CH646574GA3 - - Google Patents

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Publication number
CH646574GA3
CH646574GA3 CH538880A CH538880A CH646574GA3 CH 646574G A3 CH646574G A3 CH 646574GA3 CH 538880 A CH538880 A CH 538880A CH 538880 A CH538880 A CH 538880A CH 646574G A3 CH646574G A3 CH 646574GA3
Authority
CH
Switzerland
Prior art keywords
circuit
power source
supply voltage
stepping motor
variation
Prior art date
Application number
CH538880A
Other languages
English (en)
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 CH646574GA3 publication Critical patent/CH646574GA3/fr

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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
CH538880A 1979-07-13 1980-07-14 CH646574GA3 (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH646574GA3 true CH646574GA3 (de) 1984-12-14

Family

ID=13958820

Family Applications (1)

Application Number Title Priority Date Filing Date
CH538880A CH646574GA3 (de) 1979-07-13 1980-07-14

Country Status (8)

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

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 (de) * 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
GB2156172B (en) * 1984-03-19 1988-11-02 Westinghouse Electric Corp Stepper motor torque control apparatus and method
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 (de) * 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
US5933392A (en) * 1995-09-20 1999-08-03 Citizen Watch Co., Ltd. Electronic watch
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
GB2054916B (en) 1983-03-16
FR2461400B1 (de) 1984-11-30
FR2461400A1 (fr) 1981-01-30
HK64686A (en) 1986-09-05
US4437769A (en) 1984-03-20
GB2054916A (en) 1981-02-18
SG21684G (en) 1990-07-06
DE3026321A1 (de) 1981-01-29
JPS5612577A (en) 1981-02-06

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