GB342799A - Improvements in or relating to telephone transmission or like systems - Google Patents

Improvements in or relating to telephone transmission or like systems

Info

Publication number
GB342799A
GB342799A GB3470229A GB3470229A GB342799A GB 342799 A GB342799 A GB 342799A GB 3470229 A GB3470229 A GB 3470229A GB 3470229 A GB3470229 A GB 3470229A GB 342799 A GB342799 A GB 342799A
Authority
GB
United Kingdom
Prior art keywords
relating
systems
telephone transmission
merivale
durning
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
GB3470229A
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 Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing 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 Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Priority to GB3470229A priority Critical patent/GB342799A/en
Publication of GB342799A publication Critical patent/GB342799A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/145—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers variable equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Filters And Equalizers (AREA)

Abstract

342,799. Correcting distortion. AUTOMATIC TELEPHONE MANUFACTURING CO., Ltd., Strowger Works, and SMITH, J., 9, Merivale Street, Durning Road, both in Liverpool. Nov. 13, 1929, No. 34702. [Class 40 (iv).] An attenuation equalizer incorporated in the input of an amplifier or between amplifiers comprises a differential transformer having two secondary windings T2, T3, the balanced terminals of which are connected to an adjustable resistance or impedance A1 and to a capacity C in the manner shown to form parallel circuits.
GB3470229A 1929-11-13 1929-11-13 Improvements in or relating to telephone transmission or like systems Expired GB342799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3470229A GB342799A (en) 1929-11-13 1929-11-13 Improvements in or relating to telephone transmission or like systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3470229A GB342799A (en) 1929-11-13 1929-11-13 Improvements in or relating to telephone transmission or like systems

Publications (1)

Publication Number Publication Date
GB342799A true GB342799A (en) 1931-02-12

Family

ID=10368894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3470229A Expired GB342799A (en) 1929-11-13 1929-11-13 Improvements in or relating to telephone transmission or like systems

Country Status (1)

Country Link
GB (1) GB342799A (en)

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