JPS4868217A - - Google Patents
Info
- Publication number
- JPS4868217A JPS4868217A JP46102517A JP10251771A JPS4868217A JP S4868217 A JPS4868217 A JP S4868217A JP 46102517 A JP46102517 A JP 46102517A JP 10251771 A JP10251771 A JP 10251771A JP S4868217 A JPS4868217 A JP S4868217A
- Authority
- JP
- Japan
- 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
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
- 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
- H04R2209/021—Reduction of eddy currents in the magnetic circuit of electrodynamic loudspeaker transducer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46102517A JPS4868217A (en) | 1971-12-17 | 1971-12-17 | |
DE2261500A DE2261500B2 (en) | 1971-12-17 | 1972-12-15 | Electroacoustic converter |
US315962A US3922501A (en) | 1971-12-17 | 1972-12-18 | Moving voice coil electro-acoustic converter with laminated magnetically anisotropic poles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46102517A JPS4868217A (en) | 1971-12-17 | 1971-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4868217A true JPS4868217A (en) | 1973-09-18 |
Family
ID=14329535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP46102517A Pending JPS4868217A (en) | 1971-12-17 | 1971-12-17 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3922501A (en) |
JP (1) | JPS4868217A (en) |
DE (1) | DE2261500B2 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4289937A (en) * | 1978-05-30 | 1981-09-15 | Mitsubishi Denki Kabushiki Kaisha | Speaker with fine grain ferromagnetic material on center pole or ring |
US4827162A (en) * | 1987-03-02 | 1989-05-02 | Unisys Corp. | Controlled drag for magnet actuator |
US5357587A (en) * | 1992-12-23 | 1994-10-18 | Grodinsky Robert M | Distortion reduction in loudspeakers |
US5381483A (en) * | 1993-04-05 | 1995-01-10 | Commonwealth Of Puerto Rico | Minimal inductance electrodynamic transducer |
US6289106B1 (en) | 1997-08-08 | 2001-09-11 | Hong Long Industrial Co., Ltd. | Cap and center pole apparatus and method of coupling |
US6768806B1 (en) * | 1998-03-19 | 2004-07-27 | Harman International Industries, Incorporated | Shorting rings in dual-coil dual-gap loudspeaker drivers |
CN1275300A (en) * | 1998-07-21 | 2000-11-29 | Jbl公司 | Miniature full range loudspeaker |
US6653753B1 (en) * | 1999-04-13 | 2003-11-25 | Matsushita Electric Industrial Co., Ltd. | Linear motor |
GB9916926D0 (en) * | 1999-07-20 | 1999-09-22 | New Transducers Ltd | Magnet assembly |
JP2002064968A (en) * | 2000-08-21 | 2002-02-28 | Nippon Thompson Co Ltd | Slider with built-in moving coil linear motor |
FR2836000B1 (en) * | 2002-02-13 | 2004-05-28 | Harman Internat | ELECTRODYNAMIC MOTOR WITH MOBILE COIL, PARTICULARLY FOR SPEAKER, SPEAKER AND ADAPTED POLAR PART |
US7457429B2 (en) * | 2003-04-25 | 2008-11-25 | Step Technologies Inc. | Laminated motor structure for electromagnetic transducer |
JP2006041601A (en) * | 2004-07-22 | 2006-02-09 | Pioneer Electronic Corp | Magnetic circuit for speaker and manufacturing method thereof, and speaker device |
GB2527533B (en) * | 2014-06-24 | 2016-07-13 | Amina Tech Ltd | Moving coil drive unit and audio drivers incorporating the same |
CN107948802B (en) * | 2017-12-25 | 2024-04-23 | 厦门东声电子有限公司 | Telephone receiver |
CN108460225B (en) * | 2018-03-21 | 2021-08-31 | 华北电力大学(保定) | Simulation method and system of anisotropic metal sheet induction type magnetoacoustic image |
EP3932090A1 (en) * | 2019-02-28 | 2022-01-05 | Purifi ApS | Loudspeaker motor with improved linearity |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3632904A (en) * | 1970-03-24 | 1972-01-04 | Paul Mauz | Moving coil loudspeaker with eddy current suppression |
US3665352A (en) * | 1970-05-12 | 1972-05-23 | Deutsche Edelstahlwerke Ag | Permanent magnet system for a loudspeaker |
US3783311A (en) * | 1970-12-19 | 1974-01-01 | Coral Audio Corp | Magnetic device for use in acoustic apparatus |
JPS5235294B2 (en) * | 1971-12-17 | 1977-09-08 |
-
1971
- 1971-12-17 JP JP46102517A patent/JPS4868217A/ja active Pending
-
1972
- 1972-12-15 DE DE2261500A patent/DE2261500B2/en not_active Ceased
- 1972-12-18 US US315962A patent/US3922501A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3922501A (en) | 1975-11-25 |
DE2261500A1 (en) | 1973-06-28 |
DE2261500B2 (en) | 1975-07-03 |