power generation equipment
JP4236956B2 (en) * 2003-02-24 2009-03-11 セイコーインスツル株式会社 Step motor control device and electronic timepiece
JP4343549B2 (en) * 2003-02-24 2009-10-14 セイコーインスツル株式会社 Step motor control device and electronic timepiece
JP2006226927A (en) * 2005-02-21 2006-08-31 Seiko Instruments Inc Step motor drive unit and analog electronic timepiece
US7546817B2 (en) * 2006-07-21 2009-06-16 Radio Systems Corporation Animal containment transmitter system
JP4502023B2 (en) * 2008-02-20 2010-07-14 カシオ計算機株式会社 Step motor driving device, step motor driving program and step motor driving method
JP5363167B2 (en) * 2008-05-29 2013-12-11 セイコーインスツル株式会社 Stepping motor control circuit and analog electronic timepiece
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
JP2011234604A (en) * 2010-04-06 2011-11-17 Seiko Instruments Inc Stepping motor control circuit and analog electronic clock
JP6772500B2 (en) * 2016-03-22 2020-10-21 カシオ計算機株式会社 Rotation detector and electronic clock
JP7052193B2 (en) 2016-09-26 2022-04-12 カシオ計算機株式会社 Stepper motors, rotation detectors, and electronic clocks
JP7036629B2 (en) * 2018-03-06 2022-03-15 セイコーインスツル株式会社 Watch motor state detection circuit, watch, and watch motor state detection method
CN110320792B (en) * 2019-03-19 2021-01-12 安徽省华腾农业科技有限公司经开区分公司 Portable intelligent electronic watch with LED display screen

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500103A (en) * 1966-12-07 1970-03-10 Benrus Corp Electric timepiece drive with cut-off
US3757191A (en) * 1971-02-22 1973-09-04 Honeywell Inf Systems Stepping motor control circuit
JPS5319944B2 (en) * 1971-09-25 1978-06-23
JPS5542356B2 (en) * 1972-12-22 1980-10-30
JPS6024680B2 (en) * 1973-03-07 1985-06-14 セイコーインスツルメンツ株式会社 Clock step motor drive circuit
JPS5740759B2 (en) * 1973-07-17 1982-08-30
DE2352422C3 (en) * 1973-10-19 1979-07-12 Deutsche Itt Industries Gmbh, 7800 Freiburg Circuit for generating an auxiliary voltage in electronic clocks
US3896363A (en) * 1974-03-18 1975-07-22 Cincinnati Milacron Inc Feedback circuit for detecting the failure of a stepping motor to respond to the control circuit
US3963946A (en) * 1975-02-21 1976-06-15 Robertshaw Controls Company Driver circuit for step motor
JPS5240719A (en) * 1975-09-26 1977-03-29 Hitachi Ltd Motor driving system
JPS5292560A (en) * 1976-01-29 1977-08-04 Seiko Instr & Electronics Ltd Switch box drive pulse width control circuit for electronic clocks
US4032827A (en) * 1976-03-15 1977-06-28 Timex Corporation Driver circuit arrangement for a stepping motor
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS53136870A (en) * 1977-04-23 1978-11-29 Seiko Instr & Electronics Ltd Electronic watch
JPS53132383A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch circuit
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
CH639815B (en)
SG64883G (en) 1985-03-29
HK19084A (en) 1984-03-09
GB2009464A (en) 1979-06-13
FR2410843A1 (en) 1979-06-29
HK18684A (en) 1984-03-09
US4445784A (en) 1984-05-01
DE2841946C2 (en) 1992-02-20
JPS6115387B2 (en) 1986-04-23
FR2410843B1 (en) 1984-08-10
GB2094517B (en) 1983-01-19
DE2841946A1 (en) 1979-06-07
GB2009464B (en) 1983-02-02
GB2094517A (en) 1982-09-15
US4326278A (en) 1982-04-20
JPS5477169A (en) 1979-06-20

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