CH376149A - Magnetsystem mit geringer Streuung, insbesondere für Lautsprecher, Mikrophone und dergleichen - Google Patents

Magnetsystem mit geringer Streuung, insbesondere für Lautsprecher, Mikrophone und dergleichen

Info

Publication number
CH376149A
CH376149A CH7929459A CH7929459A CH376149A CH 376149 A CH376149 A CH 376149A CH 7929459 A CH7929459 A CH 7929459A CH 7929459 A CH7929459 A CH 7929459A CH 376149 A CH376149 A CH 376149A
Authority
CH
Switzerland
Prior art keywords
loudspeakers
microphones
magnetic system
low scatter
scatter
Prior art date
Application number
CH7929459A
Other languages
English (en)
Inventor
Hofman Wytze
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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Publication of CH376149A publication Critical patent/CH376149A/de

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)
CH7929459A 1958-10-15 1959-10-12 Magnetsystem mit geringer Streuung, insbesondere für Lautsprecher, Mikrophone und dergleichen CH376149A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL232314 1958-10-15

Publications (1)

Publication Number Publication Date
CH376149A true CH376149A (de) 1964-03-31

Family

ID=19751389

Family Applications (1)

Application Number Title Priority Date Filing Date
CH7929459A CH376149A (de) 1958-10-15 1959-10-12 Magnetsystem mit geringer Streuung, insbesondere für Lautsprecher, Mikrophone und dergleichen

Country Status (7)

Country Link
US (1) US3067366A (de)
CH (1) CH376149A (de)
DE (1) DE1176768B (de)
ES (1) ES252608A1 (de)
FR (1) FR1247967A (de)
GB (1) GB927545A (de)
NL (2) NL111475C (de)

Families Citing this family (25)

* 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
US3387707A (en) * 1965-06-14 1968-06-11 Westinghouse Electric Corp Permanent magnet assembly
US3478289A (en) * 1968-02-12 1969-11-11 Robert A Parnell Permanent magnet assembly for a loudspeaker assembly
DE1907969A1 (de) * 1968-03-01 1969-09-25 Philips Nv Magnetsystem mit einem ringfoermigen permanenten Hauptmagnet mit einer Weicheisenober- und -unterplatte und einem Kern mit Hilfsmagnet
FR2160353B1 (de) * 1971-11-15 1976-06-11 Knorr Bremse Gmbh
GB1360080A (en) * 1971-12-22 1974-07-17 Melnikov J A Magnetic system
US4323843A (en) * 1978-12-06 1982-04-06 Batham Ian N Magnetic contamination detector
DE3339720A1 (de) * 1983-11-03 1985-05-15 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn Streuarmes topfmagnetsystem fuer magnet-dynamische lautsprecher bzw. akustische wandler
US5142260A (en) * 1991-03-08 1992-08-25 Harman International Industries, Incorporated Transducer motor assembly
US5197104A (en) * 1991-04-18 1993-03-23 Josef Lakatos Electrodynamic loudspeaker with electromagnetic impedance sensor coil
GB9206014D0 (en) * 1992-03-19 1992-04-29 Oxford Instr Ltd Magnet assembly
JPH06233379A (ja) * 1993-02-02 1994-08-19 Kenwood Corp スピーカ
US5409236A (en) * 1993-12-23 1995-04-25 Therrien; Joel M. Magnetic game or puzzle and method for making same
US5802191A (en) * 1995-01-06 1998-09-01 Guenther; Godehard A. Loudspeakers, systems, and components thereof
US5883967A (en) * 1997-04-15 1999-03-16 Harman International Industries, Incorporated Slotted diaphragm loudspeaker
US5879549A (en) * 1997-09-13 1999-03-09 Caiozza; Joseph Filter cartridge magnetic attachment
US8588457B2 (en) 1999-08-13 2013-11-19 Dr. G Licensing, Llc Low cost motor design for rare-earth-magnet loudspeakers
AU1624700A (en) * 1998-11-13 2000-06-05 Godehard A. Guenther Low cost motor design for rare-earth-magnet loudspeakers
EP1247424B1 (de) 1999-08-13 2013-11-20 Dr. G Licensing, LLC Billiger breitbereichslautsprecher und system
US6611606B2 (en) * 2000-06-27 2003-08-26 Godehard A. Guenther Compact high performance speaker
WO2002001914A1 (en) * 2000-06-27 2002-01-03 Guenther Godehard A Low profile speaker and system
US6993147B2 (en) * 2000-08-14 2006-01-31 Guenther Godehard A Low cost broad range loudspeaker and system
US6835048B2 (en) * 2002-12-18 2004-12-28 Varian, Inc. Ion pump having secondary magnetic field
US7653208B2 (en) * 2004-09-09 2010-01-26 Guenther Godehard A Loudspeakers and systems
US8189840B2 (en) 2007-05-23 2012-05-29 Soundmatters International, Inc. Loudspeaker and electronic devices incorporating same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141595A (en) * 1937-01-13 1938-12-27 Cinaudagraph Corp Magnet structure
BE440964A (de) * 1939-10-05
DE1011466B (de) * 1955-06-18 1957-07-04 Philips Patentverwaltung Magnetsystem fuer elektroakustische Wandler
DE1742108U (de) * 1956-06-14 1957-03-28 Deutsche Edelstahlwerke Ag Dauermagnetsystem mit zentralem eisenkern, insbesondere fuer lautsprecher und tauchspulmikrofone.
US2923783A (en) * 1957-06-17 1960-02-02 Stanley F White Electro-acoustical transducer
US2915681A (en) * 1957-11-20 1959-12-01 Indiana Steel Products Co Magnet assemblies

Also Published As

Publication number Publication date
FR1247967A (fr) 1960-12-09
DE1176768B (de) 1964-08-27
NL232314A (de)
NL111475C (de)
ES252608A1 (es) 1959-12-01
US3067366A (en) 1962-12-04
GB927545A (en) 1963-05-29

Similar Documents

Publication Publication Date Title
CH376149A (de) Magnetsystem mit geringer Streuung, insbesondere für Lautsprecher, Mikrophone und dergleichen
CH389032A (de) Nachrichtenübertragungssystem
FR1169701A (fr) Dispositif électromagnétique, notamment pour microphones et écouteurs
CA604197A (en) Sound deadener and absorber
CA656059A (en) Magnetic earring construction
FR1204083A (fr) Suspension électro-magnétique
CH387104A (de) Magnetsystem, besonders für Lautsprecher, Mikrophone und dergleichen
CA558407A (en) Electro-magnetic solenoids and actuators
CA560230A (en) Piggeries and drainage systems therefor
FR1200445A (fr) Discothèque
CA564119A (en) Stockings and the like and their manufacture
FR73164E (fr) Dispositif électromagnétique, notamment pour microphones et écouteurs
CA558103A (en) Naphthalene derivatives and the manufacture thereof
CA554011A (en) Electromagnet construction
CA564009A (en) Sound-absorbing systems
AU288046B2 (en) Benzoyl - pyridine oximino - ethers and - esters and methods for their manufacture
AU236810B2 (en) Improvements in or relating to relating to magnet systems having littele stray, particularly for use in loudspeakers, microphones and the lile
CA597165A (en) Substituted tetrazolines and methods for obtaining the same
CA670078A (en) Magnetic elements and methods for making the same
FR1193508A (fr) Embrayage, en particulier du type électromagnétique, à montage en tandem
CA626185A (en) Magnetic particles coated with an antimonide
ES67239Y (es) Colgante para llaveros y similares
CA590321A (en) Cheese manufacture and the like
CA598180A (en) Particulate gelatin
CA561751A (en) Processing machinery for electroplating and the like