GB393982A - Improvements in telephone repeaters - Google Patents
Improvements in telephone repeatersInfo
- Publication number
- GB393982A GB393982A GB2583931A GB2583931A GB393982A GB 393982 A GB393982 A GB 393982A GB 2583931 A GB2583931 A GB 2583931A GB 2583931 A GB2583931 A GB 2583931A GB 393982 A GB393982 A GB 393982A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- line
- way
- transformer
- amplifier
- 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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
393,982. Two - way transmission. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, and PADDLE, L. H., 2, Burlington Gardens, Chiswick, both in London. Sept. 15, 1931, No. 25839. [Class 40 (iv).] A two-way line 1 is coupled to two one-way amplifiers 5, 10, through two transformers 2, 3, of which one pair of corresponding windings a are connected to the line 1 and to an artificial line 4 respectively, the second pair of windings b are connected in series or parallel through a step-up transformer 11 to the input circuit of one amplifier 5, whilst the third windings c are connected to the output circuit of the other amplifier 10. The functions of the windings a, c may be performed by a single winding. In a modification, Fig. 4, two valves in parallel are employed for each direction of transmission and the connection to the primary of transformer 11 is made from a tapping on a resistance 14. Specification 321,673, [Class 40 (iv), Telephones &c.], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2583931A GB393982A (en) | 1931-09-15 | 1931-09-15 | Improvements in telephone repeaters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2583931A GB393982A (en) | 1931-09-15 | 1931-09-15 | Improvements in telephone repeaters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB393982A true GB393982A (en) | 1933-06-15 |
Family
ID=10234184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2583931A Expired GB393982A (en) | 1931-09-15 | 1931-09-15 | Improvements in telephone repeaters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB393982A (en) |
-
1931
- 1931-09-15 GB GB2583931A patent/GB393982A/en not_active Expired
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