GB228570A - Improvements in telephone repeater systems - Google Patents

Improvements in telephone repeater systems

Info

Publication number
GB228570A
GB228570A GB2833/25A GB283325A GB228570A GB 228570 A GB228570 A GB 228570A GB 2833/25 A GB2833/25 A GB 2833/25A GB 283325 A GB283325 A GB 283325A GB 228570 A GB228570 A GB 228570A
Authority
GB
United Kingdom
Prior art keywords
crosscoupling
coupling
grid circuit
repeater systems
telephone repeater
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
GB2833/25A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB228570A publication Critical patent/GB228570A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

228,570. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitats Ges.). Feb. 2,1924, [Convention date]. Repeating and amplifying systems.-In a twoway two-wire thermionic repeater system, back coupling is avoided without the use of balancing networks by coupling the anode circuit of each valve to the grid circuit of the other in such a way that, by means of a variable resistance W, the currents in the grid circuit due to the crosscoupling N1<SP>1> are made equal and opposite to those induced through the transformer V<2>. The crosscoupling may be inductive as shown or capacitative. Specifications 21069/11 and 180,700 are referred to.
GB2833/25A 1924-02-02 1925-01-31 Improvements in telephone repeater systems Expired GB228570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE228570X 1924-02-02

Publications (1)

Publication Number Publication Date
GB228570A true GB228570A (en) 1925-06-25

Family

ID=5867282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2833/25A Expired GB228570A (en) 1924-02-02 1925-01-31 Improvements in telephone repeater systems

Country Status (1)

Country Link
GB (1) GB228570A (en)

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