JPS56123791A - Driving circuit for brushless motor - Google Patents

Driving circuit for brushless motor

Info

Publication number
JPS56123791A
JPS56123791A JP2580180A JP2580180A JPS56123791A JP S56123791 A JPS56123791 A JP S56123791A JP 2580180 A JP2580180 A JP 2580180A JP 2580180 A JP2580180 A JP 2580180A JP S56123791 A JPS56123791 A JP S56123791A
Authority
JP
Japan
Prior art keywords
voltage
signal
trt32
emitter
transistor
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.)
Granted
Application number
JP2580180A
Other languages
Japanese (ja)
Other versions
JPS6223554B2 (en
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 JP2580180A priority Critical patent/JPS56123791A/en
Publication of JPS56123791A publication Critical patent/JPS56123791A/en
Publication of JPS6223554B2 publication Critical patent/JPS6223554B2/ja
Granted 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 make a very low speed of a motor possible, by creating a voltage which is higher than a set speed control voltage by a bass to emitter voltage and feeding with it a transistor base whose motor driven coil is connected to an emitter. CONSTITUTION:A position detecting signal from an A phase Hall element 2 is converted into a switch signal by a differential amplifier 3, and supplied to a transistor TrT32 through a series of transistor, and the TrT32 outputs a 180 deg. on-off signal of the positive phase or the negative phase with a control by a positive-negative control circuit 4. TrT17, T18 are controlled by a signal a from the TrT32 and a reverser (a). A current IB supplied from a TrT19 flows to Darlington circuits T13, T14 and T15, T16 with the ''on'' state of TrT17, T18, so that voltage at the connecting point of transistors T1, T2 is controlled to be identical with a speed control voltage VS. In other words, a minimum neccessary current IB to make approximately nil the collector to emitter saturation voltage with the TrT1 in a saturated state can thus be formed.
JP2580180A 1980-02-29 1980-02-29 Driving circuit for brushless motor Granted JPS56123791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2580180A JPS56123791A (en) 1980-02-29 1980-02-29 Driving circuit for brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2580180A JPS56123791A (en) 1980-02-29 1980-02-29 Driving circuit for brushless motor

Publications (2)

Publication Number Publication Date
JPS56123791A true JPS56123791A (en) 1981-09-29
JPS6223554B2 JPS6223554B2 (en) 1987-05-23

Family

ID=12175949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2580180A Granted JPS56123791A (en) 1980-02-29 1980-02-29 Driving circuit for brushless motor

Country Status (1)

Country Link
JP (1) JPS56123791A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63186587A (en) * 1987-01-26 1988-08-02 Matsushita Electric Ind Co Ltd Driver for brushless motor
EP0858152A2 (en) * 1997-02-07 1998-08-12 Matsushita Electric Industrial Co., Ltd. Electronically commutated motor
EP0880223A1 (en) * 1997-05-21 1998-11-25 Matsushita Electric Industrial Co., Ltd. Electronically commutated motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63186587A (en) * 1987-01-26 1988-08-02 Matsushita Electric Ind Co Ltd Driver for brushless motor
EP0858152A2 (en) * 1997-02-07 1998-08-12 Matsushita Electric Industrial Co., Ltd. Electronically commutated motor
EP0858152A3 (en) * 1997-02-07 1998-11-04 Matsushita Electric Industrial Co., Ltd. Electronically commutated motor
US5959418A (en) * 1997-02-07 1999-09-28 Matsushita Electric Industrial Co., Ltd. Motor with electronic distributing configuration
EP0880223A1 (en) * 1997-05-21 1998-11-25 Matsushita Electric Industrial Co., Ltd. Electronically commutated motor
US6172474B1 (en) 1997-05-21 2001-01-09 Matsushita Electric Industrial Co., Ltd. Motor with electronic distributing configuration

Also Published As

Publication number Publication date
JPS6223554B2 (en) 1987-05-23

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