GB342799A - Improvements in or relating to telephone transmission or like systems - Google Patents
Improvements in or relating to telephone transmission or like systemsInfo
- Publication number
- GB342799A GB342799A GB3470229A GB3470229A GB342799A GB 342799 A GB342799 A GB 342799A GB 3470229 A GB3470229 A GB 3470229A GB 3470229 A GB3470229 A GB 3470229A GB 342799 A GB342799 A GB 342799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- systems
- telephone transmission
- merivale
- durning
- 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
- H04B3/04—Control of transmission; Equalising
- H04B3/14—Control of transmission; Equalising characterised by the equalising network used
- H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
- H04B3/145—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers variable equalisers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Filters And Equalizers (AREA)
Abstract
342,799. Correcting distortion. AUTOMATIC TELEPHONE MANUFACTURING CO., Ltd., Strowger Works, and SMITH, J., 9, Merivale Street, Durning Road, both in Liverpool. Nov. 13, 1929, No. 34702. [Class 40 (iv).] An attenuation equalizer incorporated in the input of an amplifier or between amplifiers comprises a differential transformer having two secondary windings T2, T3, the balanced terminals of which are connected to an adjustable resistance or impedance A1 and to a capacity C in the manner shown to form parallel circuits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3470229A GB342799A (en) | 1929-11-13 | 1929-11-13 | Improvements in or relating to telephone transmission or like systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3470229A GB342799A (en) | 1929-11-13 | 1929-11-13 | Improvements in or relating to telephone transmission or like systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB342799A true GB342799A (en) | 1931-02-12 |
Family
ID=10368894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3470229A Expired GB342799A (en) | 1929-11-13 | 1929-11-13 | Improvements in or relating to telephone transmission or like systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB342799A (en) |
-
1929
- 1929-11-13 GB GB3470229A patent/GB342799A/en not_active Expired
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