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JPS5471604A - Turntable driving device - Google Patents

Turntable driving device

Info

Publication number
JPS5471604A
JPS5471604A JP13856377A JP13856377A JPS5471604A JP S5471604 A JPS5471604 A JP S5471604A JP 13856377 A JP13856377 A JP 13856377A JP 13856377 A JP13856377 A JP 13856377A JP S5471604 A JPS5471604 A JP S5471604A
Authority
JP
Japan
Prior art keywords
rotator
electromagnets
acts
always
distance
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
JP13856377A
Other languages
Japanese (ja)
Other versions
JPS5927172B2 (en
Inventor
Kazutoshi Miura
Shigeru Tanaka
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 JP52138563A priority Critical patent/JPS5927172B2/en
Publication of JPS5471604A publication Critical patent/JPS5471604A/en
Publication of JPS5927172B2 publication Critical patent/JPS5927172B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotational Drive Of Disk (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To obviate the occurrence of rumble noises by controlling the supply voltage to electromagnets and supporting afloat a rotator by having a specified gap length. CONSTITUTION:When transistors 23, 24, 25 are sequentially turned ON by the outputs of rotor position detectors 31, 32, 33, a rotor 6 is rotation-driven. when the electromagnets 4 and the thick-wall parts of a rotator 5 deviate by a distance (y), the restoring force Fyl acts between both. This restoring force increases in proportion to (y) within the range where the distance (y) does not become too large. Hence, the force returning to the center of an armature core 2 always powerfully acts upon the rotator 5, thus the rotator revolves always in the central position.
JP52138563A 1977-11-18 1977-11-18 Turntable drive device Expired JPS5927172B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52138563A JPS5927172B2 (en) 1977-11-18 1977-11-18 Turntable drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52138563A JPS5927172B2 (en) 1977-11-18 1977-11-18 Turntable drive device

Publications (2)

Publication Number Publication Date
JPS5471604A true JPS5471604A (en) 1979-06-08
JPS5927172B2 JPS5927172B2 (en) 1984-07-04

Family

ID=15225057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52138563A Expired JPS5927172B2 (en) 1977-11-18 1977-11-18 Turntable drive device

Country Status (1)

Country Link
JP (1) JPS5927172B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003339136A (en) * 2002-05-20 2003-11-28 Kumamoto Technology & Industry Foundation Annular type motor
JP2011024385A (en) * 2009-07-17 2011-02-03 Tokyo Univ Of Science Double rotor structure magnetic support motor and turntable mounted with the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003339136A (en) * 2002-05-20 2003-11-28 Kumamoto Technology & Industry Foundation Annular type motor
JP2011024385A (en) * 2009-07-17 2011-02-03 Tokyo Univ Of Science Double rotor structure magnetic support motor and turntable mounted with the same

Also Published As

Publication number Publication date
JPS5927172B2 (en) 1984-07-04

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