GB382600A - Circuit arrangement for the recording and reproducing coils of telegraphones - Google Patents
Circuit arrangement for the recording and reproducing coils of telegraphonesInfo
- Publication number
- GB382600A GB382600A GB21449/32A GB2144932A GB382600A GB 382600 A GB382600 A GB 382600A GB 21449/32 A GB21449/32 A GB 21449/32A GB 2144932 A GB2144932 A GB 2144932A GB 382600 A GB382600 A GB 382600A
- Authority
- GB
- United Kingdom
- Prior art keywords
- recording
- circuits
- circuit
- circuit arrangement
- range
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
382,600. Magnetic recording and reproducing apparatus. BRITISH BLATTNERPHONE (STILLE SYSTEM), Ltd., 35, Little Newport Street, London. July 29, 1932, No. 21449. Convention date, July 30, 1931. [Class 40 (ii).] The coils of the recording or reproducing head of a magnetic talking machine are provided with a plurality of separate windings connected in separate circuits having different natural frequencies which are so chosen that the circuit arrangement as a whole has approximately constant impedance to all frequencies within the significant acoustic range. The natural frequencies of the individual circuits are arranged to be at the limit or outside of the significant range. The Figure shows the magnets 11, 12 of the device provided with two windings 3, 4 and 7, 8. The winding 3, 4 is in circuit with a blocking condenser 5 and the secondary 2 of a transformer connected with the transmitter or receiver and the winding 7, 8 is in circuit with a blocking condenser 9 and the secondary 6 of the transformer. The two circuits are such that their resonance peaks lie outside or at least at the upper and lower limits of the significant acoustic frequency range.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE382600X | 1931-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB382600A true GB382600A (en) | 1932-10-27 |
Family
ID=6359947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21449/32A Expired GB382600A (en) | 1931-07-30 | 1932-07-29 | Circuit arrangement for the recording and reproducing coils of telegraphones |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB382600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2579125A (en) * | 1947-12-11 | 1951-12-18 | Perreau Jules Henri | System for the reproduction of magnetic records |
-
1932
- 1932-07-29 GB GB21449/32A patent/GB382600A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2579125A (en) * | 1947-12-11 | 1951-12-18 | Perreau Jules Henri | System for the reproduction of magnetic records |
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