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GB292096A - Improvements in loading systems for telephone lines or the like - Google Patents

Improvements in loading systems for telephone lines or the like

Info

Publication number
GB292096A
GB292096A GB14377/28A GB1437728A GB292096A GB 292096 A GB292096 A GB 292096A GB 14377/28 A GB14377/28 A GB 14377/28A GB 1437728 A GB1437728 A GB 1437728A GB 292096 A GB292096 A GB 292096A
Authority
GB
United Kingdom
Prior art keywords
line
coils
condensers
loaded
loading
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
GB14377/28A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB292096A publication Critical patent/GB292096A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/26—Improving frequency characteristic by the use of loading coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

292,096. Standard Telephones & Cables, Ltd., (Assignees of Shea, T. E.). June 13, 1927, [Convention date]. Drawings to Specification. Loading circuits to improve transmission.- Loading units comprising inductance coils and condensers in parallel with one another are connected in each conductor of a line, the coils and condensers being so proportioned that the resultant impedance is substantially a constant resistance throughout the transmission range. If the line is terminated at the mid-point of such a unit, it may be associated with terminal apparatus without introducing reflection losses. The terminal sections only of a line may be loaded with such units, the intermediate section being loaded with Pupin coils in the usual manner. Specification 135/94 is referred to.
GB14377/28A 1927-06-13 1928-05-16 Improvements in loading systems for telephone lines or the like Expired GB292096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US198459A US1772558A (en) 1927-06-13 1927-06-13 Loading system

Publications (1)

Publication Number Publication Date
GB292096A true GB292096A (en) 1929-06-20

Family

ID=22733472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14377/28A Expired GB292096A (en) 1927-06-13 1928-05-16 Improvements in loading systems for telephone lines or the like

Country Status (4)

Country Link
US (1) US1772558A (en)
BE (1) BE351381A (en)
FR (1) FR655498A (en)
GB (1) GB292096A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496292A (en) * 1965-08-31 1970-02-17 Eric Waldelius Impedance correcting coil-loaded circuits

Also Published As

Publication number Publication date
US1772558A (en) 1930-08-12
FR655498A (en) 1929-04-19
BE351381A (en)

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