GB415767A - Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors - Google Patents

Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors

Info

Publication number
GB415767A
GB415767A GB6227/33A GB622733A GB415767A GB 415767 A GB415767 A GB 415767A GB 6227/33 A GB6227/33 A GB 6227/33A GB 622733 A GB622733 A GB 622733A GB 415767 A GB415767 A GB 415767A
Authority
GB
United Kingdom
Prior art keywords
current
transformer
attenuation
grid
network
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
GB6227/33A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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
Priority to NL39810D priority Critical patent/NL39810C/xx
Priority to BE401674D priority patent/BE401674A/xx
Application filed by Individual filed Critical Individual
Priority to GB6227/33A priority patent/GB415767A/en
Priority to GB24310/34A priority patent/GB416372A/en
Priority to US711922A priority patent/US1992774A/en
Priority to DEG87523D priority patent/DE672795C/de
Priority to FR769401D priority patent/FR769401A/fr
Publication of GB415767A publication Critical patent/GB415767A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB6227/33A 1933-03-01 1933-03-01 Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors Expired GB415767A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL39810D NL39810C (enrdf_load_stackoverflow) 1933-03-01
BE401674D BE401674A (enrdf_load_stackoverflow) 1933-03-01
GB6227/33A GB415767A (en) 1933-03-01 1933-03-01 Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors
GB24310/34A GB416372A (en) 1933-03-01 1933-03-01 Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems
US711922A US1992774A (en) 1933-03-01 1934-02-19 Alternating current transmission system such as telephone systems incorporating echosuppressors
DEG87523D DE672795C (de) 1933-03-01 1934-02-25 Signaluebertragungsanlage mit zwei UEbertragungswegen, in die von den Signalstroemen gesteuerte Sperrvorrichtungen eingeschaltet sind
FR769401D FR769401A (fr) 1933-03-01 1934-02-27 Suppresseur d'écho pour circuits électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6227/33A GB415767A (en) 1933-03-01 1933-03-01 Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors

Publications (1)

Publication Number Publication Date
GB415767A true GB415767A (en) 1934-09-03

Family

ID=9810720

Family Applications (2)

Application Number Title Priority Date Filing Date
GB24310/34A Expired GB416372A (en) 1933-03-01 1933-03-01 Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems
GB6227/33A Expired GB415767A (en) 1933-03-01 1933-03-01 Improvements in alternating current transmission systems such as telephone systems incorporating echo suppressors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB24310/34A Expired GB416372A (en) 1933-03-01 1933-03-01 Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems

Country Status (6)

Country Link
US (1) US1992774A (enrdf_load_stackoverflow)
BE (1) BE401674A (enrdf_load_stackoverflow)
DE (1) DE672795C (enrdf_load_stackoverflow)
FR (1) FR769401A (enrdf_load_stackoverflow)
GB (2) GB416372A (enrdf_load_stackoverflow)
NL (1) NL39810C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875051C (de) * 1938-04-28 1953-04-30 Western Electric Co Signaluebertragungsanlage

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882420C (de) * 1938-04-12 1953-07-09 Siemens Ag Schaltungsanordnung fuer Rueckkopplungssperren in Lautfernsprechanlagen
GB561405A (en) * 1942-11-14 1944-05-18 Automatic Telephone & Elect Improvements in or relating to telecommunication systems
US2511468A (en) * 1945-01-15 1950-06-13 Telephone Mfg Co Ltd Electrical control network
DE842503C (de) * 1948-12-09 1952-06-26 Rudolf Wagner Schaltungsanordnung zur Steuerung des UEbertragungsgrades von Fernmeldeanlagen
DE849572C (de) * 1948-12-09 1952-09-15 Rudolf Wagner Schaltungsanordnung zur Steuerung des UEbertragungsgrades von Fernmeldeanlagen
US2949579A (en) * 1957-12-27 1960-08-16 Mc Graw Edison Co Transistor amplifier with a.v.c.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875051C (de) * 1938-04-28 1953-04-30 Western Electric Co Signaluebertragungsanlage

Also Published As

Publication number Publication date
FR769401A (fr) 1934-08-25
GB416372A (en) 1934-09-03
BE401674A (enrdf_load_stackoverflow)
NL39810C (enrdf_load_stackoverflow)
DE672795C (de) 1939-03-10
US1992774A (en) 1935-02-26

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