CH641921GA3 - - Google Patents

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Publication number
CH641921GA3
CH641921GA3 CH132080A CH132080A CH641921GA3 CH 641921G A3 CH641921G A3 CH 641921GA3 CH 132080 A CH132080 A CH 132080A CH 132080 A CH132080 A CH 132080A CH 641921G A3 CH641921G A3 CH 641921GA3
Authority
CH
Switzerland
Prior art keywords
signal
motor
reference time
current
driving pulse
Prior art date
Application number
CH132080A
Other languages
French (fr)
Other versions
CH641921B (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 CH641921B publication Critical patent/CH641921B/en
Application filed filed Critical
Priority to CH132080A priority Critical patent/CH641921B/en
Priority to US06/233,087 priority patent/US4425538A/en
Priority to DE19813104674 priority patent/DE3104674A1/en
Priority to GB8104056A priority patent/GB2070813B/en
Priority to FR8103086A priority patent/FR2476409A1/en
Priority to JP2236181A priority patent/JPS56142475A/en
Publication of CH641921GA3 publication Critical patent/CH641921GA3/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)

Abstract

The timepiece includes a detector of the direction of the current in the winding of the motor which is used to detect the first reversal in current direction after the end of the driving pulse and to deliver a signal which is representative of this current direction. A comparator circuit (34-36, 38, 39, 48) is used to compare the moment of the appearance of this signal with a reference time which is fixed in relation to the driving pulse and to control a circuit (28-31, 33, 40, 44, 51, 46, 47) which controls the duration of the driving pulses in such a way that the instant at which the signal appears coincides with the reference time. This enables minimum energy to be imparted to the motor for a given variable load.
CH132080A 1980-02-19 1980-02-19 WATCH PART WITH A STEP MOTOR CONTROL DEVICE. CH641921B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH132080A CH641921B (en) 1980-02-19 1980-02-19 WATCH PART WITH A STEP MOTOR CONTROL DEVICE.
US06/233,087 US4425538A (en) 1980-02-19 1981-02-10 Timepiece with a device for the control of a stepping motor
DE19813104674 DE3104674A1 (en) 1980-02-19 1981-02-10 TIME MEASURING DEVICE WITH A STEPPING MOTOR AND A CONTROL DEVICE FOR THE SAME
GB8104056A GB2070813B (en) 1980-02-19 1981-02-10 Timepiece with a device for the control of a stepping motor
FR8103086A FR2476409A1 (en) 1980-02-19 1981-02-17 CLUTCH PIECE WITH MOTOR CONTROL DEVICE STEP BY STEP
JP2236181A JPS56142475A (en) 1980-02-19 1981-02-19 Watch with stepping motor controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH132080A CH641921B (en) 1980-02-19 1980-02-19 WATCH PART WITH A STEP MOTOR CONTROL DEVICE.

Publications (2)

Publication Number Publication Date
CH641921B CH641921B (en)
CH641921GA3 true CH641921GA3 (en) 1984-03-30

Family

ID=4207679

Family Applications (1)

Application Number Title Priority Date Filing Date
CH132080A CH641921B (en) 1980-02-19 1980-02-19 WATCH PART WITH A STEP MOTOR CONTROL DEVICE.

Country Status (6)

Country Link
US (1) US4425538A (en)
JP (1) JPS56142475A (en)
CH (1) CH641921B (en)
DE (1) DE3104674A1 (en)
FR (1) FR2476409A1 (en)
GB (1) GB2070813B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8203094A (en) * 1982-08-04 1984-03-01 Philips Nv METHOD FOR ANALYZING THE VOLTAGE INDICATED IN A STEP MOTOR POWER COIL.
CH653206GA3 (en) * 1983-09-16 1985-12-31
CH656776GA3 (en) * 1984-07-27 1986-07-31
US5142213A (en) * 1991-04-16 1992-08-25 Master Control Systems, Inc. Wye-delta open transition motor starter with leading phase monitor and method of use
US5329468A (en) * 1992-03-12 1994-07-12 Kabushiki Kaisha Kito Actual operating time indicator
JP3256342B2 (en) * 1993-08-04 2002-02-12 ティーアールダブリュ オートモーティブ ジャパン株式会社 Stepping motor step-out detection device
JPH11127595A (en) * 1997-08-11 1999-05-11 Seiko Epson Corp Electronics
US7233125B2 (en) * 2005-09-01 2007-06-19 Stmicroelectronics, Inc. System and method for controlling an induction motor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1372372A4 (en) * 1972-09-20 1976-09-15
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS5345576A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
CH616813B (en) * 1977-12-28 Ebauches Sa ELECTRONIC WATCH PART WITH DETECTION SYSTEM OF END OF BATTERY LIFE.
JPS5515054A (en) * 1978-07-19 1980-02-01 Seiko Instr & Electronics Ltd Electronic watch
DE2944872C2 (en) * 1979-11-07 1981-11-19 Gebrüder Junghans GmbH, 7230 Schramberg Arrangement for controlling a stepper motor for battery-operated devices

Also Published As

Publication number Publication date
DE3104674A1 (en) 1982-01-07
US4425538A (en) 1984-01-10
GB2070813A (en) 1981-09-09
CH641921B (en)
FR2476409A1 (en) 1981-08-21
GB2070813B (en) 1984-04-04
JPS56142475A (en) 1981-11-06
FR2476409B1 (en) 1984-04-27
DE3104674C2 (en) 1990-08-02

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