JPS5549964A - Driver for brushless dc motor - Google Patents

Driver for brushless dc motor

Info

Publication number
JPS5549964A
JPS5549964A JP12264478A JP12264478A JPS5549964A JP S5549964 A JPS5549964 A JP S5549964A JP 12264478 A JP12264478 A JP 12264478A JP 12264478 A JP12264478 A JP 12264478A JP S5549964 A JPS5549964 A JP S5549964A
Authority
JP
Japan
Prior art keywords
integrated
circuit
rotor position
signal
switching
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
JP12264478A
Other languages
Japanese (ja)
Inventor
Takuo Ono
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 JP12264478A priority Critical patent/JPS5549964A/en
Publication of JPS5549964A publication Critical patent/JPS5549964A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate wiring between switching elements and scattering due to disturbance and temperature change, raise the reliability and reduce the size, by using switching integrated circuits wherein rotor position detectors and signal processing circuits are integrated as a unitary body.
CONSTITUTION: As for a magnetism-to-electricity conversion system, a rotor position detecting magnet 21 magnetized to an N or S-pole for an angle of 120° is mounted on a rotary shaft 23 and rotor position detecting switching elements 20a∼ 20c are provided at a spacing of 120° on a mount 19. Each switching element is made of an integrated circuit or the like. In the integrated circuit, a constant current circuit comprising a Zener diode 27 and an operational amplifier 28a, a signal circuit comprising a Hall element 20a and an operational amplifier 28b and a level discrimination circuit of a Zener diode 35 are integrated with one another. A signal is supplied to a transistor 37 through a lead wire 25 to drive an armature winding 38a.
COPYRIGHT: (C)1980,JPO&Japio
JP12264478A 1978-10-06 1978-10-06 Driver for brushless dc motor Pending JPS5549964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12264478A JPS5549964A (en) 1978-10-06 1978-10-06 Driver for brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12264478A JPS5549964A (en) 1978-10-06 1978-10-06 Driver for brushless dc motor

Publications (1)

Publication Number Publication Date
JPS5549964A true JPS5549964A (en) 1980-04-11

Family

ID=14841064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12264478A Pending JPS5549964A (en) 1978-10-06 1978-10-06 Driver for brushless dc motor

Country Status (1)

Country Link
JP (1) JPS5549964A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02238903A (en) * 1989-03-13 1990-09-21 Tiger Mach Seisakusho:Kk Manufacture of composite concrete block and its device
US5557550A (en) * 1994-03-11 1996-09-17 Seagate Technology, Inc. Junction temperature status sensing and reduction for integrated power devices, such as a head positioning system in a magnetic disc drive
KR100425012B1 (en) * 2001-06-08 2004-03-27 국방과학연구소 Apparatus for position detection of rotor for bldcm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121112A (en) * 1974-08-14 1976-02-20 Hitachi Ltd Burashiresumootano ichikenshutsusochi
JPS5192008A (en) * 1975-02-10 1976-08-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121112A (en) * 1974-08-14 1976-02-20 Hitachi Ltd Burashiresumootano ichikenshutsusochi
JPS5192008A (en) * 1975-02-10 1976-08-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02238903A (en) * 1989-03-13 1990-09-21 Tiger Mach Seisakusho:Kk Manufacture of composite concrete block and its device
US5557550A (en) * 1994-03-11 1996-09-17 Seagate Technology, Inc. Junction temperature status sensing and reduction for integrated power devices, such as a head positioning system in a magnetic disc drive
KR100425012B1 (en) * 2001-06-08 2004-03-27 국방과학연구소 Apparatus for position detection of rotor for bldcm

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