GB408445A - System for communication by means of carrier frequencies through high tension conductors - Google Patents
System for communication by means of carrier frequencies through high tension conductorsInfo
- Publication number
- GB408445A GB408445A GB8999/33A GB899933A GB408445A GB 408445 A GB408445 A GB 408445A GB 8999/33 A GB8999/33 A GB 8999/33A GB 899933 A GB899933 A GB 899933A GB 408445 A GB408445 A GB 408445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- currents
- signalling
- march
- protect
- carrier
- 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
- 239000004020 conductor Substances 0.000 title 1
- 230000011664 signaling Effects 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
Abstract
408,445. Wired wireless systems; impedance networks. SIEMENS & HALSKE AKT.- GES., Siemensstadt, Berlin. March 24, 1933, No. 8999. Convention date, March 24, 1932. [Classes 40 (iii) and 40 (v).] In a wired high-frequency signalling system, filter circuits of the four-element type comprising series inductances and shunt capacities are inserted in the power-line in order to protect the carrier currents from leakage losses at switching and similar points. They are inserted, for instance, at 14 and 15, Fig. 2, before and after the switching station 24, the signalling currents being diverted through a shunt circuit 28. Similar filters may be located at 13 and 17 before and after the HF signalling apparatus 22, 23 ; and at 16 to protect the sidechannel 20, 21. Fig. 5 shows a constructional form of low-pass filter, the carrier-currents being applied at 14. One line 1 of a threephase system 1, 2, 3 is formed into a loop 4 and four earthed metal segments 6, 7, 8, 9 are placed around'the main cable, the points of separation being provided with iron cores 11, 12, 13 of laminated plates to introduce series inductance.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE408445X | 1932-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB408445A true GB408445A (en) | 1934-04-12 |
Family
ID=6422294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8999/33A Expired GB408445A (en) | 1932-03-24 | 1933-03-24 | System for communication by means of carrier frequencies through high tension conductors |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR753088A (en) |
| GB (1) | GB408445A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989003623A1 (en) * | 1987-10-15 | 1989-04-20 | The South East Queensland Electricity Board | Decoupling network and communication system |
| US7843145B2 (en) | 2006-01-13 | 2010-11-30 | Universal Lighting Technologies, Inc. | System and method for power line carrier communication using high frequency tone bursts |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742902C (en) * | 1938-07-21 | 1943-12-14 | Siemens Ag | Transmission system, consisting of coaxial cable and amplifier |
| DE742808C (en) * | 1939-07-09 | 1943-12-11 | Siemens Ag | Single channel system for multiple carrier-frequency message transmission |
-
1933
- 1933-03-24 FR FR753088D patent/FR753088A/en not_active Expired
- 1933-03-24 GB GB8999/33A patent/GB408445A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989003623A1 (en) * | 1987-10-15 | 1989-04-20 | The South East Queensland Electricity Board | Decoupling network and communication system |
| AU606478B2 (en) * | 1987-10-15 | 1991-02-07 | South East Queensland Electricity Corporation | Decoupling network and communication system |
| US7843145B2 (en) | 2006-01-13 | 2010-11-30 | Universal Lighting Technologies, Inc. | System and method for power line carrier communication using high frequency tone bursts |
Also Published As
| Publication number | Publication date |
|---|---|
| FR753088A (en) | 1933-10-06 |
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