GB2058414B - Apparatus for controlling stepping motors in electronic time pieces - Google Patents

Apparatus for controlling stepping motors in electronic time pieces

Info

Publication number
GB2058414B
GB2058414B GB8028202A GB8028202A GB2058414B GB 2058414 B GB2058414 B GB 2058414B GB 8028202 A GB8028202 A GB 8028202A GB 8028202 A GB8028202 A GB 8028202A GB 2058414 B GB2058414 B GB 2058414B
Authority
GB
United Kingdom
Prior art keywords
transistors
motor
motors
pairs
electronic time
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.)
Expired
Application number
GB8028202A
Other versions
GB2058414A (en
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.)
Ebauches SA
Original Assignee
Ebauches SA
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 Ebauches SA filed Critical Ebauches SA
Publication of GB2058414A publication Critical patent/GB2058414A/en
Application granted granted Critical
Publication of GB2058414B publication Critical patent/GB2058414B/en
Expired 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
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors

Landscapes

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

Abstract

Apparatus for controlling an electronic time piece having two motors M1, M2 comprises only six power transistors T13 to T18 divided into pairs of transistors of opposite conductivity type, the transistors of each pair being connected in series with each other in a respective switching circuit connected between the supply terminals (+,-). The first motor M1 is connected between the middle connection points of the pairs T13/T14 and T17/T18 and the second motor M2 between the middle connection points of the pairs T17/T18 and T15/T16. The pair of transistors T17/T18 is thus common to the two motors. The circuit provides alternating pulses to each motor M1, M2 or may be used to energize two separate windings of a single motor, for reverse and forward drive. If two motors are used, one may drive a seconds hand and a minutes hand, and the other an hours hand and a date indicator. Opposite conductivity type FETs may be used instead of bipolar transistors. <IMAGE>
GB8028202A 1979-09-07 1980-09-01 Apparatus for controlling stepping motors in electronic time pieces Expired GB2058414B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH809979A CH632128B (en) 1979-09-07 1979-09-07 CONTROL DEVICE FOR TWO STEP MOTORS IN AN ELECTRONIC CLOCK PART.

Publications (2)

Publication Number Publication Date
GB2058414A GB2058414A (en) 1981-04-08
GB2058414B true GB2058414B (en) 1983-04-13

Family

ID=4335141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8028202A Expired GB2058414B (en) 1979-09-07 1980-09-01 Apparatus for controlling stepping motors in electronic time pieces

Country Status (5)

Country Link
JP (1) JPS5646697A (en)
CH (1) CH632128B (en)
DE (1) DE3032838A1 (en)
FR (1) FR2465358A1 (en)
GB (1) GB2058414B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048217A1 (en) * 1980-09-12 1982-03-24 Compagnie des Montres Longines, Francillon S.A. Electronic timepiece
JPS592593A (en) * 1982-06-25 1984-01-09 Sony Corp Normal/reverse circuit for plural motors
CH650125GA3 (en) * 1983-06-29 1985-07-15
US6327225B1 (en) * 1998-12-14 2001-12-04 Seiko Epson Corporation Electronic unit, and control method for electronic unit
DE10007201A1 (en) * 2000-02-17 2001-08-23 Zeiss Carl Jena Gmbh Synchronous control of several stepper motors, involves triggering different step lengths with one period of base frequency for different stepper motors with specifically associated step lengths
US6914855B2 (en) 2002-09-27 2005-07-05 Timex Group B.V. Circuit for driving motor coils in stepping motors
CN102263535A (en) * 2010-05-28 2011-11-30 飞思卡尔半导体公司 Stepper motor controller and stepper motor control method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1451359A (en) * 1973-11-30 1976-09-29 Citizen Watch Co Ltd Pulse motor driven circuit
JPS52125712A (en) * 1976-04-13 1977-10-21 Sanyo Electric Co Ltd Control circuit of electric motor
CH613837B (en) * 1977-06-14 Suisse Horlogerie ELECTRONIC WATCH WITH MECHANICAL DISPLAY.
SE7807961L (en) * 1977-07-20 1979-01-21 Janome Sewing Machine Co Ltd DRIVING DEVICE FOR SEWING MACHINE PULSE ENGINE

Also Published As

Publication number Publication date
FR2465358B1 (en) 1982-12-10
CH632128GA3 (en) 1982-09-30
JPS5646697A (en) 1981-04-27
CH632128B (en)
GB2058414A (en) 1981-04-08
FR2465358A1 (en) 1981-03-20
DE3032838A1 (en) 1981-04-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee