JPS54134667A - Drive control system of pulse motor for watch - Google Patents

Drive control system of pulse motor for watch

Info

Publication number
JPS54134667A
JPS54134667A JP4218078A JP4218078A JPS54134667A JP S54134667 A JPS54134667 A JP S54134667A JP 4218078 A JP4218078 A JP 4218078A JP 4218078 A JP4218078 A JP 4218078A JP S54134667 A JPS54134667 A JP S54134667A
Authority
JP
Japan
Prior art keywords
pulse motor
voltage
dividing
circuit
output
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
JP4218078A
Other languages
Japanese (ja)
Other versions
JPS6261910B2 (en
Inventor
Yoshiaki Kato
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 JP4218078A priority Critical patent/JPS54134667A/en
Publication of JPS54134667A publication Critical patent/JPS54134667A/en
Publication of JPS6261910B2 publication Critical patent/JPS6261910B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143Means 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 control the pulse motor reliably and securely, by detecting the potential of center tap of driving coil and controlling the driving of pulse motor. CONSTITUTION:By a detection circuit 9 comprising an inverter 10 which is adjusted to threshold voltage Vth by voltage dividing resistors r1, r3 in connection with a center tap B provided in the middle point of a driving coil 8 of a pulse motor, the induced voltage V of the tap point B is detected, and a counter 11 counts the dividing output phi1 of dividing circuit 2 until the voltage V becomes equal to voltage Vth, so that the time t until the voltage at point B reaches voltage Vth may be determined. On the other hand, a counter 13 counts the dividing output phi2 which is lower in frequency than the output phi1 from the circuit 2, and when the counts by the counter 11, 13 coincide with each other, a coincidence output is applied inot the inverter 16 from a coincidence circuit 15, so that AND gates 4, 5 are closed. Therefore, pulses having width corresponding to the required torque are applied to the coil 8, so that the driving of pulse motor may be controlled reliably and securely.
JP4218078A 1978-04-12 1978-04-12 Drive control system of pulse motor for watch Granted JPS54134667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4218078A JPS54134667A (en) 1978-04-12 1978-04-12 Drive control system of pulse motor for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4218078A JPS54134667A (en) 1978-04-12 1978-04-12 Drive control system of pulse motor for watch

Publications (2)

Publication Number Publication Date
JPS54134667A true JPS54134667A (en) 1979-10-19
JPS6261910B2 JPS6261910B2 (en) 1987-12-23

Family

ID=12628781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4218078A Granted JPS54134667A (en) 1978-04-12 1978-04-12 Drive control system of pulse motor for watch

Country Status (1)

Country Link
JP (1) JPS54134667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000236696A (en) * 1999-02-16 2000-08-29 Oriental Motor Co Ltd Method and apparatus for controlling stepping motor, and steeping motor system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3432470B2 (en) * 1992-03-18 2003-08-04 シチズン時計株式会社 Electronics
WO1993019404A1 (en) * 1992-03-18 1993-09-30 Citizen Watch Co., Ltd. Electronic machine with vibratory alarm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000236696A (en) * 1999-02-16 2000-08-29 Oriental Motor Co Ltd Method and apparatus for controlling stepping motor, and steeping motor system
JP4498518B2 (en) * 1999-02-16 2010-07-07 オリエンタルモーター株式会社 Stepping motor control method and control apparatus, and stepping motor system

Also Published As

Publication number Publication date
JPS6261910B2 (en) 1987-12-23

Similar Documents

Publication Publication Date Title
US4208868A (en) Control device for a step-by-step motor
CH640387GA3 (en)
JPS56158978A (en) Electronic watch
AU559829B2 (en) Controlling inverterfed a.c. motor
JPS5515054A (en) Electronic watch
EP0141859A4 (en) Servo control circuit.
US4489262A (en) Device for controlling a reluctance motor
JPS5653588A (en) Main shaft rotation control system
JPS54134667A (en) Drive control system of pulse motor for watch
GB1342849A (en) Pulse rate control motor speed control system with feedback
JPS5587076A (en) Electronic watch
JPS5777984A (en) Electronic clock
JPS5631391A (en) Controlling device for commutatorless motor
JPS5345576A (en) Electronic wristwatch
JPS5587077A (en) Detector for electronic watch
JPS5583871A (en) Driving system of step motor for watch
JPS57106397A (en) Driving device for stepping motor
GB1413196A (en) Magnetic switching device
JPS5566780A (en) Electronic watch
JPS5773690A (en) Electronic timepiece
JPS54101367A (en) Pulse motor driving circuit for watches
JPS55139083A (en) Speed control circuit of motor
JPS53112410A (en) Motor
JPS57110100A (en) Driving system for pulse motor
JPS54121104A (en) Control unit of cassette decks