JPS5575353A - Feed switching circuit - Google Patents

Feed switching circuit

Info

Publication number
JPS5575353A
JPS5575353A JP14911678A JP14911678A JPS5575353A JP S5575353 A JPS5575353 A JP S5575353A JP 14911678 A JP14911678 A JP 14911678A JP 14911678 A JP14911678 A JP 14911678A JP S5575353 A JPS5575353 A JP S5575353A
Authority
JP
Japan
Prior art keywords
board
feeding
load
dispatching
boards
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.)
Pending
Application number
JP14911678A
Other languages
Japanese (ja)
Inventor
Yoshihiko Miyano
Takeo Kusama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14911678A priority Critical patent/JPS5575353A/en
Publication of JPS5575353A publication Critical patent/JPS5575353A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

PURPOSE:To reduce greatly the time for switching of the feeding direction by securing the selective connection for the several types of load-dispatching boards containing the feeding function each to the plugs of the load-dispatching boards of the upper and lower station sides and then carrying out switching of the feeding direction. CONSTITUTION:In case the feed is given to junction boards 1 and 2 within the transmission line from the load-dispatching station, several types of load-dispatching boards containing the feeding function or the trapping function are connected selectively to plugs 11 and 21 of the load-dispatching boards of the upper and lower stations in order to carry out the switching of the feeding direction from the load- dispatching station. In other words, if load-dispatching boards 6a and 6b are connected to plugs 11 and 21 of boards 1 and 2, the feeding type of Fig. (a) is obtained. At the same time, the feeding type of Fig. (b) is obtained in case through- board 7a is connected to plug 21 of feeding intra-office junction board 2 along with board 6b connected to plug 11 of board 1. While the feeding type of Fig. (c) is secured with through-board 7b connected to plug 11 of board 1 plus board 6a connected to plug 21 of board 2 respectively. In such way, the time can be reduced greatly for switching of the feeding methods.
JP14911678A 1978-12-04 1978-12-04 Feed switching circuit Pending JPS5575353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14911678A JPS5575353A (en) 1978-12-04 1978-12-04 Feed switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14911678A JPS5575353A (en) 1978-12-04 1978-12-04 Feed switching circuit

Publications (1)

Publication Number Publication Date
JPS5575353A true JPS5575353A (en) 1980-06-06

Family

ID=15468056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14911678A Pending JPS5575353A (en) 1978-12-04 1978-12-04 Feed switching circuit

Country Status (1)

Country Link
JP (1) JPS5575353A (en)

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