JPS5580930A - Circuit to close remote feeding loop in disconnection of coaxial cable transmission line - Google Patents

Circuit to close remote feeding loop in disconnection of coaxial cable transmission line

Info

Publication number
JPS5580930A
JPS5580930A JP15416378A JP15416378A JPS5580930A JP S5580930 A JPS5580930 A JP S5580930A JP 15416378 A JP15416378 A JP 15416378A JP 15416378 A JP15416378 A JP 15416378A JP S5580930 A JPS5580930 A JP S5580930A
Authority
JP
Japan
Prior art keywords
disconnection
contact
relay
circuit
thyristor
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
JP15416378A
Other languages
Japanese (ja)
Inventor
Hikari Hasegawa
Junji Funatsu
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP15416378A priority Critical patent/JPS5580930A/en
Publication of JPS5580930A publication Critical patent/JPS5580930A/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)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To secure closure of the remote feeding loop in case the disconnection occurs at the fixed section by detecting the disconnection via the relay. CONSTITUTION:The circuit which detects the disconnection and then closes the remote loop is connected between the going and coming-back repeater stations. When the disconnection occurs between the repeater stations, the relay within the repeater station becomes insensitive. And thus contact 22 switches to contact (a). Then capacitor 27 which is charged until the disconnection occurs is discharged via the closed circuit comprising break contact 21, transfer contact 22, relay 23 and capacitor 27 each. Thus relay 23 is excited to release contact 21. As a result, the release is secured between the cathode and the anode of thyristor 26 with the ignition given to thyristor 26. Thus the remote feed current flows to the circuit reaching connection point P4 through resistance 25, thyristor 26, contact 22 and relay 23 from connection point P3.
JP15416378A 1978-12-15 1978-12-15 Circuit to close remote feeding loop in disconnection of coaxial cable transmission line Pending JPS5580930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15416378A JPS5580930A (en) 1978-12-15 1978-12-15 Circuit to close remote feeding loop in disconnection of coaxial cable transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15416378A JPS5580930A (en) 1978-12-15 1978-12-15 Circuit to close remote feeding loop in disconnection of coaxial cable transmission line

Publications (1)

Publication Number Publication Date
JPS5580930A true JPS5580930A (en) 1980-06-18

Family

ID=15578202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15416378A Pending JPS5580930A (en) 1978-12-15 1978-12-15 Circuit to close remote feeding loop in disconnection of coaxial cable transmission line

Country Status (1)

Country Link
JP (1) JPS5580930A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536592U (en) * 1991-10-14 1993-05-18 綜合警備保障株式会社 Human body detector with voice message function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536592U (en) * 1991-10-14 1993-05-18 綜合警備保障株式会社 Human body detector with voice message function

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