JPS5593340A - Failure detector - Google Patents

Failure detector

Info

Publication number
JPS5593340A
JPS5593340A JP194279A JP194279A JPS5593340A JP S5593340 A JPS5593340 A JP S5593340A JP 194279 A JP194279 A JP 194279A JP 194279 A JP194279 A JP 194279A JP S5593340 A JPS5593340 A JP S5593340A
Authority
JP
Japan
Prior art keywords
amplifiers
differential amplifier
comparators
inputted
branched
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.)
Granted
Application number
JP194279A
Other languages
Japanese (ja)
Other versions
JPS6227576B2 (en
Inventor
Toshio Asai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP194279A priority Critical patent/JPS5593340A/en
Publication of JPS5593340A publication Critical patent/JPS5593340A/en
Publication of JPS6227576B2 publication Critical patent/JPS6227576B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To enable to detect failures at high speed and accuracy by respectively detecting the output power of the electric circuits having almost the same performance and comparing the detected output voltages. CONSTITUTION:The input signal S0 is branched at the signal branch circuit 10 and inputted to the amplifiers 11, 12 having almost the same performance. A part of the output power of the amplifiers 11, 12 is branched at the branch circuits 13, 14 and it is inputted to the differential amplifier 17 via the detectors 15, 16 and equalizers 20, 21. When the amplifiers 11, 12 are normally operated, the input voltage difference of the differential amplifier 17 is small and the output voltage is in balanced state, then the comparators 18, 19 are inoperative. If either of the amplifier 11 or 12 is in failure, a difference is caused to the input voltage of the differential amplifier 17, either one of the output voltages D1, D2 of the comparators 18, 19 is changed to detect failure.
JP194279A 1979-01-09 1979-01-09 Failure detector Granted JPS5593340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP194279A JPS5593340A (en) 1979-01-09 1979-01-09 Failure detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP194279A JPS5593340A (en) 1979-01-09 1979-01-09 Failure detector

Publications (2)

Publication Number Publication Date
JPS5593340A true JPS5593340A (en) 1980-07-15
JPS6227576B2 JPS6227576B2 (en) 1987-06-16

Family

ID=11515659

Family Applications (1)

Application Number Title Priority Date Filing Date
JP194279A Granted JPS5593340A (en) 1979-01-09 1979-01-09 Failure detector

Country Status (1)

Country Link
JP (1) JPS5593340A (en)

Also Published As

Publication number Publication date
JPS6227576B2 (en) 1987-06-16

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