JPS6474055A - Transistor motor - Google Patents

Transistor motor

Info

Publication number
JPS6474055A
JPS6474055A JP22695887A JP22695887A JPS6474055A JP S6474055 A JPS6474055 A JP S6474055A JP 22695887 A JP22695887 A JP 22695887A JP 22695887 A JP22695887 A JP 22695887A JP S6474055 A JPS6474055 A JP S6474055A
Authority
JP
Japan
Prior art keywords
magnet
rotor
index
poles
circumferential face
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
JP22695887A
Other languages
Japanese (ja)
Inventor
Shuhei Omoto
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 TEC Corp
Original Assignee
Tokyo 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP22695887A priority Critical patent/JPS6474055A/en
Publication of JPS6474055A publication Critical patent/JPS6474055A/en
Pending legal-status Critical Current

Links

Landscapes

  • Brushless Motors (AREA)

Abstract

PURPOSE:To reduce cost, by employing a magnet having low magnetic force as an index magnet. CONSTITUTION:An index magnet 14 is secured to the circumferential face of a rotor 5 of a brushless motor to be driven through transistor rectification, and a Hall element 11 is arranged near the circumferential face of the rotor 5. The magnet 13 is magnetized into three poles (N, S, N poles) circumferentially on the rotor 5. The magnet 13 is formed with a plastic magnet having flux density of 500-600 Gauss. Consequently, the width of shaped index pulse fluctuates scarcely upon fluctuation of threshold voltage due to external temperature variation or source voltage variation when the threshold voltage is set to the base side voltage of the index pulse.
JP22695887A 1987-09-10 1987-09-10 Transistor motor Pending JPS6474055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22695887A JPS6474055A (en) 1987-09-10 1987-09-10 Transistor motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22695887A JPS6474055A (en) 1987-09-10 1987-09-10 Transistor motor

Publications (1)

Publication Number Publication Date
JPS6474055A true JPS6474055A (en) 1989-03-20

Family

ID=16853286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22695887A Pending JPS6474055A (en) 1987-09-10 1987-09-10 Transistor motor

Country Status (1)

Country Link
JP (1) JPS6474055A (en)

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