CH630224B - Circuit d'entrainement pour commander un moteur pas a pas d'une piece d'horlogerie electronique, notamment une montre-bracelet electronique, en direction de recul. - Google Patents

Circuit d'entrainement pour commander un moteur pas a pas d'une piece d'horlogerie electronique, notamment une montre-bracelet electronique, en direction de recul.

Info

Publication number
CH630224B
CH630224B CH447578A CH447578A CH630224B CH 630224 B CH630224 B CH 630224B CH 447578 A CH447578 A CH 447578A CH 447578 A CH447578 A CH 447578A CH 630224 B CH630224 B CH 630224B
Authority
CH
Switzerland
Prior art keywords
electronic
step motor
controlling
drive circuit
reverse direction
Prior art date
Application number
CH447578A
Other languages
English (en)
Other versions
CH630224GA3 (en
Inventor
Norio Takahashi
Original Assignee
Seiko Instr & Electronics
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 of CH630224B publication Critical patent/CH630224B/fr
Application filed by Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of CH630224GA3 publication Critical patent/CH630224GA3/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
    • 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

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)
CH447578A 1977-04-25 1978-04-25 Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction CH630224GA3 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
CH630224B true CH630224B (fr)
CH630224GA3 CH630224GA3 (en) 1982-06-15

Family

ID=12781603

Family Applications (1)

Application Number Title Priority Date Filing Date
CH447578A CH630224GA3 (en) 1977-04-25 1978-04-25 Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction

Country Status (4)

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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740759B2 (fr) * 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
DE2817565A1 (de) 1978-11-02
FR2389168B1 (fr) 1983-10-21
FR2389168A1 (fr) 1978-11-24
CH630224GA3 (en) 1982-06-15
JPS53133066A (en) 1978-11-20

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Legal Events

Date Code Title Description
PL Patent ceased