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JPS5696270A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
JPS5696270A
JPS5696270A JP15558380A JP15558380A JPS5696270A JP S5696270 A JPS5696270 A JP S5696270A JP 15558380 A JP15558380 A JP 15558380A JP 15558380 A JP15558380 A JP 15558380A JP S5696270 A JPS5696270 A JP S5696270A
Authority
JP
Japan
Prior art keywords
circuit
pulse
width
pulses
driving
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
JP15558380A
Other languages
Japanese (ja)
Other versions
JPS6123487B2 (en
Inventor
Akio Nakajima
Tadayasu Machida
Kenji Yamada
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP15558380A priority Critical patent/JPS5696270A/en
Publication of JPS5696270A publication Critical patent/JPS5696270A/en
Publication of JPS6123487B2 publication Critical patent/JPS6123487B2/ja
Granted 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
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Landscapes

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

Abstract

PURPOSE:To raise impact resistance and ensure steady drive by making step control of the width of the driving pulses of an electromechanical converter driven in accordance with 2-phase drive pulses by the induction voltage of a driving coil. CONSTITUTION:The output of the flip-flops (FF)117 and 118 of a frequency dividing circuit 202 serves as the input of a pulse selecting circuit 206. In normal operation, small width pulses phi1 and phi2 are alternately generated from the outputs of a pulse converter circuit to drive a pulse motor driving circuit 204. The induction voltage generated from a driving coil 137 is detected by a detecting circuit 209 and the change-over of the pulse selecting circuit 206 of a pulse converting circuit 207 is made by thus-obtained signal. When impact load is received, the width of the output pulses phi1 and phi2 of the circuit 207 increases two times. When the induction voltage returns to the initial value thereof due to the increase of driving power, pulse width returns to the initial value thereof.
JP15558380A 1980-11-05 1980-11-05 Electronic timepiece Granted JPS5696270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15558380A JPS5696270A (en) 1980-11-05 1980-11-05 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15558380A JPS5696270A (en) 1980-11-05 1980-11-05 Electronic timepiece

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9640576A Division JPS5321966A (en) 1976-08-12 1976-08-12 Electric-mechanical converter driving circuit for timepiece

Publications (2)

Publication Number Publication Date
JPS5696270A true JPS5696270A (en) 1981-08-04
JPS6123487B2 JPS6123487B2 (en) 1986-06-06

Family

ID=15609209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15558380A Granted JPS5696270A (en) 1980-11-05 1980-11-05 Electronic timepiece

Country Status (1)

Country Link
JP (1) JPS5696270A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985514A (en) * 1972-12-22 1974-08-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985514A (en) * 1972-12-22 1974-08-16

Also Published As

Publication number Publication date
JPS6123487B2 (en) 1986-06-06

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