JPS54101367A - Pulse motor driving circuit for watches - Google Patents

Pulse motor driving circuit for watches

Info

Publication number
JPS54101367A
JPS54101367A JP806878A JP806878A JPS54101367A JP S54101367 A JPS54101367 A JP S54101367A JP 806878 A JP806878 A JP 806878A JP 806878 A JP806878 A JP 806878A JP S54101367 A JPS54101367 A JP S54101367A
Authority
JP
Japan
Prior art keywords
circuit
driving
pulse motor
ffs
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
JP806878A
Other languages
Japanese (ja)
Other versions
JPS6120238B2 (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 JP806878A priority Critical patent/JPS54101367A/en
Priority to GB7838174A priority patent/GB2006995B/en
Priority to GB8100083A priority patent/GB2064834B/en
Publication of JPS54101367A publication Critical patent/JPS54101367A/en
Priority to US06/158,493 priority patent/US4361410A/en
Publication of JPS6120238B2 publication Critical patent/JPS6120238B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To prevent malfunction of pulse motor by providing a modulating circuit between a waveform converting circuit and a driving circuit. CONSTITUTION:A modulating circuit 110 is provided between a waveform converting circuit 109 and a driving circuit 111 and is connected to a frequency dividing circuit 108 and a detecting circuit 112. Then, the outputs of the FFs 209, 210 of a frequency dividing circuit 108 which has received the output of a crystal oscillation circuit 107 are applied to the FFs 211 thru 213 of the waveform converting circuit 109 and the outputs of the FFs 211, 212, gate circuits 218, 210 are inputted to the gate circuits 223 thru 226 of the modulating circuit 110 and the input of the FF 208 and the output of the FF 208 are inputted to a selection circuit 222 and are controlled by the control signal of a detection circuit 112 so that at the steady time the driving pulses including high frequency pulses are generated and at the abnormal time when the angular speed of the rotor decreases, no output is generated in a detecting inverter 231 and the pulse width of the high frequency voltage being applied to a driving coil 237 increases thereby increasing the driving force of the pulse motor and preventing its malfunction.
JP806878A 1977-09-26 1978-01-27 Pulse motor driving circuit for watches Granted JPS54101367A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP806878A JPS54101367A (en) 1978-01-27 1978-01-27 Pulse motor driving circuit for watches
GB7838174A GB2006995B (en) 1977-09-26 1978-09-26 Drive system for pulse motor
GB8100083A GB2064834B (en) 1977-09-26 1978-09-26 Drive system for stepping motor in a timepiece
US06/158,493 US4361410A (en) 1977-09-26 1980-06-11 Drive system for pulse motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP806878A JPS54101367A (en) 1978-01-27 1978-01-27 Pulse motor driving circuit for watches

Publications (2)

Publication Number Publication Date
JPS54101367A true JPS54101367A (en) 1979-08-09
JPS6120238B2 JPS6120238B2 (en) 1986-05-21

Family

ID=11683019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP806878A Granted JPS54101367A (en) 1977-09-26 1978-01-27 Pulse motor driving circuit for watches

Country Status (1)

Country Link
JP (1) JPS54101367A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213278A (en) * 1982-06-04 1983-12-12 Citizen Watch Co Ltd Reversal driving system of step-motor of electronic clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213278A (en) * 1982-06-04 1983-12-12 Citizen Watch Co Ltd Reversal driving system of step-motor of electronic clock

Also Published As

Publication number Publication date
JPS6120238B2 (en) 1986-05-21

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