JPS56123792A - Motor driving circuit - Google Patents

Motor driving circuit

Info

Publication number
JPS56123792A
JPS56123792A JP2580280A JP2580280A JPS56123792A JP S56123792 A JPS56123792 A JP S56123792A JP 2580280 A JP2580280 A JP 2580280A JP 2580280 A JP2580280 A JP 2580280A JP S56123792 A JPS56123792 A JP S56123792A
Authority
JP
Japan
Prior art keywords
switching transistors
current
driving circuit
transistors
base current
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.)
Pending
Application number
JP2580280A
Other languages
Japanese (ja)
Inventor
Mitsuo Uzuka
Shunsuke Kohama
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP2580280A priority Critical patent/JPS56123792A/en
Publication of JPS56123792A publication Critical patent/JPS56123792A/en
Pending legal-status Critical Current

Links

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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/34—Modelling or simulation for control purposes

Landscapes

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

Abstract

PURPOSE:To reduce power consumption of a driving circuit for a two phase brushless motor as low as need be, by controlling automatically a base current of a switching transistor for a current change-over according to the values of a flow current in each phase coil. CONSTITUTION:Transistors Q1, Q2 enter alternately in an on-off state by position detecting signals A, B from a Hall element 2. By a base current IB thus obtained, switching transistors Q3, Q4 are controlled and a flow current control on coils 1A, 1B can be achieved. Collector voltages of the switching transistors Q3, Q4 are detected by diodes D1-D3. With these detected signals the base current IB of the switching transistors Q3, Q4 is automatically controlled by a transistor Q5, so that the switching transistors Q3, Q4 can be operated almost in a saturated state.
JP2580280A 1980-02-29 1980-02-29 Motor driving circuit Pending JPS56123792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2580280A JPS56123792A (en) 1980-02-29 1980-02-29 Motor driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2580280A JPS56123792A (en) 1980-02-29 1980-02-29 Motor driving circuit

Publications (1)

Publication Number Publication Date
JPS56123792A true JPS56123792A (en) 1981-09-29

Family

ID=12175980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2580280A Pending JPS56123792A (en) 1980-02-29 1980-02-29 Motor driving circuit

Country Status (1)

Country Link
JP (1) JPS56123792A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191896U (en) * 1983-06-06 1984-12-19 ソニー株式会社 switching circuit
JPS60125193A (en) * 1983-12-09 1985-07-04 Matsushita Electric Ind Co Ltd Electronic commutator motor drive circuit
JPS6225869A (en) * 1985-07-24 1987-02-03 Shinko Electric Co Ltd Dipping type electromagnetic pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54162117A (en) * 1978-06-13 1979-12-22 Matsushita Electric Ind Co Ltd Electronic commutator type motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54162117A (en) * 1978-06-13 1979-12-22 Matsushita Electric Ind Co Ltd Electronic commutator type motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191896U (en) * 1983-06-06 1984-12-19 ソニー株式会社 switching circuit
JPS60125193A (en) * 1983-12-09 1985-07-04 Matsushita Electric Ind Co Ltd Electronic commutator motor drive circuit
JPS6225869A (en) * 1985-07-24 1987-02-03 Shinko Electric Co Ltd Dipping type electromagnetic pump

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