IE37725B1 - Transducer device - Google Patents

Transducer device

Info

Publication number
IE37725B1
IE37725B1 IE864/73A IE86473A IE37725B1 IE 37725 B1 IE37725 B1 IE 37725B1 IE 864/73 A IE864/73 A IE 864/73A IE 86473 A IE86473 A IE 86473A IE 37725 B1 IE37725 B1 IE 37725B1
Authority
IE
Ireland
Prior art keywords
transducer device
respect
permanent magnet
electrical coil
stationary
Prior art date
Application number
IE864/73A
Other versions
IE37725L (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE37725L publication Critical patent/IE37725L/en
Publication of IE37725B1 publication Critical patent/IE37725B1/en

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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

A transducer device such as a loudspeaker or microphone has the electrical coil stationary with respect to the acoustic diaphragm. The diaphragm is actuated by a movable permanent magnet which interacts with the field of the stationary electrical coil. The preferred permanent magnet is one having a high torque-to-weight ratio with respect to an external field. The cobalt-rare earth magnets are examples of such permanent magnets. [US3798391A]
IE864/73A 1972-06-22 1973-05-30 Transducer device IE37725B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26525072A 1972-06-22 1972-06-22

Publications (2)

Publication Number Publication Date
IE37725L IE37725L (en) 1973-12-22
IE37725B1 true IE37725B1 (en) 1977-09-28

Family

ID=23009664

Family Applications (1)

Application Number Title Priority Date Filing Date
IE864/73A IE37725B1 (en) 1972-06-22 1973-05-30 Transducer device

Country Status (16)

Country Link
US (1) US3798391A (en)
JP (2) JPS5013027A (en)
KR (1) KR780000424B1 (en)
BE (1) BE801293A (en)
CA (1) CA963571A (en)
CH (1) CH559993A5 (en)
DE (1) DE2326960C3 (en)
ES (1) ES416111A1 (en)
FR (1) FR2202420B1 (en)
GB (1) GB1426391A (en)
HK (1) HK49477A (en)
IE (1) IE37725B1 (en)
IT (1) IT989118B (en)
NL (1) NL7308542A (en)
SE (1) SE388103B (en)
SU (1) SU583783A3 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2507704C3 (en) * 1975-02-22 1980-07-24 Dr. Kuhn & Co Gmbh, 5000 Koeln Speech aid device for larynx surgery
JPS5723994Y2 (en) * 1976-12-03 1982-05-24
DE2810459C3 (en) * 1977-03-14 1986-11-13 Sergej Valentinovič Čeljabinsk Burundukov Electrodynamic converter of mechanical vibrations into electrical signals and vice versa, stereo and monophonic sound heads and electrodynamic microphone
JPS5664514A (en) * 1979-10-29 1981-06-01 Dx Antenna Co Ltd Filter
US4385210A (en) * 1980-09-19 1983-05-24 Electro-Magnetic Corporation Electro-acoustic planar transducer
DE3208678A1 (en) * 1982-03-10 1983-09-22 Siemens AG, 1000 Berlin und 8000 München TALKING APPARATUS
FR2549335B1 (en) * 1983-07-13 1985-10-31 Corselli Laurent MAGNETICALLY MODULATED SPEAKER
JPH0761193B2 (en) * 1991-07-23 1995-06-28 ボディソニック株式会社 Electric / mechanical vibration converter
US8144380B2 (en) * 2002-09-26 2012-03-27 Seiko Epson Corporation Drive mechanism
US8295536B2 (en) 2010-03-31 2012-10-23 Bose Corporation Moving magnet levered loudspeaker
US8295537B2 (en) 2010-03-31 2012-10-23 Bose Corporation Loudspeaker moment and torque balancing
CN103718567B (en) * 2011-07-21 2017-09-08 喜恩吉股份有限公司 Method from resonance type sounding loudspeaker is installed
US9055370B2 (en) 2012-08-31 2015-06-09 Bose Corporation Vibration-reducing passive radiators
JP5668233B1 (en) * 2014-03-26 2015-02-12 株式会社サウンドファン Universal speaker
TWI610576B (en) * 2016-08-15 2018-01-01 緯創資通股份有限公司 Loudspeaker
GB201619516D0 (en) * 2016-11-18 2017-01-04 Cooper Technologies Co Electroacoustic driver and related loudspeaker/sounder

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110153A (en) * 1934-10-19 1938-03-08 Philips Nv Magnetic system
US2492255A (en) * 1944-12-26 1949-12-27 John O Angehrn Sealed-coil type vibratory magnet loudspeaker
DE1037510B (en) * 1957-01-09 1958-08-28 Johann Distler K G Electromagnetic converter
US3076062A (en) * 1959-10-30 1963-01-29 Dyna Magnetic Devices Inc Hearing-aid sound transducer
US3501358A (en) * 1967-08-30 1970-03-17 Gen Electric Method of making permanent magnet material powders having superior magnetic characteristics
DE1762107A1 (en) * 1968-04-08 1970-04-30 Lothar Kuhnert Circular speaker
US3651283A (en) * 1968-12-18 1972-03-21 Audio Arts Inc Loudspeaker having elongated rectangular moving coil
US3625779A (en) * 1969-08-21 1971-12-07 Gen Electric Reduction-fusion process for the production of rare earth intermetallic compounds
US3655464A (en) * 1970-04-30 1972-04-11 Gen Electric Process of preparing a liquid sintered cobalt-rare earth intermetallic product
US3655463A (en) * 1970-04-30 1972-04-11 Gen Electric Sintered cobalt-rare earth intermetallic process using solid sintering additive
US3682715A (en) * 1970-08-24 1972-08-08 Gen Electric Sintered cobalt-rare earth intermetallic product including samarium and lanthanum and permanent magnets produced therefrom

Also Published As

Publication number Publication date
IT989118B (en) 1975-05-20
JPS5690099U (en) 1981-07-18
FR2202420A1 (en) 1974-05-03
KR780000424B1 (en) 1978-10-10
CH559993A5 (en) 1975-06-13
DE2326960B2 (en) 1980-10-02
CA963571A (en) 1975-02-25
DE2326960A1 (en) 1974-01-10
US3798391A (en) 1974-03-19
HK49477A (en) 1977-09-30
BE801293A (en) 1973-10-15
SE388103B (en) 1976-09-20
GB1426391A (en) 1976-02-25
ES416111A1 (en) 1976-06-16
JPS5013027A (en) 1975-02-10
JPS6019436Y2 (en) 1985-06-11
DE2326960C3 (en) 1981-05-14
NL7308542A (en) 1973-12-27
FR2202420B1 (en) 1980-04-18
SU583783A3 (en) 1977-12-05
IE37725L (en) 1973-12-22

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