DE2817565A1 - Elektronische uhr - Google Patents

Elektronische uhr

Info

Publication number
DE2817565A1
DE2817565A1 DE19782817565 DE2817565A DE2817565A1 DE 2817565 A1 DE2817565 A1 DE 2817565A1 DE 19782817565 DE19782817565 DE 19782817565 DE 2817565 A DE2817565 A DE 2817565A DE 2817565 A1 DE2817565 A1 DE 2817565A1
Authority
DE
Germany
Prior art keywords
current
rotor
circuit
signal
value
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.)
Withdrawn
Application number
DE19782817565
Other languages
German (de)
English (en)
Inventor
Norio Takahashi
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 DE2817565A1 publication Critical patent/DE2817565A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor

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)
DE19782817565 1977-04-25 1978-04-21 Elektronische uhr Withdrawn DE2817565A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4766777A JPS53133066A (en) 1977-04-25 1977-04-25 Electronic watch

Publications (1)

Publication Number Publication Date
DE2817565A1 true DE2817565A1 (de) 1978-11-02

Family

ID=12781603

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782817565 Withdrawn DE2817565A1 (de) 1977-04-25 1978-04-21 Elektronische uhr

Country Status (4)

Country Link
JP (1) JPS53133066A (enrdf_load_stackoverflow)
CH (1) CH630224GA3 (enrdf_load_stackoverflow)
DE (1) DE2817565A1 (enrdf_load_stackoverflow)
FR (1) FR2389168A1 (enrdf_load_stackoverflow)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740759B2 (enrdf_load_stackoverflow) * 1973-07-17 1982-08-30
JPS51101577A (ja) * 1975-03-04 1976-09-08 Seiko Instr & Electronics Denshidokeisochinoshuseisochi
JPS51126880A (en) * 1975-04-26 1976-11-05 Seiko Instr & Electronics Ltd Automatic control circuit of pulse width
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch

Also Published As

Publication number Publication date
JPS53133066A (en) 1978-11-20
CH630224GA3 (en) 1982-06-15
CH630224B (fr)
FR2389168B1 (enrdf_load_stackoverflow) 1983-10-21
FR2389168A1 (fr) 1978-11-24

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Legal Events

Date Code Title Description
8130 Withdrawal