JPS5238915A - Electric sound transducer - Google Patents

Electric sound transducer

Info

Publication number
JPS5238915A
JPS5238915A JP50114587A JP11458775A JPS5238915A JP S5238915 A JPS5238915 A JP S5238915A JP 50114587 A JP50114587 A JP 50114587A JP 11458775 A JP11458775 A JP 11458775A JP S5238915 A JPS5238915 A JP S5238915A
Authority
JP
Japan
Prior art keywords
sound transducer
electric sound
opposite
magnetic material
magnetic
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.)
Pending
Application number
JP50114587A
Other languages
Japanese (ja)
Inventor
Shigeru Morita
Kimio Momiyama
Junichi Tanaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP50114587A priority Critical patent/JPS5238915A/en
Publication of JPS5238915A publication Critical patent/JPS5238915A/en
Pending 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
    • H04R9/04—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

Abstract

PURPOSE:To improve the efficiency of magnetic material by using a low efficient magnet, by burning magnetic material whose section is convex, in such a position that the width of the magnetic materail is opposite to the side of vibration film and between permanent magnets which are arranged so that the same poles are opposite.
JP50114587A 1975-09-22 1975-09-22 Electric sound transducer Pending JPS5238915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50114587A JPS5238915A (en) 1975-09-22 1975-09-22 Electric sound transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50114587A JPS5238915A (en) 1975-09-22 1975-09-22 Electric sound transducer

Publications (1)

Publication Number Publication Date
JPS5238915A true JPS5238915A (en) 1977-03-25

Family

ID=14641576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50114587A Pending JPS5238915A (en) 1975-09-22 1975-09-22 Electric sound transducer

Country Status (1)

Country Link
JP (1) JPS5238915A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5697865A (en) * 1980-01-07 1981-08-06 Hitachi Ltd Ionization detector
US4471173A (en) * 1982-03-01 1984-09-11 Magnepan, Inc. Piston-diaphragm speaker
US4480155A (en) * 1982-03-01 1984-10-30 Magnepan, Inc. Diaphragm type magnetic transducer
US4527017A (en) * 1979-11-20 1985-07-02 U.S. Philips Corporation Magnet system for an electroacoustic transducer
JPH02276934A (en) * 1989-04-19 1990-11-13 Hitachi Ltd Calorie measuring instrument
US5901235A (en) * 1997-09-24 1999-05-04 Eminent Technology, Inc. Enhanced efficiency planar transducers
EP1919253A1 (en) * 2006-10-31 2008-05-07 Sanyo Electric Co., Ltd. Electroacoustic transducer
WO2010106690A1 (en) * 2009-03-19 2010-09-23 パイオニア株式会社 Magnetic circuit for speaker device and speaker device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527017A (en) * 1979-11-20 1985-07-02 U.S. Philips Corporation Magnet system for an electroacoustic transducer
JPS5697865A (en) * 1980-01-07 1981-08-06 Hitachi Ltd Ionization detector
JPS6333102B2 (en) * 1980-01-07 1988-07-04 Hitachi Ltd
US4471173A (en) * 1982-03-01 1984-09-11 Magnepan, Inc. Piston-diaphragm speaker
US4480155A (en) * 1982-03-01 1984-10-30 Magnepan, Inc. Diaphragm type magnetic transducer
JPH02276934A (en) * 1989-04-19 1990-11-13 Hitachi Ltd Calorie measuring instrument
US5901235A (en) * 1997-09-24 1999-05-04 Eminent Technology, Inc. Enhanced efficiency planar transducers
US6185310B1 (en) 1997-09-24 2001-02-06 Eminent Technology Incorporated Planar magnetic acoustical transducer stamped pole structures
EP1919253A1 (en) * 2006-10-31 2008-05-07 Sanyo Electric Co., Ltd. Electroacoustic transducer
WO2010106690A1 (en) * 2009-03-19 2010-09-23 パイオニア株式会社 Magnetic circuit for speaker device and speaker device
JPWO2010106690A1 (en) * 2009-03-19 2012-09-20 パイオニア株式会社 Speaker device

Similar Documents

Publication Publication Date Title
NL185272C (en) MAGNETIC CLAMPING PLATE WITH PERMANENT AND ELECTROPERMANENT MAGNETS.
ES405523A1 (en) Inductor alternator
JPS5238915A (en) Electric sound transducer
IT1040237B (en) IMPROVEMENTS TO THE MAGNETIC CONTROL DEVICES WITH PERMANENT MAGNETS
IT964218B (en) ELECTRIC MACHINE EXCITED WITH PERMANENT MAGNETS
FI48535C (en) Permanent magnet strong field separator
IT978717B (en) IMPROVEMENTS RELATING TO PERMANENT MAGNET SITIVE DEVICES
GB1034353A (en) Electric clock mechanisms
IT1033466B (en) ELECTRIC MACHINE WITH PERMANENT MAGNET EXCITATION
JPS5237419A (en) Whole device dynamic speaker
JPS5243419A (en) Electroacoustic transducer
IT1063654B (en) PERMANENT MAGNET INDUCTORS MOTOR
JPS524228A (en) Non-directional dynamic type electric sound convertor
JPS5241520A (en) Electroacoustic converter
JPS5288317A (en) Magnetic head
GB1077701A (en) Permanent magnet rotors for miniature electrical apparatus, more particularly for synchronous miniature electric motors
JPS5263709A (en) Film magnetic head of magnetic resistance effective type
SE7604342L (en) PICKUP
JPS51136417A (en) Flat-plate-type electric sound converter
JPS51117615A (en) Portable small-sized speaker
JPS5373672A (en) Improved filter
MX3805E (en) IMPROVEMENTS IN THE METHOD TO MANUFACTURE INDUCTION WATTHOMETERS BASED ON PERMANENT MAGNETS OF COBALT-RARE EARTH
GB904055A (en) Improvements in or relating to magnetic workholders
JPS524227A (en) Dynamic type electric sound convertor
JPS51128519A (en) Loudspeaker

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term