CH643426GA3 - - Google Patents

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Publication number
CH643426GA3
CH643426GA3 CH248782A CH248782A CH643426GA3 CH 643426G A3 CH643426G A3 CH 643426GA3 CH 248782 A CH248782 A CH 248782A CH 248782 A CH248782 A CH 248782A CH 643426G A3 CH643426G A3 CH 643426GA3
Authority
CH
Switzerland
Prior art keywords
detection
path
coil
resistance
shows
Prior art date
Application number
CH248782A
Other languages
German (de)
Other versions
CH643426B (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 CH643426B publication Critical patent/CH643426B/en
Priority claimed from JP6179081A external-priority patent/JPS57175977A/en
Priority claimed from JP56185849A external-priority patent/JPS5886480A/en
Application filed filed Critical
Publication of CH643426GA3 publication Critical patent/CH643426GA3/de

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)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

In a stepping motor driven electronic timepiece a detection pulse is supplied to the motor coil to set up, across a detection resistance, a detection voltage the magnitude of which is indicative of whether the motor is in a rotation or a non-rotation condition. A path for the detection pulse current is established through the detection resistance and the coil in series only after establishment of a path which does not include said resistance. In Figure 8 the motor coil is shown at 7, and 40, 41, 42, 43, 44 and 45 represent electronic switches. 24 is the detection resistance. Figure 8a shows the switching state in which there is no detection current path; Figure 8b shows the path 46 in which the coil is included and the detection resistance is not; and Figure 8c shows the path 47 in which the coil and the detection resistance are in series. <IMAGE>
CH248782A 1981-04-23 1982-04-23 METHOD OF DETERMINING ROTOR POSITION IN AN ANALOG DISPLAYING ELECTRIC CLOCK AND ANALOG DISPLAYING ELECTRONIC CLOCK. CH643426B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6179081A JPS57175977A (en) 1981-04-23 1981-04-23 Analogue electronic watch
JP56185849A JPS5886480A (en) 1981-11-19 1981-11-19 Analog electronic timepiece

Publications (2)

Publication Number Publication Date
CH643426B CH643426B (en)
CH643426GA3 true CH643426GA3 (en) 1984-06-15

Family

ID=26402870

Family Applications (1)

Application Number Title Priority Date Filing Date
CH248782A CH643426B (en) 1981-04-23 1982-04-23 METHOD OF DETERMINING ROTOR POSITION IN AN ANALOG DISPLAYING ELECTRIC CLOCK AND ANALOG DISPLAYING ELECTRONIC CLOCK.

Country Status (5)

Country Link
CH (1) CH643426B (en)
DE (1) DE3214543A1 (en)
GB (1) GB2101367B (en)
HK (1) HK10387A (en)
SG (1) SG53286G (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818775B4 (en) * 1997-04-25 2015-09-24 Seiko Instruments Inc. Electronic clock

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016365A1 (en) * 1993-01-18 1994-07-21 Seiko Instruments Inc. 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
US11233477B2 (en) 2018-06-07 2022-01-25 Ab Mikroelektronik Gesellschaft Mit Beschraenkter Haftung Method and system for controlling an electric motor and detecting a stall condition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5643575A (en) * 1979-09-18 1981-04-22 Seiko Instr & Electronics Ltd Electronic clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818775B4 (en) * 1997-04-25 2015-09-24 Seiko Instruments Inc. Electronic clock

Also Published As

Publication number Publication date
DE3214543A1 (en) 1982-11-11
DE3214543C2 (en) 1987-12-03
SG53286G (en) 1988-02-19
GB2101367B (en) 1984-09-05
CH643426B (en)
HK10387A (en) 1987-02-06
GB2101367A (en) 1983-01-12

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