JP2002218790A - 回路過負荷保護装置 - Google Patents

回路過負荷保護装置

Info

Publication number
JP2002218790A
JP2002218790A JP2001323270A JP2001323270A JP2002218790A JP 2002218790 A JP2002218790 A JP 2002218790A JP 2001323270 A JP2001323270 A JP 2001323270A JP 2001323270 A JP2001323270 A JP 2001323270A JP 2002218790 A JP2002218790 A JP 2002218790A
Authority
JP
Japan
Prior art keywords
actuator
current
drive circuit
limiting device
resistance
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
JP2001323270A
Other languages
English (en)
Japanese (ja)
Other versions
JP2002218790A5 (enExample
Inventor
Michael C Fischer
マイケル・シー・フィッシャー
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of JP2002218790A publication Critical patent/JP2002218790A/ja
Publication of JP2002218790A5 publication Critical patent/JP2002218790A5/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/026—Current limitation using PTC resistors, i.e. resistors with a large positive temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Control Of Linear Motors (AREA)
  • Optical Recording Or Reproduction (AREA)
JP2001323270A 2000-10-31 2001-10-22 回路過負荷保護装置 Pending JP2002218790A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69956300A 2000-10-31 2000-10-31
US09/699563 2000-10-31

Publications (2)

Publication Number Publication Date
JP2002218790A true JP2002218790A (ja) 2002-08-02
JP2002218790A5 JP2002218790A5 (enExample) 2005-06-23

Family

ID=24809882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001323270A Pending JP2002218790A (ja) 2000-10-31 2001-10-22 回路過負荷保護装置

Country Status (4)

Country Link
EP (1) EP1202423A3 (enExample)
JP (1) JP2002218790A (enExample)
KR (1) KR100786457B1 (enExample)
CN (1) CN1351400A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1581950A1 (en) 2002-12-30 2005-10-05 Koninklijke Philips Electronics N.V. Method for driving an actuator, actuator drive, and apparatus comprising an actuator
DE102006045043A1 (de) * 2006-09-25 2008-04-03 Siemens Ag Formgedächtniselement mit Mitteln zur Einschaltstrombegrenzung, Verfahren zur Einschaltstrombegrenzung an einem Formgedächtniselement sowie Verwendung eines Formgedächtniselementes mit Einschaltstrombegrenzung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2731673B2 (ja) * 1992-07-03 1998-03-25 富士通株式会社 ディスク装置
US5471035A (en) * 1993-10-22 1995-11-28 Eaton Corporation Sandwich construction for current limiting positive temperature coefficient protective device
JPH11144362A (ja) * 1997-11-07 1999-05-28 Teac Corp 情報記録再生装置
JP2000251272A (ja) * 1999-03-03 2000-09-14 Matsushita Electric Ind Co Ltd 光ディスク装置

Also Published As

Publication number Publication date
KR100786457B1 (ko) 2007-12-17
CN1351400A (zh) 2002-05-29
EP1202423A2 (en) 2002-05-02
EP1202423A3 (en) 2003-03-26
KR20020033558A (ko) 2002-05-07

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