GB528300A - Improvements in or relating to electrical signalling systems - Google Patents
Improvements in or relating to electrical signalling systemsInfo
- Publication number
- GB528300A GB528300A GB1323239A GB1323239A GB528300A GB 528300 A GB528300 A GB 528300A GB 1323239 A GB1323239 A GB 1323239A GB 1323239 A GB1323239 A GB 1323239A GB 528300 A GB528300 A GB 528300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- impedances
- interference
- frequencies
- relating
- 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
- H04B3/32—Reducing cross-talk, e.g. by compensating
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
528,300. Preventing interference. HALSEY, R. J. May 3, 1939, No. 13232. [Class 40 (iv)] High-frequency interference is eliminated from an overhead carrier line by grounding both wires through the windings of a tightly coupled transformer and suitably chosen or adjustable impedances. The connection to ground may include a common condenser which tunes the leakage inductance to the interfering frequency. The individual impedances may each consist of a resistance shunted by a condenser or a variably tapped resistance 45 and condenser 46 may be provided. Where two widely separated interference frequencies are concerned each is tackled separately by the aid of filters 43 or the impedances are designed to have the correct values at both frequencies, separate networks being provided for the respective windings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1323239A GB528300A (en) | 1939-05-03 | 1939-05-03 | Improvements in or relating to electrical signalling systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1323239A GB528300A (en) | 1939-05-03 | 1939-05-03 | Improvements in or relating to electrical signalling systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB528300A true GB528300A (en) | 1940-10-25 |
Family
ID=10019239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1323239A Expired GB528300A (en) | 1939-05-03 | 1939-05-03 | Improvements in or relating to electrical signalling systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB528300A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2505777A (en) * | 1946-04-12 | 1950-05-02 | Samuel W Lichtman | Automatic volume control filter circuit |
-
1939
- 1939-05-03 GB GB1323239A patent/GB528300A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2505777A (en) * | 1946-04-12 | 1950-05-02 | Samuel W Lichtman | Automatic volume control filter circuit |
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