JPS5773690A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
JPS5773690A
JPS5773690A JP14903080A JP14903080A JPS5773690A JP S5773690 A JPS5773690 A JP S5773690A JP 14903080 A JP14903080 A JP 14903080A JP 14903080 A JP14903080 A JP 14903080A JP S5773690 A JPS5773690 A JP S5773690A
Authority
JP
Japan
Prior art keywords
coil
rotor
generating circuit
time
voltage induced
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
JP14903080A
Other languages
Japanese (ja)
Inventor
Shigeru Aoyama
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 Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
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 Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP14903080A priority Critical patent/JPS5773690A/en
Publication of JPS5773690A publication Critical patent/JPS5773690A/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 prevent malfunction by discriminating the erroneous advance of a rotor, by detecting the time position of a voltage induced across a coil until the rotor stops owing to an overshoot. CONSTITUTION:After a driving pulse is applied from a generating circuit 15 for an electromagnetic-coil switching pulse to the driving coil 44 of a step motor, a signal having time lag is generated and applied to one-side inputs of AND circuits 27-30. Then, when a rotor 49 is driven and voltage induced at inverters 46 and 47 are lower than a prescribed voltage at the point in time of the output signal of the generating circuit 15, R-Ss FF39-FF42 are set or reset and the output of an OR circuit 33 is held at a level H, thereby applying compensation pulses to the coil 44.
JP14903080A 1980-10-24 1980-10-24 Electronic timepiece Pending JPS5773690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14903080A JPS5773690A (en) 1980-10-24 1980-10-24 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14903080A JPS5773690A (en) 1980-10-24 1980-10-24 Electronic timepiece

Publications (1)

Publication Number Publication Date
JPS5773690A true JPS5773690A (en) 1982-05-08

Family

ID=15466128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14903080A Pending JPS5773690A (en) 1980-10-24 1980-10-24 Electronic timepiece

Country Status (1)

Country Link
JP (1) JPS5773690A (en)

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