JPS5137774B2 - - Google Patents
Info
- Publication number
- JPS5137774B2 JPS5137774B2 JP49024012A JP2401274A JPS5137774B2 JP S5137774 B2 JPS5137774 B2 JP S5137774B2 JP 49024012 A JP49024012 A JP 49024012A JP 2401274 A JP2401274 A JP 2401274A JP S5137774 B2 JPS5137774 B2 JP S5137774B2
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
- H02K33/04—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
- H02K33/06—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation with polarised armatures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Headphones And Earphones (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP49024012A JPS5137774B2 (ja) | 1974-02-28 | 1974-02-28 | |
US05/552,887 US4015227A (en) | 1974-02-28 | 1975-02-25 | Electromagnetic transducer |
GB8251/75A GB1506018A (en) | 1974-02-28 | 1975-02-27 | Electro-acoustic transducer |
CA220,967A CA1030649A (en) | 1974-02-28 | 1975-02-28 | Electromagnetic transducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP49024012A JPS5137774B2 (ja) | 1974-02-28 | 1974-02-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS50127617A JPS50127617A (ja) | 1975-10-07 |
JPS5137774B2 true JPS5137774B2 (ja) | 1976-10-18 |
Family
ID=12126624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP49024012A Expired JPS5137774B2 (ja) | 1974-02-28 | 1974-02-28 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4015227A (ja) |
JP (1) | JPS5137774B2 (ja) |
CA (1) | CA1030649A (ja) |
GB (1) | GB1506018A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0313000U (ja) * | 1989-06-19 | 1991-02-08 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58116397U (ja) * | 1982-02-02 | 1983-08-09 | 株式会社精工舎 | 電磁ブザ− |
US4843628A (en) * | 1986-07-10 | 1989-06-27 | Stanton Magnetics, Inc. | Inertial microphone/receiver with extended frequency response |
US4852444A (en) * | 1986-12-04 | 1989-08-01 | Hoover Alan A | Electro-mechanical transducer which couples positive acoustic feedback into an electric amplified guitar body for the purpose of sustaining played notes |
US5299176A (en) * | 1991-12-20 | 1994-03-29 | Tibbetts Industries, Inc. | Balanced armature transducers with transverse gap |
JP2905350B2 (ja) * | 1992-11-18 | 1999-06-14 | スター精密 株式会社 | 電気音響変換器 |
NL1004669C2 (nl) * | 1996-12-02 | 1998-06-03 | Microtronic Nederland Bv | Transducer. |
WO2000027166A2 (en) * | 1998-11-02 | 2000-05-11 | Sarnoff Corporation | Transducer concepts for hearing aids and other devices |
US6658134B1 (en) | 1999-08-16 | 2003-12-02 | Sonionmicrotronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
JP2001078295A (ja) * | 1999-09-07 | 2001-03-23 | Matsushita Electric Ind Co Ltd | 電磁型電気音響変換器 |
US7817815B2 (en) * | 2000-05-09 | 2010-10-19 | Knowles Electronics, Llc | Armature for a receiver |
US20020003890A1 (en) * | 2000-05-09 | 2002-01-10 | Daniel Warren | Armature for a receiver |
US7054460B2 (en) * | 2000-09-29 | 2006-05-30 | Sonionmems A/S | Micromachined magnetically balanced membrane actuator |
KR100415052B1 (ko) * | 2001-05-17 | 2004-01-13 | (주)트윈 세이버 | 대출력 음향-진동 변환장치 |
US9888322B2 (en) | 2014-12-05 | 2018-02-06 | Knowles Electronics, Llc | Receiver with coil wound on a stationary ferromagnetic core |
US11197099B2 (en) * | 2019-06-12 | 2021-12-07 | AAC Technologies Pte. Ltd. | Screen sounding device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB300837A (en) * | 1928-02-10 | 1928-11-22 | Edward Paterson | Improvements in and connected with sound reproducing instruments |
US2116293A (en) * | 1932-07-13 | 1938-05-03 | Weitkowitz Franz | Device adapted to loudspeakers, telephones, or relays |
US2566850A (en) * | 1946-10-19 | 1951-09-04 | Bell Telephone Labor Inc | Electroacoustic transducer |
US3060282A (en) * | 1957-07-26 | 1962-10-23 | Baldwin Piano Co | Electroacoustic transducer |
AT229386B (de) * | 1960-11-30 | 1963-09-10 | Elektroakustischer Wandler nach dem elektromagnetischen Prinzip |
-
1974
- 1974-02-28 JP JP49024012A patent/JPS5137774B2/ja not_active Expired
-
1975
- 1975-02-25 US US05/552,887 patent/US4015227A/en not_active Expired - Lifetime
- 1975-02-27 GB GB8251/75A patent/GB1506018A/en not_active Expired
- 1975-02-28 CA CA220,967A patent/CA1030649A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0313000U (ja) * | 1989-06-19 | 1991-02-08 |
Also Published As
Publication number | Publication date |
---|---|
CA1030649A (en) | 1978-05-02 |
US4015227A (en) | 1977-03-29 |
GB1506018A (en) | 1978-04-05 |
JPS50127617A (ja) | 1975-10-07 |