CH630224GA3 - Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction - Google Patents

Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction Download PDF

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Publication number
CH630224GA3
CH630224GA3 CH447578A CH447578A CH630224GA3 CH 630224G A3 CH630224G A3 CH 630224GA3 CH 447578 A CH447578 A CH 447578A CH 447578 A CH447578 A CH 447578A CH 630224G A3 CH630224G A3 CH 630224GA3
Authority
CH
Switzerland
Prior art keywords
electronic
controlling
drive circuit
reverse direction
stepper motor
Prior art date
Application number
CH447578A
Other languages
French (fr)
Other versions
CH630224B (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 CH630224B publication Critical patent/CH630224B/en
Application filed filed Critical
Publication of CH630224GA3 publication Critical patent/CH630224GA3/en

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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)

Abstract

PURPOSE:To enable reverse fast feeding of a step motor by providing a means to detect the position of the rotor only in reverse rotation so as to generate pulses in ideal timing in other circuit without using pulses in the driving stage.
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 CH630224B (en)
CH630224GA3 true 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 (en)
CH (1) CH630224GA3 (en)
DE (1) DE2817565A1 (en)
FR (1) FR2389168A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740759B2 (en) * 1973-07-17 1982-08-30
JPS51101577A (en) * 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
FR2389168A1 (en) 1978-11-24
JPS53133066A (en) 1978-11-20
FR2389168B1 (en) 1983-10-21
DE2817565A1 (en) 1978-11-02
CH630224B (en)

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Legal Events

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PL Patent ceased