NL7908447A - Magneetsysteem voor een electroakoestische omzetter. - Google Patents

Magneetsysteem voor een electroakoestische omzetter. Download PDF

Info

Publication number
NL7908447A
NL7908447A NL7908447A NL7908447A NL7908447A NL 7908447 A NL7908447 A NL 7908447A NL 7908447 A NL7908447 A NL 7908447A NL 7908447 A NL7908447 A NL 7908447A NL 7908447 A NL7908447 A NL 7908447A
Authority
NL
Netherlands
Prior art keywords
magnetic
membrane
location
auxiliary
magnetization
Prior art date
Application number
NL7908447A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7908447A priority Critical patent/NL7908447A/nl
Priority to US06/200,668 priority patent/US4527017A/en
Priority to EP80201043A priority patent/EP0029266A1/en
Priority to CA000364554A priority patent/CA1180101A/en
Priority to DK490080A priority patent/DK490080A/da
Priority to AU64473/80A priority patent/AU538853B2/en
Priority to ES496947A priority patent/ES496947A0/es
Priority to JP16271680A priority patent/JPS5685994A/ja
Publication of NL7908447A publication Critical patent/NL7908447A/nl

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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane
    • 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
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL7908447A 1979-11-20 1979-11-20 Magneetsysteem voor een electroakoestische omzetter. NL7908447A (nl)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL7908447A NL7908447A (nl) 1979-11-20 1979-11-20 Magneetsysteem voor een electroakoestische omzetter.
US06/200,668 US4527017A (en) 1979-11-20 1980-10-27 Magnet system for an electroacoustic transducer
EP80201043A EP0029266A1 (en) 1979-11-20 1980-11-04 Magnet system for an electroacoustic transducer
CA000364554A CA1180101A (en) 1979-11-20 1980-11-13 Magnet system for an electroacoustic transducer
DK490080A DK490080A (da) 1979-11-20 1980-11-17 Magnetsystem til en elektroakustisk transor
AU64473/80A AU538853B2 (en) 1979-11-20 1980-11-18 Magnet system for electroacoustic transducer
ES496947A ES496947A0 (es) 1979-11-20 1980-11-18 Un transductor electroacustico
JP16271680A JPS5685994A (en) 1979-11-20 1980-11-20 Electroacoustic transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7908447 1979-11-20
NL7908447A NL7908447A (nl) 1979-11-20 1979-11-20 Magneetsysteem voor een electroakoestische omzetter.

Publications (1)

Publication Number Publication Date
NL7908447A true NL7908447A (nl) 1981-06-16

Family

ID=19834209

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7908447A NL7908447A (nl) 1979-11-20 1979-11-20 Magneetsysteem voor een electroakoestische omzetter.

Country Status (8)

Country Link
US (1) US4527017A (da)
EP (1) EP0029266A1 (da)
JP (1) JPS5685994A (da)
AU (1) AU538853B2 (da)
CA (1) CA1180101A (da)
DK (1) DK490080A (da)
ES (1) ES496947A0 (da)
NL (1) NL7908447A (da)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000460A1 (en) * 1982-07-19 1984-02-02 Anthony Bernard Clarke Electromagnetic-acoustic transducer
US4550228A (en) * 1983-02-22 1985-10-29 Apogee Acoustics, Inc. Ribbon speaker system
ATE77879T1 (de) * 1985-04-17 1992-07-15 Geoquip Security Systems Ltd Vibrationsempfindlicher transduktor.
CA1284837C (en) * 1987-06-18 1991-06-11 Highwood Audio Inc. Audio transducer
US6154557A (en) * 1998-05-21 2000-11-28 Sonigistix Corporation Acoustic transducer with selective driving force distribution
WO2001061820A1 (en) * 2000-02-17 2001-08-23 Powerline Ges Pty Ltd Decentralised energy network system
AU2002243627A1 (en) * 2001-01-22 2002-08-19 American Technology Corporation Improved single-ended planar-magnetic speaker
US6934402B2 (en) * 2001-01-26 2005-08-23 American Technology Corporation Planar-magnetic speakers with secondary magnetic structure
US7146019B2 (en) * 2002-09-05 2006-12-05 Igor Levitsky Planar ribbon electro-acoustic transducer with high SPL capability and adjustable dipole/monopole low frequency radiation
JP2008118217A (ja) * 2006-10-31 2008-05-22 Sanyo Electric Co Ltd 電気音響変換装置
JP4845677B2 (ja) * 2006-10-31 2011-12-28 三洋電機株式会社 電気音響変換装置
US9197965B2 (en) * 2013-03-15 2015-11-24 James J. Croft, III Planar-magnetic transducer with improved electro-magnetic circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB775250A (en) * 1954-08-18 1957-05-22 Tesla Np A magnetic system with closed magnetic circuit
NL236904A (da) * 1958-03-07
AT239344B (de) * 1963-03-13 1965-03-25 Akg Akustische Kino Geraete Elektrodynamischer Kopfhörer
NL6700284A (da) * 1967-01-07 1968-07-08
JPS5235294B2 (da) * 1971-12-17 1977-09-08
JPS5237419A (en) * 1975-09-19 1977-03-23 Mitsubishi Electric Corp Whole device dynamic speaker
JPS5238915A (en) * 1975-09-22 1977-03-25 Mitsubishi Electric Corp Electric sound transducer

Also Published As

Publication number Publication date
JPS5685994A (en) 1981-07-13
AU538853B2 (en) 1984-08-30
EP0029266A1 (en) 1981-05-27
AU6447380A (en) 1982-05-27
CA1180101A (en) 1984-12-27
US4527017A (en) 1985-07-02
ES8201799A1 (es) 1981-12-16
ES496947A0 (es) 1981-12-16
DK490080A (da) 1981-05-21

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed