GB506421A - Improvements in electro-dynamic loud-speakers - Google Patents
Improvements in electro-dynamic loud-speakersInfo
- Publication number
- GB506421A GB506421A GB23416/37A GB2341637A GB506421A GB 506421 A GB506421 A GB 506421A GB 23416/37 A GB23416/37 A GB 23416/37A GB 2341637 A GB2341637 A GB 2341637A GB 506421 A GB506421 A GB 506421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- transformer
- electromagnet
- loud
- speaker
- 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.)
- Expired
Links
- 230000005520 electrodynamics Effects 0.000 title 1
- 238000003475 lamination Methods 0.000 abstract 2
- 239000011800 void material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (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 |
|---|---|---|---|
| FR48418T | 1937-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506421A true GB506421A (en) | 1939-05-26 |
Family
ID=8683761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23416/37A Expired GB506421A (en) | 1937-04-28 | 1937-08-26 | Improvements in electro-dynamic loud-speakers |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE423343A (enrdf_load_html_response) |
| FR (2) | FR822569A (enrdf_load_html_response) |
| GB (1) | GB506421A (enrdf_load_html_response) |
-
0
- BE BE423343D patent/BE423343A/xx unknown
-
1936
- 1936-09-10 FR FR822569D patent/FR822569A/fr not_active Expired
-
1937
- 1937-04-28 FR FR48418D patent/FR48418E/fr not_active Expired
- 1937-08-26 GB GB23416/37A patent/GB506421A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR822569A (fr) | 1938-01-04 |
| BE423343A (enrdf_load_html_response) | |
| FR48418E (fr) | 1938-02-03 |
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