JPS558226A - Motor drive device - Google Patents

Motor drive device

Info

Publication number
JPS558226A
JPS558226A JP7947378A JP7947378A JPS558226A JP S558226 A JPS558226 A JP S558226A JP 7947378 A JP7947378 A JP 7947378A JP 7947378 A JP7947378 A JP 7947378A JP S558226 A JPS558226 A JP S558226A
Authority
JP
Japan
Prior art keywords
voltage
hall
constant current
elements
control
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
JP7947378A
Other languages
Japanese (ja)
Inventor
Hiroshi Nakane
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7947378A priority Critical patent/JPS558226A/en
Publication of JPS558226A publication Critical patent/JPS558226A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE: To provide a motor drive device used to drive a turntable or the like by incorporating a control circuit for controlling the balancee voltage of a hall voltage substantially equal in a hall element as a rotor position detector and a feedback circuit for negatively feeding back the terminal voltage of a constant current drive circuit to the standard side.
CONSTITUTION: Control transistors (TR) Q7, Q8 are selectively conducted as a result of comparing the output voltages HB1, HB2 at both terminals of a hall effect element H2 as a rotor position detector with the voltage of a bias power supply EB. Switching transistors Q3, Q4 are alternatively conducted by the relationship between the collector potentials of the control transistors Q7, Q8 and a voltage ES across a constant current drive circuit SD to thus supply a constant current IS alternatively to stator windings W3, W4 to thereby negatively feed back the voltage ES to the hall effect elements H1, H2. The balanced voltage between the hall voltages from the hall voltage output terminals of the elements H1, H2 are extracted, and one of the bias current of the elements H1, H2 is controlled via an operational amplifier A1 by the other thereof as a standard to thereby control so that the balance voltage may become the same as that at the standard side.
COPYRIGHT: (C)1980,JPO&Japio
JP7947378A 1978-06-30 1978-06-30 Motor drive device Pending JPS558226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7947378A JPS558226A (en) 1978-06-30 1978-06-30 Motor drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7947378A JPS558226A (en) 1978-06-30 1978-06-30 Motor drive device

Publications (1)

Publication Number Publication Date
JPS558226A true JPS558226A (en) 1980-01-21

Family

ID=13690852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7947378A Pending JPS558226A (en) 1978-06-30 1978-06-30 Motor drive device

Country Status (1)

Country Link
JP (1) JPS558226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103888A (en) * 1981-12-12 1983-06-21 Akai Electric Co Ltd Driving circuit for brushless motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103888A (en) * 1981-12-12 1983-06-21 Akai Electric Co Ltd Driving circuit for brushless motor

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