GB207852A - A method of and means for distinguishing between opposite directions of electrical energy flow - Google Patents

A method of and means for distinguishing between opposite directions of electrical energy flow

Info

Publication number
GB207852A
GB207852A GB23771/22A GB2377122A GB207852A GB 207852 A GB207852 A GB 207852A GB 23771/22 A GB23771/22 A GB 23771/22A GB 2377122 A GB2377122 A GB 2377122A GB 207852 A GB207852 A GB 207852A
Authority
GB
United Kingdom
Prior art keywords
line
opposite directions
energy
energy flow
distinguishing
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
GB23771/22A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority to US1505275D priority Critical patent/US1505275A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to GB23771/22A priority patent/GB207852A/en
Publication of GB207852A publication Critical patent/GB207852A/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)
  • Interface Circuits In Exchanges (AREA)

Abstract

207,852. Western Electric Co., Ltd., (Western Electric Co., Inc.). Sept. 1, 1922. Current-direction indicators. -Opposite directions of energy flow in a line are distinguished by alterning the characteristic between the two spaced points in the line and balancing the energy derived from one point against that derived from the other. The Figure shows relays in a telephone repeater station which are caused to distinguish between opposite directions of energy flow by the insertion of attenuating networks 21, 22 in the line. Each relay is provided with two windings 15, 16 so arranged that energy appearing in the line L, W causes winding 15 to predominate over winding 16 and close contact 11, while energy appearing in line L, E will close contact 12. Electromagnets 5 - - 8 are controlled by the contacts 11, 12 and operate switches 1 - - 4 which connect the input 32 of the repeater R to the incoming line and the output 33 to the outgoing line.
GB23771/22A 1922-09-01 1922-09-01 A method of and means for distinguishing between opposite directions of electrical energy flow Expired GB207852A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US1505275D US1505275A (en) 1922-09-01 Operating alternating-current relays
GB23771/22A GB207852A (en) 1922-09-01 1922-09-01 A method of and means for distinguishing between opposite directions of electrical energy flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23771/22A GB207852A (en) 1922-09-01 1922-09-01 A method of and means for distinguishing between opposite directions of electrical energy flow

Publications (1)

Publication Number Publication Date
GB207852A true GB207852A (en) 1923-12-03

Family

ID=10201049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23771/22A Expired GB207852A (en) 1922-09-01 1922-09-01 A method of and means for distinguishing between opposite directions of electrical energy flow

Country Status (2)

Country Link
US (1) US1505275A (en)
GB (1) GB207852A (en)

Also Published As

Publication number Publication date
US1505275A (en) 1924-08-19

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