AU5998200A - Magnet assembly - Google Patents

Magnet assembly

Info

Publication number
AU5998200A
AU5998200A AU59982/00A AU5998200A AU5998200A AU 5998200 A AU5998200 A AU 5998200A AU 59982/00 A AU59982/00 A AU 59982/00A AU 5998200 A AU5998200 A AU 5998200A AU 5998200 A AU5998200 A AU 5998200A
Authority
AU
Australia
Prior art keywords
magnet assembly
magnet
assembly
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.)
Abandoned
Application number
AU59982/00A
Other languages
English (en)
Inventor
Graham Bank
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.)
NVF Tech Ltd
Original Assignee
New Transducers 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 New Transducers Ltd filed Critical New Transducers Ltd
Publication of AU5998200A publication Critical patent/AU5998200A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/021—Reduction of eddy currents in the magnetic circuit of electrodynamic loudspeaker transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
AU59982/00A 1999-07-20 2000-07-19 Magnet assembly Abandoned AU5998200A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9916926.0A GB9916926D0 (en) 1999-07-20 1999-07-20 Magnet assembly
GB9916926 1999-07-20
PCT/GB2000/002706 WO2001006523A2 (en) 1999-07-20 2000-07-19 Magnet assembly

Publications (1)

Publication Number Publication Date
AU5998200A true AU5998200A (en) 2001-02-05

Family

ID=10857525

Family Applications (1)

Application Number Title Priority Date Filing Date
AU59982/00A Abandoned AU5998200A (en) 1999-07-20 2000-07-19 Magnet assembly

Country Status (6)

Country Link
EP (1) EP1205088A2 (de)
JP (1) JP2003505959A (de)
AU (1) AU5998200A (de)
GB (1) GB9916926D0 (de)
TW (1) TW483008B (de)
WO (1) WO2001006523A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836000B1 (fr) 2002-02-13 2004-05-28 Harman Internat Moteur electrodynamique a bobine mobile notamment pour haut-parleur, haut-parleur et piece polaire adaptee
JP5449002B2 (ja) * 2010-04-21 2014-03-19 株式会社オーディオテクニカ 音響用動電型変換器
GB2527533B (en) * 2014-06-24 2016-07-13 Amina Tech Ltd Moving coil drive unit and audio drivers incorporating the same
GB2622042A (en) * 2022-08-31 2024-03-06 Tethr Ltd Improved linear actuator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632904A (en) * 1970-03-24 1972-01-04 Paul Mauz Moving coil loudspeaker with eddy current suppression
US3783311A (en) * 1970-12-19 1974-01-01 Coral Audio Corp Magnetic device for use in acoustic apparatus
JPS5235294B2 (de) * 1971-12-17 1977-09-08
JPS5234212B2 (de) * 1971-12-17 1977-09-02
JPS4868217A (de) * 1971-12-17 1973-09-18

Also Published As

Publication number Publication date
JP2003505959A (ja) 2003-02-12
GB9916926D0 (en) 1999-09-22
TW483008B (en) 2002-04-11
WO2001006523A2 (en) 2001-01-25
EP1205088A2 (de) 2002-05-15
WO2001006523A3 (en) 2001-07-19

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase