DK490080A - Magnetsystem til en elektroakustisk transor - Google Patents

Magnetsystem til en elektroakustisk transor

Info

Publication number: DK490080A
Authority: DK; Denmark
Prior art keywords: electroacustic; transor; magnetic system; magnetic; electroacustic transor
Prior art date: 1979-11-20

Application number

DK490080A

Other languages

English (en)

Inventor

W Kopinga

H Mimmel

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.)

1979-11-20

Filing date

1980-11-17

Publication date

1981-05-21

1980-11-17 Application filed by Philips Nv filed Critical Philips Nv

1981-05-21 Publication of DK490080A publication Critical patent/DK490080A/da

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)

DK490080A 1979-11-20 1980-11-17 Magnetsystem til en elektroakustisk transor DK490080A (da)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
DK490080A true DK490080A (da)	1981-05-21

Family

ID=19834209

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK490080A DK490080A (da)	1979-11-20	1980-11-17	Magnetsystem til en elektroakustisk transor

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)	ES8201799A1 (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
EP0113732A4 (en) *	1982-07-19	1986-02-13	Anthony Bernard Clarke	ELECTROMAGNETIC-ACOUSTIC TRANSDUCER.
US4550228A (en) *	1983-02-22	1985-10-29	Apogee Acoustics, Inc.	Ribbon speaker system
EP0206458B1 (en) *	1985-04-17	1992-07-01	Geoquip Security Systems Limited	Vibration-sensitive transducer
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
WO2001061838A1 (en) *	2000-02-17	2001-08-23	Powerline Ges Pty Ltd	An energy generating and supply system
WO2002063922A2 (en) *	2001-01-22	2002-08-15	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
JP4845677B2 (ja) *	2006-10-31	2011-12-28	三洋電機株式会社	電気音響変換装置
JP2008118217A (ja) *	2006-10-31	2008-05-22	Sanyo Electric Co Ltd	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

1979
- 1979-11-20 NL NL7908447A patent/NL7908447A/nl not_active Application Discontinuation
1980
- 1980-10-27 US US06/200,668 patent/US4527017A/en not_active Expired - Lifetime
- 1980-11-04 EP EP80201043A patent/EP0029266A1/en not_active Ceased
- 1980-11-13 CA CA000364554A patent/CA1180101A/en not_active Expired
- 1980-11-17 DK DK490080A patent/DK490080A/da not_active Application Discontinuation
- 1980-11-18 ES ES496947A patent/ES8201799A1/es not_active Expired
- 1980-11-18 AU AU64473/80A patent/AU538853B2/en not_active Ceased
- 1980-11-20 JP JP16271680A patent/JPS5685994A/ja active Pending

Also Published As

Publication number	Publication date
AU538853B2 (en)	1984-08-30
CA1180101A (en)	1984-12-27
ES496947A0 (es)	1981-12-16
ES8201799A1 (es)	1981-12-16
EP0029266A1 (en)	1981-05-27
AU6447380A (en)	1982-05-27
NL7908447A (nl)	1981-06-16
US4527017A (en)	1985-07-02
JPS5685994A (en)	1981-07-13

Publication	Publication Date	Title
BR7806712A (pt)	1979-05-15	Sistema de gravacao magnetica
NO148428C (no)	1983-10-05	Mikroboelge-landingssystem
BE882201A (nl)	1980-07-01	Radarsysteem
DK72880A (da)	1980-08-22	Radaranlaeg
IT8023714A0 (it)	1980-07-25	Impianto multicompressori.
PT72557A (de)	1981-03-01	Polarisiertes magnetsystem
DK490080A (da)	1981-05-21	Magnetsystem til en elektroakustisk transor
IT1130863B (it)	1986-06-18	Bobina per nastro
FI801371A (fi)	1980-11-05	Logiskt system foer styrning av en multiplex-konnektorenhet i en tidsindelad omkopplingscentral
FI802659A (fi)	1981-03-01	System foer behandling av televisionssignaler
BR8002716A (pt)	1980-12-16	Sistema telefonico
SE7904987L (sv)	1980-09-30	Hallare for vermeror
BR8000718A (pt)	1980-10-21	Sistema de amortecimento magnetico
NL189929C (nl)	1993-09-01	Ringmagneetsysteem.
DE3067849D1 (de)	1984-06-20	Solenoid torquer system
DK328380A (da)	1981-02-01	Radiosystem
BR8005682A (pt)	1981-03-17	Sistema antitrava
SE8003894L (sv)	1980-11-26	Fotoglor for segelbredor
DK430480A (da)	1981-04-14	Sibund isaer til centrifuger
FI790367A (fi)	1980-08-06	System foer uppvaermning av bostadsvaoningshus
DK143992C (da)	1982-04-19	Nakkelaas til sobindsel
AT361218B (de)	1981-02-25	Plattenaufteilanlage
DD134584A1 (de)	1979-03-07	Magnetisches ablenksystem
DK254579A (da)	1980-12-19	Inventar-byggesystem
FI793843A (fi)	1981-06-11	Expansions-kombinationsventil foer slutet system

Legal Events

Date	Code	Title	Description
1985-04-29	ATS	Application withdrawn