CH657960GA3 - - Google Patents

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Publication number
CH657960GA3
CH657960GA3 CH148284A CH148284A CH657960GA3 CH 657960G A3 CH657960G A3 CH 657960GA3 CH 148284 A CH148284 A CH 148284A CH 148284 A CH148284 A CH 148284A CH 657960G A3 CH657960G A3 CH 657960GA3
Authority
CH
Switzerland
Prior art keywords
pulses
auxiliary transistor
winding
catch
motor
Prior art date
Application number
CH148284A
Other languages
French (fr)
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 filed Critical
Priority to CH148284A priority Critical patent/CH657960GA3/fr
Priority to US06/711,846 priority patent/US4626760A/en
Priority to DE8585103107T priority patent/DE3574062D1/en
Priority to EP85103107A priority patent/EP0155661B1/en
Priority to JP60057582A priority patent/JPS60213299A/en
Publication of CH657960GA3 publication Critical patent/CH657960GA3/fr

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Classifications

    • 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
    • H02P8/12—Control or stabilisation of current
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The control circuit comprises means for measuring current flow in the motor winding including an auxiliary transistor and means to form periodically a current mirror from such auxiliary transistor and one of the transistors coupled to the winding for applying thereto energization pulses, i.e. motor drive pulses, catch-up pulses or check pulses.
CH148284A 1984-03-23 1984-03-23 CH657960GA3 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH148284A CH657960GA3 (en) 1984-03-23 1984-03-23
US06/711,846 US4626760A (en) 1984-03-23 1985-03-14 Control circuit for a stepping motor
DE8585103107T DE3574062D1 (en) 1984-03-23 1985-03-18 Control circuit for a stepping motor
EP85103107A EP0155661B1 (en) 1984-03-23 1985-03-18 Control circuit for a stepping motor
JP60057582A JPS60213299A (en) 1984-03-23 1985-03-23 Control circuit for stepping motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH148284A CH657960GA3 (en) 1984-03-23 1984-03-23

Publications (1)

Publication Number Publication Date
CH657960GA3 true CH657960GA3 (en) 1986-10-15

Family

ID=4211496

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148284A CH657960GA3 (en) 1984-03-23 1984-03-23

Country Status (5)

Country Link
US (1) US4626760A (en)
EP (1) EP0155661B1 (en)
JP (1) JPS60213299A (en)
CH (1) CH657960GA3 (en)
DE (1) DE3574062D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672572B5 (en) * 1988-06-01 1990-06-15 Detra Sa
IT1228755B (en) * 1989-03-28 1991-07-03 Sgs Thomson Microelectronics ELECTRONIC CIRCUIT FOR THE MEASUREMENT AND CONTROL OF THE CIRCULATING CURRENT ON AN INDUCTIVE ELECTRIC LOAD.
DE4339553C1 (en) * 1993-11-19 1995-06-22 Sgs Thomson Microelectronics Driver circuit for a stepper motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114364A (en) * 1976-01-29 1978-09-19 Kabushiki Kaisha Daini Seikosha Driving pulse width controlling circuit for a transducer of an electronic timepiece
EP0087583A1 (en) * 1982-03-01 1983-09-07 International Business Machines Corporation Integrated power circuit with current sensing means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560821A (en) * 1969-04-21 1971-02-02 Sigma Instruments Inc Pulse type drive circuit for an inductive load
JPS5010433A (en) * 1973-06-04 1975-02-03
JPS6052673B2 (en) * 1977-11-21 1985-11-20 日本電気株式会社 motor speed control circuit
US4544878A (en) * 1983-10-04 1985-10-01 At&T Bell Laboratories Switched current mirror

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114364A (en) * 1976-01-29 1978-09-19 Kabushiki Kaisha Daini Seikosha Driving pulse width controlling circuit for a transducer of an electronic timepiece
EP0087583A1 (en) * 1982-03-01 1983-09-07 International Business Machines Corporation Integrated power circuit with current sensing means

Also Published As

Publication number Publication date
EP0155661B1 (en) 1989-11-02
US4626760A (en) 1986-12-02
EP0155661A1 (en) 1985-09-25
JPH0130400B2 (en) 1989-06-19
JPS60213299A (en) 1985-10-25
DE3574062D1 (en) 1989-12-07

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Legal Events

Date Code Title Description
PL Patent ceased