CH576164B5 - - Google Patents

Info

Publication number
CH576164B5
CH576164B5 CH323674A CH323674A CH576164B5 CH 576164 B5 CH576164 B5 CH 576164B5 CH 323674 A CH323674 A CH 323674A CH 323674 A CH323674 A CH 323674A CH 576164 B5 CH576164 B5 CH 576164B5
Authority
CH
Switzerland
Application number
CH323674A
Original Assignee
Seiko Instr & Electronics
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 Seiko Instr & Electronics filed Critical Seiko Instr & Electronics
Publication of CH576164B5 publication Critical patent/CH576164B5/xx

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
    • G04C3/16—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
    • H02P8/14—Arrangements for controlling speed or speed and torque
    • H02P8/16—Reducing energy dissipated or supplied
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P8/00—Arrangements for controlling dynamo-electric motors rotating step by step
    • H02P8/32—Reducing overshoot or oscillation, e.g. damping

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
CH323674A 1973-03-07 1974-03-07 CH576164B5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2610273A JPS6024680B2 (en) 1973-03-07 1973-03-07 Clock step motor drive circuit

Publications (1)

Publication Number Publication Date
CH576164B5 true CH576164B5 (en) 1976-05-31

Family

ID=12184218

Family Applications (2)

Application Number Title Priority Date Filing Date
CH323674D CH323674A4 (en) 1973-03-07 1974-03-07
CH323674A CH576164B5 (en) 1973-03-07 1974-03-07

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH323674D CH323674A4 (en) 1973-03-07 1974-03-07

Country Status (5)

Country Link
JP (1) JPS6024680B2 (en)
CH (2) CH323674A4 (en)
DE (1) DE2409925C2 (en)
FR (1) FR2220919B1 (en)
GB (1) GB1434682A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5345575A (en) * 1976-10-06 1978-04-24 Seiko Epson Corp Electronic wristwatch
JPS5370876A (en) * 1976-12-07 1978-06-23 Seiko Instr & Electronics Ltd Electronic wristwatch
JPS53114467A (en) * 1977-03-16 1978-10-05 Seiko Instr & Electronics Ltd Electronic watch
JPS53136870A (en) * 1977-04-23 1978-11-29 Seiko Instr & Electronics Ltd Electronic watch
JPS53132381A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132386A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132385A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132383A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch circuit
JPS53132382A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS53132384A (en) * 1977-04-23 1978-11-18 Seiko Instr & Electronics Ltd Electronic watch
JPS5477169A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch
JPS55147381A (en) * 1979-05-04 1980-11-17 Seiko Instr & Electronics Ltd Detector for electronic watch
FR2459579A1 (en) * 1979-06-21 1981-01-09 Suisse Horlogerie ADVANCE DETECTOR OF A STEP BY STEP MOTOR
CH640999B (en) * 1980-08-25 Ebauchesfabrik Eta Ag METHOD AND DEVICE FOR CONTROLLING A STEP MOTOR OF AN ELECTRONIC CLOCK PART.
DE3043634A1 (en) * 1980-11-19 1982-06-03 Eurosil GmbH, 8000 München POLWENDER DRIVER CIRCUIT, FOR A STEPPING MOTOR, ESPECIALLY FOR WATCHES
CH644989GA3 (en) * 1981-03-18 1984-09-14

Also Published As

Publication number Publication date
DE2409925A1 (en) 1974-09-12
FR2220919A1 (en) 1974-10-04
JPS6024680B2 (en) 1985-06-14
CH323674A4 (en) 1975-12-31
GB1434682A (en) 1976-05-05
JPS49114020A (en) 1974-10-31
DE2409925C2 (en) 1982-09-16
FR2220919B1 (en) 1978-09-29

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Legal Events

Date Code Title Description
PL Patent ceased