GB416372A - Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems - Google Patents

Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems

Info

Publication number
GB416372A
GB416372A GB24310/34A GB2431034A GB416372A GB 416372 A GB416372 A GB 416372A GB 24310/34 A GB24310/34 A GB 24310/34A GB 2431034 A GB2431034 A GB 2431034A GB 416372 A GB416372 A GB 416372A
Authority
GB
United Kingdom
Prior art keywords
systems
attenuation
telephone
relating
control
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
GB24310/34A
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
Application filed by Individual filed Critical Individual
Publication of GB416372A publication Critical patent/GB416372A/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)
GB24310/34A 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 Expired GB416372A (en)

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
GB416372A true GB416372A (en) 1934-09-03

Family

ID=9810720

Family Applications (2)

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

Family Applications Before (1)

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

Country Status (6)

Country Link
US (1) US1992774A (enEXAMPLES)
BE (1) BE401674A (enEXAMPLES)
DE (1) DE672795C (enEXAMPLES)
FR (1) FR769401A (enEXAMPLES)
GB (2) GB415767A (enEXAMPLES)
NL (1) NL39810C (enEXAMPLES)

Cited By (1)

* 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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164344A (en) * 1938-04-28 1939-07-04 Bell Telephone Labor Inc Signal transmission system
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
DE849572C (de) * 1948-12-09 1952-09-15 Rudolf Wagner Schaltungsanordnung zur Steuerung des UEbertragungsgrades von Fernmeldeanlagen
DE842503C (de) * 1948-12-09 1952-06-26 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
DE882420C (de) * 1938-04-12 1953-07-09 Siemens Ag Schaltungsanordnung fuer Rueckkopplungssperren in Lautfernsprechanlagen

Also Published As

Publication number Publication date
BE401674A (enEXAMPLES)
GB415767A (en) 1934-09-03
US1992774A (en) 1935-02-26
NL39810C (enEXAMPLES)
FR769401A (fr) 1934-08-25
DE672795C (de) 1939-03-10

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