JPS5559375A - Step-motor for electronic watch - Google Patents

Step-motor for electronic watch

Info

Publication number
JPS5559375A
JPS5559375A JP13304678A JP13304678A JPS5559375A JP S5559375 A JPS5559375 A JP S5559375A JP 13304678 A JP13304678 A JP 13304678A JP 13304678 A JP13304678 A JP 13304678A JP S5559375 A JPS5559375 A JP S5559375A
Authority
JP
Japan
Prior art keywords
motor
pulse
circuit
turning
electronic watch
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.)
Pending
Application number
JP13304678A
Other languages
Japanese (ja)
Inventor
Shuji Otawa
Akira Torisawa
Jun Ueda
Masaaki Bandai
Masaharu Shida
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
Priority to JP13304678A priority Critical patent/JPS5559375A/en
Publication of JPS5559375A publication Critical patent/JPS5559375A/en
Pending legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To always ensure the reversion of the step-motor for the electronic watch by varying the fixed pulse duration of the reversing pulse formed by plural number of pulses in accordance with the variation of the battery voltage. CONSTITUTION:The rotor of step-motor 58 stops at the position of the fixed angle after turning forward and then reverses by the 1st pulse of the plural number of pulses formed by oscillator circuit 51, divider circuit 52 and waveform compounding circuit 53 each. And the duration of the forward turning pulse varies according to the battery voltage and via voltage detector circuit 55 and reverse pulse duration selection circuit 56. As a result, the reverse turning can always be ensured for the step-motor.
JP13304678A 1978-10-28 1978-10-28 Step-motor for electronic watch Pending JPS5559375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13304678A JPS5559375A (en) 1978-10-28 1978-10-28 Step-motor for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13304678A JPS5559375A (en) 1978-10-28 1978-10-28 Step-motor for electronic watch

Publications (1)

Publication Number Publication Date
JPS5559375A true JPS5559375A (en) 1980-05-02

Family

ID=15095537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13304678A Pending JPS5559375A (en) 1978-10-28 1978-10-28 Step-motor for electronic watch

Country Status (1)

Country Link
JP (1) JPS5559375A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280063A (en) * 1975-12-26 1977-07-05 Citizen Watch Co Ltd Reversible pulse motor system and watch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280063A (en) * 1975-12-26 1977-07-05 Citizen Watch Co Ltd Reversible pulse motor system and watch

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