IT1095115B - Trasduttore dinamico con una bobina di oscillazione in un interferro riempito con un fluido magnetico - Google Patents

Trasduttore dinamico con una bobina di oscillazione in un interferro riempito con un fluido magnetico

Info

Publication number
IT1095115B
IT1095115B IT22093/78A IT2209378A IT1095115B IT 1095115 B IT1095115 B IT 1095115B IT 22093/78 A IT22093/78 A IT 22093/78A IT 2209378 A IT2209378 A IT 2209378A IT 1095115 B IT1095115 B IT 1095115B
Authority
IT
Italy
Prior art keywords
interfer
filled
magnetic fluid
oscillation coil
dynamic transducer
Prior art date
Application number
IT22093/78A
Other languages
English (en)
Other versions
IT7822093A0 (it
Original Assignee
Licentia 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 Gmbh filed Critical Licentia Gmbh
Publication of IT7822093A0 publication Critical patent/IT7822093A0/it
Application granted granted Critical
Publication of IT1095115B publication Critical patent/IT1095115B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
IT22093/78A 1977-04-09 1978-04-07 Trasduttore dinamico con una bobina di oscillazione in un interferro riempito con un fluido magnetico IT1095115B (it)

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 (2)

Publication Number Publication Date
IT7822093A0 IT7822093A0 (it) 1978-04-07
IT1095115B true IT1095115B (it) 1985-08-10

Family

ID=6006096

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22093/78A IT1095115B (it) 1977-04-09 1978-04-07 Trasduttore dinamico con una bobina di oscillazione in un interferro riempito con un fluido magnetico

Country Status (6)

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

Families Citing this family (10)

* 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
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 (it) * 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
AU2013399148B2 (en) 2013-08-26 2017-03-23 Halliburton Energy Services, Inc. Variable reluctance transducers
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

Also Published As

Publication number Publication date
SE421099B (sv) 1981-11-23
FR2386954B1 (it) 1984-07-27
DE2716063A1 (de) 1978-10-12
DE2716063B2 (de) 1979-04-19
GB1599506A (en) 1981-10-07
FR2386954A1 (fr) 1978-11-03
SE7803728L (sv) 1978-10-10
IT7822093A0 (it) 1978-04-07
JPS53146614A (en) 1978-12-20

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