JPS53146614A - Dynamic transducer with vibration coil in gap filled with magnetic fliquid - Google Patents

Dynamic transducer with vibration coil in gap filled with magnetic fliquid

Info

Publication number
JPS53146614A
JPS53146614A JP4111278A JP4111278A JPS53146614A JP S53146614 A JPS53146614 A JP S53146614A JP 4111278 A JP4111278 A JP 4111278A JP 4111278 A JP4111278 A JP 4111278A JP S53146614 A JPS53146614 A JP S53146614A
Authority
JP
Japan
Prior art keywords
fliquid
magnetic
gap filled
vibration coil
dynamic transducer
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
JP4111278A
Other languages
English (en)
Japanese (ja)
Inventor
Haintsu Teiire Kaaru
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of JPS53146614A publication Critical patent/JPS53146614A/ja
Pending 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
    • H04R9/027—Air gaps using a magnetic fluid

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
JP4111278A 1977-04-09 1978-04-07 Dynamic transducer with vibration coil in gap filled with magnetic fliquid Pending JPS53146614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2716063A DE2716063B2 (de) 1977-04-09 1977-04-09 Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt

Publications (1)

Publication Number Publication Date
JPS53146614A true JPS53146614A (en) 1978-12-20

Family

ID=6006096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4111278A Pending JPS53146614A (en) 1977-04-09 1978-04-07 Dynamic transducer with vibration coil in gap filled with magnetic fliquid

Country Status (6)

Country Link
JP (1) JPS53146614A (de)
DE (1) DE2716063B2 (de)
FR (1) FR2386954A1 (de)
GB (1) GB1599506A (de)
IT (1) IT1095115B (de)
SE (1) SE421099B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549097A (en) * 1978-10-05 1980-04-08 Pioneer Electronic Corp Speaker unit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900427B1 (de) * 1979-01-08 1979-08-02 Licentia Gmbh Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Fluessigkeit gefuellten Luftspalt
DE3028065A1 (de) * 1980-07-24 1982-02-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Dynamischer wandler mit mitteln zur verringerung des streufeldes fuer fernsehgeraete
JPH0450718Y2 (de) * 1986-02-28 1992-11-30
WO1998038834A1 (en) * 1997-02-28 1998-09-03 Koninklijke Philips Electronics N.V. Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer
US6804368B2 (en) * 2002-04-11 2004-10-12 Ferrotec Corporation Micro-speaker and method for assembling a micro-speaker
FR2892887B1 (fr) * 2005-11-03 2007-12-21 Bernard Richoux Transducteur electrodynamique a dome a suspension ferrofluide
FR2919978B1 (fr) * 2007-08-09 2011-04-29 Gilles Milot Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes
MX351734B (es) 2013-08-26 2017-10-26 Halliburton Energy Services Inc Transductores de reluctancia variable.
CN109561368B (zh) * 2017-09-26 2023-08-11 惠州迪芬尼声学科技股份有限公司 硬球顶高音扬声器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581015A (en) * 1966-12-28 1971-05-25 Aiwa Co Dynamic microphone
US4017694A (en) * 1976-02-18 1977-04-12 Essex Group, Inc. Method for making loudspeaker with magnetic fluid enveloping the voice coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549097A (en) * 1978-10-05 1980-04-08 Pioneer Electronic Corp Speaker unit

Also Published As

Publication number Publication date
IT1095115B (it) 1985-08-10
DE2716063B2 (de) 1979-04-19
FR2386954A1 (fr) 1978-11-03
FR2386954B1 (de) 1984-07-27
SE421099B (sv) 1981-11-23
IT7822093A0 (it) 1978-04-07
GB1599506A (en) 1981-10-07
DE2716063A1 (de) 1978-10-12
SE7803728L (sv) 1978-10-10

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