GB510792A - Improvements in or relating to electrical signalling systems - Google Patents

Improvements in or relating to electrical signalling systems

Info

Publication number
GB510792A
GB510792A GB3782/38A GB378238A GB510792A GB 510792 A GB510792 A GB 510792A GB 3782/38 A GB3782/38 A GB 3782/38A GB 378238 A GB378238 A GB 378238A GB 510792 A GB510792 A GB 510792A
Authority
GB
United Kingdom
Prior art keywords
network
signals
mixing valve
signal
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
Application number
GB3782/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB3782/38A priority Critical patent/GB510792A/en
Publication of GB510792A publication Critical patent/GB510792A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

510,792. Signalling over power circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and ROSEBY, P. N. Feb. 7, 1938, No. 3782. [Class 40 (iv)] In a system in which signals are transmitted over a low-tension power network via a hightension network, signals at the receiving end of the H.T. network are lowered in frequency by heterodyning with a locally produced oscillation or with one sent out with the signal. As shown, signals at 2000 and 2800 cycles are applied by apparatus HFG to an L.T. network and are conveyed via an H.T. network 10... 12 to a transformer station B where the two components are filtered out and applied to separate grids of a mixing valve V. The beat frequency is amplified at 13 and applied to an L.T. network 1 ... 3, N. The amplifier 13 may be normally inactive, its cathode heating circuit being closed by a relay in the anode circuit of the mixing valve when a signal is received. Specification. 502,407 is referred to in the Provisional Specification.
GB3782/38A 1938-02-07 1938-02-07 Improvements in or relating to electrical signalling systems Expired GB510792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3782/38A GB510792A (en) 1938-02-07 1938-02-07 Improvements in or relating to electrical signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3782/38A GB510792A (en) 1938-02-07 1938-02-07 Improvements in or relating to electrical signalling systems

Publications (1)

Publication Number Publication Date
GB510792A true GB510792A (en) 1939-08-08

Family

ID=9764815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3782/38A Expired GB510792A (en) 1938-02-07 1938-02-07 Improvements in or relating to electrical signalling systems

Country Status (1)

Country Link
GB (1) GB510792A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188619A (en) * 1978-08-17 1980-02-12 Rockwell International Corporation Transformer arrangement for coupling a communication signal to a three-phase power line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188619A (en) * 1978-08-17 1980-02-12 Rockwell International Corporation Transformer arrangement for coupling a communication signal to a three-phase power line

Similar Documents

Publication Publication Date Title
GB579972A (en) Secrecy communication system
GB510792A (en) Improvements in or relating to electrical signalling systems
GB533566A (en) Improvements in or relating to electric communication systems
GB619478A (en) Improvements in or relating to high frequency transmission and receiving systems
GB509866A (en) Improvements in or relating to devices for the selective remote control of independent mechanisms
GB341766A (en) Improvements in or relating to radio and similar high frequency communication systems
GB504711A (en) Improvements in signal-receivers for carrier-telephony systems
GB290298A (en) Improvements relating to the synchronization of electrical devices
GB227887A (en) Improvements in or relating to arrangements for operating electrical apparatus
DE857084C (en) Signal receiver
GB457125A (en) Improvements in combined electrical signalling and telephone systems
GB527677A (en) Improvements relating to telephone systems
GB502407A (en) Improvements in electrical signalling systems
GB516138A (en) Improvements in or relating to electric systems for railway signal and point control
GB719139A (en) Ringing current repeaters
GB518619A (en) Improvements relating to electrical remote-control or signalling systems
GB460187A (en) Improvements in or relating to electrical signalling systems
GB605464A (en) Improvements in or relating to supervisory devices for radio communication apparatus
GB648627A (en) Television i.f. amplifier
GB511311A (en) Improvements in electrical systems of remote control
GB540071A (en) Improvements in or relating to electrical signalling circuits
GB438051A (en) Method of electrically intensifying signals from light impulses and apparatus therefor
GB597108A (en) Improvements in electrical control and/or signal systems
GB516429A (en) Improvements in or relating to electro-magnetic relays
GB435464A (en) Improvements in or relating to the electric remote control of apparatus over power mains