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JPS5517204A - Brushless dc motor - Google Patents

Brushless dc motor

Info

Publication number
JPS5517204A
JPS5517204A JP8710478A JP8710478A JPS5517204A JP S5517204 A JPS5517204 A JP S5517204A JP 8710478 A JP8710478 A JP 8710478A JP 8710478 A JP8710478 A JP 8710478A JP S5517204 A JPS5517204 A JP S5517204A
Authority
JP
Japan
Prior art keywords
transistors
switch
energized
magnetic field
diodes
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
JP8710478A
Other languages
Japanese (ja)
Inventor
Itsuki Ban
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8710478A priority Critical patent/JPS5517204A/en
Publication of JPS5517204A publication Critical patent/JPS5517204A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To switch and control rotational direction of a brushless DC motor by utilizing a semiconductor switch. CONSTITUTION:When a rotational direction switching switch 26 is connected with a point 26a, transistors 7 and 8 are connected with armature coils 2a to 2c in series. Then transistors 10, 12, and 14 are energized if hole elements 16 to 18 are located in the S pole magnetic field, thus causing voltage drop in resistores 10a, 12a, and 14a, and energizing transistors 7 to 9 through diodes 20, 22, and 24. As a result, the armature coils 2a to 2c are energized with different phase of 120 degrees each other, and rotational torque is generated, thus rotating the magnetic field 1 in an arrowed direction. When the switch 26 is connected with a point 26b, emitter side of the transistors 10 to 14a are deenergized, and the emitter side of the transistors 11 to 15 are connected with a forward voltage terminal 5a. As a result, only if each hole element is located in the N pole magnetic field, transistors 7 to 9 are energized through the diodes 21 to 25, thus generating rotational torque in the opposite direction.
JP8710478A 1978-07-19 1978-07-19 Brushless dc motor Pending JPS5517204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8710478A JPS5517204A (en) 1978-07-19 1978-07-19 Brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8710478A JPS5517204A (en) 1978-07-19 1978-07-19 Brushless dc motor

Publications (1)

Publication Number Publication Date
JPS5517204A true JPS5517204A (en) 1980-02-06

Family

ID=13905628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8710478A Pending JPS5517204A (en) 1978-07-19 1978-07-19 Brushless dc motor

Country Status (1)

Country Link
JP (1) JPS5517204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167804A (en) * 1982-03-12 1983-10-04 ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン Blade damper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167804A (en) * 1982-03-12 1983-10-04 ユナイテツド・テクノロジ−ズ・コ−ポレイシヨン Blade damper
JPH0477121B2 (en) * 1982-03-12 1992-12-07 Yunaitetsudo Tekunorojiizu Corp

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