CH640386GA3 - - Google Patents

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Publication number
CH640386GA3
CH640386GA3 CH796080A CH796080A CH640386GA3 CH 640386G A3 CH640386G A3 CH 640386GA3 CH 796080 A CH796080 A CH 796080A CH 796080 A CH796080 A CH 796080A CH 640386G A3 CH640386G A3 CH 640386GA3
Authority
CH
Switzerland
Prior art keywords
stepping motor
motor
circuit
signal
drive pulses
Prior art date
Application number
CH796080A
Other languages
German (de)
Other versions
CH640386B (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 CH640386B publication Critical patent/CH640386B/en
Application filed filed Critical
Publication of CH640386GA3 publication Critical patent/CH640386GA3/de

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors of the kind having motors rotating step by step
    • H02P8/14—Arrangements for controlling speed or speed and torque
    • H02P8/16—Reducing energy dissipated or supplied
    • 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

Abstract

In a circuit for the actuation of a stepping motor for battery-operated instruments, in particular watches, the length of motor drive pulses is altered for the purpose of saving energy. In the process, different loads on the stepping motor and variable battery voltages are taken into consideration. This feature is accomplished by measuring a signal proportional to the current flowing through the field coil of the stepping motor and interrupting the drive pulse to the motor when a predetermined change occurs in the signal. The drive pulses are further limited as to both minimum and maximum length. Advantageously, the stepping motor is actuated and the signal processed by means of a digital circuit technology, in order to provide for complete integration of the circuit.
CH796080A 1979-11-07 1980-10-24 ARRANGEMENT FOR THE CONTROL OF A STEPPER MOTOR FOR BATTERY OPERATED DEVICES. CH640386B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2944872A DE2944872C2 (en) 1979-11-07 1979-11-07 Arrangement for controlling a stepper motor for battery-operated devices

Publications (2)

Publication Number Publication Date
CH640386B CH640386B (en)
CH640386GA3 true CH640386GA3 (en) 1984-01-13

Family

ID=6085321

Family Applications (1)

Application Number Title Priority Date Filing Date
CH796080A CH640386B (en) 1979-11-07 1980-10-24 ARRANGEMENT FOR THE CONTROL OF A STEPPER MOTOR FOR BATTERY OPERATED DEVICES.

Country Status (6)

Country Link
US (1) US4381481A (en)
JP (1) JPS5683298A (en)
CH (1) CH640386B (en)
DE (1) DE2944872C2 (en)
FR (1) FR2469822A1 (en)
GB (1) GB2063529B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH641921B (en) * 1980-02-19 Berney Sa Jean Claude WATCH PART WITH A STEP MOTOR CONTROL DEVICE.
CH644989GA3 (en) * 1981-03-18 1984-09-14
CH646576GA3 (en) * 1981-10-02 1984-12-14
CH646575GA3 (en) * 1981-10-02 1984-12-14
CH656776GA3 (en) * 1984-07-27 1986-07-31
US4723855A (en) * 1985-01-17 1988-02-09 Seiko Epson Corp. Compact printer
US4666313A (en) * 1985-04-11 1987-05-19 Junghans Uhren Gmbh Timepiece and drive unit therefor
US4663576A (en) * 1985-04-30 1987-05-05 Combustion Engineering, Inc. Automatic controller for magnetic jack type control rod drive mechanism
US4791343A (en) * 1987-08-31 1988-12-13 Allied-Signal Inc. Stepper motor shaft position sensor
CH672043B5 (en) * 1988-02-12 1990-04-30 Ebauchesfabrik Eta Ag
JPH0332396A (en) * 1989-06-28 1991-02-12 Sharp Corp Stepping motor driver
US5105140A (en) * 1990-01-11 1992-04-14 Baxer International Inc. Peristaltic pump motor drive
GB2244395A (en) * 1990-05-25 1991-11-27 Motorola Inc Stepper motor controller
DE69621392T2 (en) * 1995-09-20 2003-01-09 Citizen Watch Co Ltd Electronic clock
US5930103A (en) * 1998-03-02 1999-07-27 Motorola, Inc. Control circuit for an electromechanical device
US7155012B2 (en) 2002-01-02 2006-12-26 Sony Corporation Slice mask and moat pattern partial encryption
US7122026B2 (en) * 2002-04-22 2006-10-17 Medtronic, Inc. Implantable infusion device with optimized peristaltic pump motor drive
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281630A (en) * 1964-01-02 1966-10-25 Ampex Pulse width modulator for step motor
DE1936379A1 (en) * 1969-07-17 1971-01-28 Licentia Gmbh Arrangement for speed control of a synchronous small motor
CH585428B5 (en) * 1972-09-20 1977-02-28 Portescap
JPS5345568A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic watch
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
CH635973B (en) * 1977-01-19 Suwa Seikosha Kk CONTROL CIRCUIT FOR AN ELECTROMECHANICAL TRANSDUCER OF A WATCH, ESPECIALLY OF AN ELECTRONIC BRACELET WATCH.
JPS53132380A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch

Also Published As

Publication number Publication date
JPS5683298A (en) 1981-07-07
FR2469822B3 (en) 1983-06-24
CH640386B (en)
FR2469822A1 (en) 1981-05-22
GB2063529B (en) 1983-10-05
DE2944872B1 (en) 1981-03-26
DE2944872C2 (en) 1981-11-19
US4381481A (en) 1983-04-26
GB2063529A (en) 1981-06-03

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