GB169691A - Improvements in high frequency telegraphy and telephony - Google Patents

Improvements in high frequency telegraphy and telephony

Info

Publication number
GB169691A
GB169691A GB23437/21A GB2343721A GB169691A GB 169691 A GB169691 A GB 169691A GB 23437/21 A GB23437/21 A GB 23437/21A GB 2343721 A GB2343721 A GB 2343721A GB 169691 A GB169691 A GB 169691A
Authority
GB
United Kingdom
Prior art keywords
frequency
high frequency
inductance
telephony
resistance
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
GB23437/21A
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication of GB169691A publication Critical patent/GB169691A/en
Expired legal-status Critical Current

Links

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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transmitters (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

169,691. Ges. fiir Drahtlose Telegraphie, and Gewecke, H. Sept. 29, 1920, [Convention date]. Wired wireless systems. -In signalling systems in which signals are conveyed over pow.er conductors by high-frequency currents, ohmic resistances 2 equal in value to the high-frequency resistance of the line are connected between two phases of the conductor system, or between a single conductor 1 and earth 5. In order that the power currents may not pass across the shunt, a condenser 3 and inductance 4 are connected in series with the resistance 2, and are tuned to the high frequency. The inductance 4 may be used for coupling the high-frequency apparatus 6.
GB23437/21A 1919-05-29 1921-09-02 Improvements in high frequency telegraphy and telephony Expired GB169691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE353373T 1919-05-29

Publications (1)

Publication Number Publication Date
GB169691A true GB169691A (en) 1922-12-04

Family

ID=33480561

Family Applications (4)

Application Number Title Priority Date Filing Date
GB19378/20A Expired GB147464A (en) 1919-05-29 1920-07-07 Improvements in telegraphy and telephony signalling systems
GB19350/20A Expired GB147447A (en) 1919-05-29 1920-07-07 Improvements in or relating to the conveyance and distribution of high frequency electric currents
GB29931/20A Expired GB154884A (en) 1919-05-29 1920-10-22 Improvements in or relating to the transmission of high frequency oscillations over high power conductors for high frequency telegraphy and telephony
GB23437/21A Expired GB169691A (en) 1919-05-29 1921-09-02 Improvements in high frequency telegraphy and telephony

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB19378/20A Expired GB147464A (en) 1919-05-29 1920-07-07 Improvements in telegraphy and telephony signalling systems
GB19350/20A Expired GB147447A (en) 1919-05-29 1920-07-07 Improvements in or relating to the conveyance and distribution of high frequency electric currents
GB29931/20A Expired GB154884A (en) 1919-05-29 1920-10-22 Improvements in or relating to the transmission of high frequency oscillations over high power conductors for high frequency telegraphy and telephony

Country Status (2)

Country Link
DE (1) DE353373C (en)
GB (4) GB147464A (en)

Also Published As

Publication number Publication date
GB147464A (en) 1921-11-07
GB154884A (en) 1921-11-17
GB147447A (en) 1921-04-07
DE353373C (en) 1922-05-16

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