JPS5530208A - Relay operation discrimination system - Google Patents

Relay operation discrimination system

Info

Publication number
JPS5530208A
JPS5530208A JP10269578A JP10269578A JPS5530208A JP S5530208 A JPS5530208 A JP S5530208A JP 10269578 A JP10269578 A JP 10269578A JP 10269578 A JP10269578 A JP 10269578A JP S5530208 A JPS5530208 A JP S5530208A
Authority
JP
Japan
Prior art keywords
relay
contact
resistor
relay operation
discrimination system
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
JP10269578A
Other languages
Japanese (ja)
Inventor
Musao Naka
Akira Nishiharaguchi
Haruo Katayama
Kazunori Katsuno
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.)
Nippon Telegraph and Telephone Corp
Ohkura Electric Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Ohkura Electric 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 Nippon Telegraph and Telephone Corp, Ohkura Electric Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10269578A priority Critical patent/JPS5530208A/en
Publication of JPS5530208A publication Critical patent/JPS5530208A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To make it possible to discrimanate the operation of a relay by detecting the discontinuance of a current by intermitting the operation of the relay in a system which tests a circuit by remotely operating the relay and by folding the transmission circuit by the contact of this relay. CONSTITUTION:Between transvormers 8 and 9, resistor 13 connected in series to relay 7, the other contact 12 of which is also connected in parallel to resistor 13. With switch 5 ON, relay 7 operates to change its contacts 10 and 11 over and contact 12 is made to short resistor 13, so that telephone 1 will vary discontinuously. If relay 7 does not operate, the variation of a current has no discontinuous point. Therefore, it can be discriminated whether relay 7 has operated or not, by detecting by ammeter 14 whether the discontinuous point is generated or not.
JP10269578A 1978-08-25 1978-08-25 Relay operation discrimination system Pending JPS5530208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10269578A JPS5530208A (en) 1978-08-25 1978-08-25 Relay operation discrimination system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10269578A JPS5530208A (en) 1978-08-25 1978-08-25 Relay operation discrimination system

Publications (1)

Publication Number Publication Date
JPS5530208A true JPS5530208A (en) 1980-03-04

Family

ID=14334383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10269578A Pending JPS5530208A (en) 1978-08-25 1978-08-25 Relay operation discrimination system

Country Status (1)

Country Link
JP (1) JPS5530208A (en)

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