SU523540A1 - Electroacoustic transducer - Google Patents
Electroacoustic transducerInfo
- Publication number
- SU523540A1 SU523540A1 SU2106152A SU2106152A SU523540A1 SU 523540 A1 SU523540 A1 SU 523540A1 SU 2106152 A SU2106152 A SU 2106152A SU 2106152 A SU2106152 A SU 2106152A SU 523540 A1 SU523540 A1 SU 523540A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electroacoustic transducer
- magnet
- magnetic field
- working gap
- permanent magnets
- Prior art date
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
- H04R2209/022—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)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
Магнитна система электроакустического преобразовател состоит из цилиндрического магнитоПровода 1, двух посто нных магнитов 2, выполненных в виде сегментов и намагниченных в нротивсположных направлени х, полюсных наконечников 3, повтор ющих форму поверхности посто нных магнитов. Полюсные наконечники, расположенные у одноименных полюсов посто нных магнитоБ, соединены пр моугольными перемычками 4 из магнитом гкого материала. Перемычки 4 смещены относительно оси .преобразовател на половину радиуса посто нного магнита и равны по ширине двум третьим радиуса посто нного магнита . Пеподвижна обмотка 5 расположена над перемычками 4. На каркасе 6, св занном с центрирующей шайбой 7, укреплено короткозамкнутое металлическое кольцо 8. Магнитпа и подвижна системы электроакустического преобразовател конструктивно объединены при помощи фигурной втулки 9 из немагнитного материала. Толщина магнитов пор дка в три раза превышает величипу рабочего зазо ра. Посто нные магниты создают в рабочем зазоре магнитиое поле.The magnet system of the electroacoustic converter consists of a cylindrical magnetowire 1, two permanent magnets 2, made in the form of segments and magnetized in opposite directions, pole pieces 3, repeating the shape of the surface of the permanent magnets. The pole tips located at the same poles of the permanent magnetobens are connected by rectangular bridges 4 of a magnet of a soft material. Jumpers 4 are offset relative to the axis of the transducer by half the radius of the permanent magnet and equal in width to two third of the radius of the permanent magnet. The winding 5 is located above the jumpers 4. On the frame 6, connected with the centering washer 7, a short-circuited metal ring 8 is reinforced. The magnet thickness is about three times the magnitude of the working gap. Permanent magnets create a magnetic field in the working gap.
При подведении переменного тока звуковой частоты к ненодвижной з;вуковой катушке в магнитной системе возбуждаетс переменное магнитное ноле, которое накладываетс в рабочем зазоре на магнитное лоле, создаваемое ПОСТОЯННЫМИ магнитами. В результате этого кольцо 8, а следовательно и вс подвижна система колеблютс в осевом направлении со звуковой частотой.When an ac sound frequency is applied to a non-mobile h; an alternating magnetic field is excited in the magnetic system of the sound coil in the magnetic system, which in the working gap is applied to the magnetic field created by the PERMANENT magnets. As a result, the ring 8, and hence the wholly mobile system, oscillates in the axial direction with a sound frequency.
Предлагаемый электроакустический преобразователь позвол ет уменьшить потоки рассе ии и увеличить концентрацию магнитного пол в рабочем зазоре.The proposed electroacoustic transducer allows reducing scattering fluxes and increasing the concentration of the magnetic field in the working gap.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2106152A SU523540A1 (en) | 1975-01-08 | 1975-01-08 | Electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2106152A SU523540A1 (en) | 1975-01-08 | 1975-01-08 | Electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU523540A1 true SU523540A1 (en) | 1976-07-30 |
Family
ID=20610421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2106152A SU523540A1 (en) | 1975-01-08 | 1975-01-08 | Electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU523540A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130460A1 (en) * | 1991-09-13 | 1993-03-18 | Nokia Deutschland Gmbh | ELECTROMAGNETIC CONVERTER |
-
1975
- 1975-01-08 SU SU2106152A patent/SU523540A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130460A1 (en) * | 1991-09-13 | 1993-03-18 | Nokia Deutschland Gmbh | ELECTROMAGNETIC CONVERTER |
| US5424496A (en) * | 1991-09-13 | 1995-06-13 | Nokia (Deutschland) Gmbh | Electromagnetic converter |
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