JPS5720187A - Driving circuit for brushless motor - Google Patents

Driving circuit for brushless motor

Info

Publication number
JPS5720187A
JPS5720187A JP9435880A JP9435880A JPS5720187A JP S5720187 A JPS5720187 A JP S5720187A JP 9435880 A JP9435880 A JP 9435880A JP 9435880 A JP9435880 A JP 9435880A JP S5720187 A JPS5720187 A JP S5720187A
Authority
JP
Japan
Prior art keywords
npn
transistors
driving circuit
transistor
pnp
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
JP9435880A
Other languages
Japanese (ja)
Inventor
Akira Torisawa
Takuzo Sugano
Tatsuya Yanai
Takashi Ishida
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP9435880A priority Critical patent/JPS5720187A/en
Publication of JPS5720187A publication Critical patent/JPS5720187A/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
    • H02P6/14—Electronic commutators

Landscapes

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

Abstract

PURPOSE:To enable a brushless motor to be operated at a low voltage and with a small current, by forming said driving circuit by combining NPN and PNP transistors. CONSTITUTION:The input of a rotor position-detecting part is supplied to the connecting point A between the bases of an NPN transistor TR41 and a PNP transistor TR43 which are connected in an emitter follower connection manner, while the output of a control signal-exchanging part 38 is supplied to the respective collectors thereof. Moreover, the outputs of the transistors TR41 and 43 are supplied to the combination of an NPN transistor TR47 and a PNP transistor TR50 and the combination of a PNP transistor TR51 and an NPN transistor TR51 respectively, each of said combinations being formed in a Darlington connection manner. Then, the connecting point B between the collectors of the respective transistors TR50 and TR51 is connected to the coil of a motor. Because a driving circuit 33 is formed by thus combining the NPN and PNP transistors, said circuit can be operated at a low voltage as well as with a small base current.
JP9435880A 1980-07-10 1980-07-10 Driving circuit for brushless motor Pending JPS5720187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9435880A JPS5720187A (en) 1980-07-10 1980-07-10 Driving circuit for brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9435880A JPS5720187A (en) 1980-07-10 1980-07-10 Driving circuit for brushless motor

Publications (1)

Publication Number Publication Date
JPS5720187A true JPS5720187A (en) 1982-02-02

Family

ID=14108065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9435880A Pending JPS5720187A (en) 1980-07-10 1980-07-10 Driving circuit for brushless motor

Country Status (1)

Country Link
JP (1) JPS5720187A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186388A (en) * 1982-04-21 1983-10-31 Matsushita Electric Ind Co Ltd Dc motor
JPS6277084A (en) * 1985-09-27 1987-04-09 Toshiba Corp Hall motor drive circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186388A (en) * 1982-04-21 1983-10-31 Matsushita Electric Ind Co Ltd Dc motor
JPS6277084A (en) * 1985-09-27 1987-04-09 Toshiba Corp Hall motor drive circuit

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