GB386764A - Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents - Google Patents

Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents

Info

Publication number
GB386764A
GB386764A GB3353931A GB3353931A GB386764A GB 386764 A GB386764 A GB 386764A GB 3353931 A GB3353931 A GB 3353931A GB 3353931 A GB3353931 A GB 3353931A GB 386764 A GB386764 A GB 386764A
Authority
GB
United Kingdom
Prior art keywords
transmitting
low frequency
london
electrical systems
pairs
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
GB3353931A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and 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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB3353931A priority Critical patent/GB386764A/en
Publication of GB386764A publication Critical patent/GB386764A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/30—Reducing interference caused by unbalanced currents in a normally balanced line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

386,764. Inductances. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, London, and GRINSTED, W. H., Under the Plane, London Lane, Bromley, Kent. Dec. 3, 1931, No. 33539. [Class 37.] Pairs of air-cored chokes for connection one in each leg of a transmission line sc that the combinatior is non-inductive as regards loop currents are wound with each turn of one as close as possible to the corresponding turn of the other, e.g. by using bifilar wire. As shown four pairs are formed as a single structure built up from thick and thin washers 16, 17 clamped between cheeks 15. The unit rests on stepped portions of the side walls of a pot 3 closed by a plate 12 provided with a pair of holes fitted with screw plugs, and a second pair, through which the line wires pass, having insulating bushes.
GB3353931A 1931-12-03 1931-12-03 Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents Expired GB386764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3353931A GB386764A (en) 1931-12-03 1931-12-03 Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3353931A GB386764A (en) 1931-12-03 1931-12-03 Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents

Publications (1)

Publication Number Publication Date
GB386764A true GB386764A (en) 1933-01-26

Family

ID=10354261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3353931A Expired GB386764A (en) 1931-12-03 1931-12-03 Improvements relating to electrical systems for transmitting and/or relaying speech or low frequency currents

Country Status (1)

Country Link
GB (1) GB386764A (en)

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