GB322517A - Device for the control of the measure of transmission in telephone systems, amplifying systems or the like - Google Patents
Device for the control of the measure of transmission in telephone systems, amplifying systems or the likeInfo
- Publication number
- GB322517A GB322517A GB2560228A GB2560228A GB322517A GB 322517 A GB322517 A GB 322517A GB 2560228 A GB2560228 A GB 2560228A GB 2560228 A GB2560228 A GB 2560228A GB 322517 A GB322517 A GB 322517A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- windings
- valve
- gain
- transformer
- 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
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR659990D FR659990A (fr) | 1928-09-06 | 1928-09-05 | Dispositif de commande du degré de transmission dans les systèmes téléphoniques, les installations d'amplificateurs et les installations similaires |
GB2560228A GB322517A (en) | 1928-09-06 | 1928-09-06 | Device for the control of the measure of transmission in telephone systems, amplifying systems or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2560228A GB322517A (en) | 1928-09-06 | 1928-09-06 | Device for the control of the measure of transmission in telephone systems, amplifying systems or the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB322517A true GB322517A (en) | 1929-12-06 |
Family
ID=10230343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2560228A Expired GB322517A (en) | 1928-09-06 | 1928-09-06 | Device for the control of the measure of transmission in telephone systems, amplifying systems or the like |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR659990A (fr) |
GB (1) | GB322517A (fr) |
-
1928
- 1928-09-05 FR FR659990D patent/FR659990A/fr not_active Expired
- 1928-09-06 GB GB2560228A patent/GB322517A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR659990A (fr) | 1929-07-09 |
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