FR1171263A - Circuit magnétique - Google Patents

Circuit magnétique

Info

Publication number
FR1171263A
FR1171263A FR1171263DA FR1171263A FR 1171263 A FR1171263 A FR 1171263A FR 1171263D A FR1171263D A FR 1171263DA FR 1171263 A FR1171263 A FR 1171263A
Authority
FR
France
Prior art keywords
magnetic circuit
magnetic
circuit
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.)
Expired
Application number
Other languages
English (en)
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1171263A publication Critical patent/FR1171263A/fr
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0289—Transducers, loudspeakers, moving coil arrangements
    • 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)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Hard Magnetic Materials (AREA)
FR1171263D 1956-04-18 1957-04-16 Circuit magnétique Expired FR1171263A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE860439X 1956-04-18

Publications (1)

Publication Number Publication Date
FR1171263A true FR1171263A (fr) 1959-01-23

Family

ID=6791821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1171263D Expired FR1171263A (fr) 1956-04-18 1957-04-16 Circuit magnétique

Country Status (4)

Country Link
US (1) US2895092A (enrdf_load_stackoverflow)
BE (1) BE556726A (enrdf_load_stackoverflow)
FR (1) FR1171263A (enrdf_load_stackoverflow)
GB (1) GB860439A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130517B (de) * 1959-12-22 1962-05-30 Baermann Max Magnetanordnung fuer Grosswinkel-Drehspulmessinstrumente

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134057A (en) * 1960-07-11 1964-05-19 Sumitomo Metal Ind Magnetic circuit for the deflection of flux leakage
US3120631A (en) * 1960-11-14 1964-02-04 Exxon Research Engineering Co Electromagnet for supporting and dropping weights
US3147350A (en) * 1961-12-18 1964-09-01 Lockheed Aircraft Corp Magnetically operated reed switch
US3198254A (en) * 1962-05-08 1965-08-03 Baker Oil Tools Inc Method and apparatus for completing wells
US3454913A (en) * 1966-11-14 1969-07-08 Eriez Mfg Co Permanent magnetic pulley
US3478289A (en) * 1968-02-12 1969-11-11 Robert A Parnell Permanent magnet assembly for a loudspeaker assembly
US3737822A (en) * 1970-06-10 1973-06-05 Magnetics Int Inc Magnetic separator
US4321652A (en) * 1979-04-30 1982-03-23 Minnesota Mining And Manufacturing Co. Low voltage transformer relay
US4363639A (en) * 1981-03-09 1982-12-14 Iowa State University Research Foundation, Inc. Gas trap for removing atmospheric pollutants and method of operation
US4549155A (en) * 1982-09-20 1985-10-22 The United States Of America As Represented By The United States Department Of Energy Permanent magnet multipole with adjustable strength
JPS59139794A (ja) * 1983-01-31 1984-08-10 Ibuki Kogyo Kk 漏洩磁場を打消したホ−ンスピ−カ−
US4647887A (en) * 1984-12-24 1987-03-03 The United States Of America As Represented By The Secretary Of The Army Lightweight cladding for magnetic circuits
US5142260A (en) * 1991-03-08 1992-08-25 Harman International Industries, Incorporated Transducer motor assembly
US5380430A (en) * 1992-07-24 1995-01-10 Overton; James M. Magnetizing apparatus for treatment of fluids
US5409236A (en) * 1993-12-23 1995-04-25 Therrien; Joel M. Magnetic game or puzzle and method for making same
JP4159184B2 (ja) * 1999-06-25 2008-10-01 株式会社デルタツーリング 磁気ばね
US6573817B2 (en) 2001-03-30 2003-06-03 Sti Optronics, Inc. Variable-strength multipole beamline magnet
GB2440768A (en) * 2006-08-08 2008-02-13 Selex Sensors & Airborne Sys Magnet assembly for moving coil actuator
US7705702B2 (en) 2006-08-08 2010-04-27 Selex Galileo Ltd Actuator
JP4845677B2 (ja) * 2006-10-31 2011-12-28 三洋電機株式会社 電気音響変換装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398653A (en) * 1942-10-15 1946-04-16 Gen Electric Magnetic structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130517B (de) * 1959-12-22 1962-05-30 Baermann Max Magnetanordnung fuer Grosswinkel-Drehspulmessinstrumente

Also Published As

Publication number Publication date
US2895092A (en) 1959-07-14
GB860439A (en) 1961-02-08
BE556726A (enrdf_load_stackoverflow)

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