BE370722A - - Google Patents
Info
- Publication number
- BE370722A BE370722A BE370722DA BE370722A BE 370722 A BE370722 A BE 370722A BE 370722D A BE370722D A BE 370722DA BE 370722 A BE370722 A BE 370722A
- Authority
- BE
- Belgium
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
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL351723X | 1929-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE370722A true BE370722A (en:Method) |
Family
ID=19785063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE370722D BE370722A (en:Method) | 1929-06-22 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE370722A (en:Method) |
| FR (1) | FR696323A (en:Method) |
| GB (1) | GB351723A (en:Method) |
| NL (1) | NL32105C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2547565A (en) * | 1946-09-26 | 1951-04-03 | Wright Zimmerman Inc | Speaker having a tubular pot |
-
0
- NL NL32105D patent/NL32105C/xx active
- BE BE370722D patent/BE370722A/xx unknown
-
1930
- 1930-05-30 FR FR696323D patent/FR696323A/fr not_active Expired
- 1930-06-11 GB GB17943/30A patent/GB351723A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL32105C (en:Method) | |
| FR696323A (fr) | 1930-12-29 |
| GB351723A (en) | 1931-07-02 |