GB490225A - Improvements in and relating to electrical pick-ups - Google Patents
Improvements in and relating to electrical pick-upsInfo
- Publication number
- GB490225A GB490225A GB400137A GB400137A GB490225A GB 490225 A GB490225 A GB 490225A GB 400137 A GB400137 A GB 400137A GB 400137 A GB400137 A GB 400137A GB 490225 A GB490225 A GB 490225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- short
- ups
- class
- circuited path
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
490,225. Gramophone pick-ups. BRITISH THOMSON-HOUSTON CO., Ltd., and SIMPSON, H. Feb. 10, 1937, No. 4001. [Class 40 (iv)] In a gramophone pick-up of the type in which the output potential is generated in a fixed winding 2 surrounding a movable armature 1, a short-circuited path of high electric conductivity is provided in close proximity to the winding. To form the short-circuited path the centre drum 4 joining the flanges 3 of the spool carrying the winding may be made of metal, or, Fig. 2 (not shown), the spool itself may be made of metal. In an alternative arrangement, Fig. 3 (not shown), the short-circuited path consists of a secondary winding shortcircuited on itself and arranged within the main winding. Specification 252,228, [Class 40 (iv)], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB400137A GB490225A (en) | 1937-02-10 | 1937-02-10 | Improvements in and relating to electrical pick-ups |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB400137A GB490225A (en) | 1937-02-10 | 1937-02-10 | Improvements in and relating to electrical pick-ups |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB490225A true GB490225A (en) | 1938-08-10 |
Family
ID=9768893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB400137A Expired GB490225A (en) | 1937-02-10 | 1937-02-10 | Improvements in and relating to electrical pick-ups |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB490225A (en) |
-
1937
- 1937-02-10 GB GB400137A patent/GB490225A/en not_active Expired
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