FR2461400B1 - - Google Patents

Info

Publication number
FR2461400B1
FR2461400B1 FR8014725A FR8014725A FR2461400B1 FR 2461400 B1 FR2461400 B1 FR 2461400B1 FR 8014725 A FR8014725 A FR 8014725A FR 8014725 A FR8014725 A FR 8014725A FR 2461400 B1 FR2461400 B1 FR 2461400B1
Authority
FR
France
Prior art keywords
circuit
power source
supply voltage
stepping motor
variation
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.)
Expired
Application number
FR8014725A
Other languages
English (en)
Other versions
FR2461400A1 (fr
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of FR2461400A1 publication Critical patent/FR2461400A1/fr
Application granted granted Critical
Publication of FR2461400B1 publication Critical patent/FR2461400B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
    • 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)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Electric Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR8014725A 1979-07-13 1980-07-02 Circuit d'alimentation d'un moteur pas a pas pour montre electronique Granted FR2461400A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8900879A JPS5612577A (en) 1979-07-13 1979-07-13 Electronic clock

Publications (2)

Publication Number Publication Date
FR2461400A1 FR2461400A1 (fr) 1981-01-30
FR2461400B1 true FR2461400B1 (fr) 1984-11-30

Family

ID=13958820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8014725A Granted FR2461400A1 (fr) 1979-07-13 1980-07-02 Circuit d'alimentation d'un moteur pas a pas pour montre electronique

Country Status (8)

Country Link
US (1) US4437769A (fr)
JP (1) JPS5612577A (fr)
CH (1) CH646574GA3 (fr)
DE (1) DE3026321A1 (fr)
FR (1) FR2461400A1 (fr)
GB (1) GB2054916B (fr)
HK (1) HK64686A (fr)
SG (1) SG21684G (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock
CH632383B (fr) * 1980-04-16 Ebauchesfabrik Eta Ag Piece d'horlogerie electronique.
CH647383GA3 (fr) * 1981-02-04 1985-01-31
JPS5866090A (ja) * 1981-10-15 1983-04-20 Seikosha Co Ltd 電子時計
JPS5980147A (ja) * 1982-10-29 1984-05-09 Rhythm Watch Co Ltd 時計用小型モ−タ
CA1239439A (fr) * 1984-03-19 1988-07-19 William E. Schmitz Dispositif et methode de commande de couple pour moteur pas a pas multiphase
JPS6189625A (ja) * 1984-10-09 1986-05-07 Canon Inc 堆積膜形成法
JPS6190423A (ja) * 1984-10-10 1986-05-08 Canon Inc 堆積膜形成法
JPS61164184A (ja) * 1985-01-17 1986-07-24 Seiko Instr & Electronics Ltd 電子メトロノ−ム
JPS61165965U (fr) * 1985-04-05 1986-10-15
CH671135GA3 (en) * 1987-12-11 1989-08-15 Control method for stepper motor - using magnetic field detector allowing compensation for ambient magnetic field by adjusting drive pulses
DE69621392T2 (de) * 1995-09-20 2003-01-09 Citizen Watch Co., Ltd. Elektronische Uhr
JP2946091B2 (ja) 1998-02-18 1999-09-06 セイコーインスツルメンツ株式会社 スイッチング・レギュレーター
JP3678075B2 (ja) * 1998-12-09 2005-08-03 セイコーエプソン株式会社 電源装置およびその制御方法、携帯型電子機器、計時装置およびその制御方法

Also Published As

Publication number Publication date
SG21684G (en) 1990-07-06
CH646574GA3 (fr) 1984-12-14
GB2054916B (en) 1983-03-16
FR2461400A1 (fr) 1981-01-30
HK64686A (en) 1986-09-05
JPS5612577A (en) 1981-02-06
DE3026321A1 (de) 1981-01-29
GB2054916A (en) 1981-02-18
US4437769A (en) 1984-03-20

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right