JPS5342860A - Electronic wristwatch - Google Patents

Electronic wristwatch

Info

Publication number
JPS5342860A
JPS5342860A JP11740676A JP11740676A JPS5342860A JP S5342860 A JPS5342860 A JP S5342860A JP 11740676 A JP11740676 A JP 11740676A JP 11740676 A JP11740676 A JP 11740676A JP S5342860 A JPS5342860 A JP S5342860A
Authority
JP
Japan
Prior art keywords
step motor
electronic wristwatch
driving current
waveform
rotor
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.)
Granted
Application number
JP11740676A
Other languages
Japanese (ja)
Other versions
JPS6113191B2 (en
Inventor
Hiroshi Ishii
Minoru Hosokawa
Kiichi Kawamura
Sakio Okazaki
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP11740676A priority Critical patent/JPS5342860A/en
Publication of JPS5342860A publication Critical patent/JPS5342860A/en
Publication of JPS6113191B2 publication Critical patent/JPS6113191B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components

Landscapes

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

Abstract

PURPOSE:A step motor is driven always under minimum power consumption by detecting the revolving condition of its rotor from the waveform of step motor driving current, cutting off more than necessary driving current and changing the driving pulse width according to the magnitude of load.
JP11740676A 1976-09-30 1976-09-30 Electronic wristwatch Granted JPS5342860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11740676A JPS5342860A (en) 1976-09-30 1976-09-30 Electronic wristwatch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11740676A JPS5342860A (en) 1976-09-30 1976-09-30 Electronic wristwatch

Publications (2)

Publication Number Publication Date
JPS5342860A true JPS5342860A (en) 1978-04-18
JPS6113191B2 JPS6113191B2 (en) 1986-04-11

Family

ID=14710848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11740676A Granted JPS5342860A (en) 1976-09-30 1976-09-30 Electronic wristwatch

Country Status (1)

Country Link
JP (1) JPS5342860A (en)

Also Published As

Publication number Publication date
JPS6113191B2 (en) 1986-04-11

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