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JPS5630334A - Light-relay supervising circuit - Google Patents

Light-relay supervising circuit

Info

Publication number
JPS5630334A
JPS5630334A JP10550479A JP10550479A JPS5630334A JP S5630334 A JPS5630334 A JP S5630334A JP 10550479 A JP10550479 A JP 10550479A JP 10550479 A JP10550479 A JP 10550479A JP S5630334 A JPS5630334 A JP S5630334A
Authority
JP
Japan
Prior art keywords
shutter
circuit
relay
photoshutter
photoswitch
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
JP10550479A
Other languages
Japanese (ja)
Inventor
Yasuhiko Niino
Hiroharu Wakabayashi
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP10550479A priority Critical patent/JPS5630334A/en
Publication of JPS5630334A publication Critical patent/JPS5630334A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To improve the reliability by attaining a fail-safe function by cutting off a sending-back loop by stopping electric power supply to a system even if a supervising circuit gets out of order. CONSTITUTION:A discrimination signal characteristic to relay 2 is supplied to the driving system consisting of filter 16, AC amplifier 17, detector 18, DC amplifier 19, and differentiating circuit 20 and driving coil 10 of photoswitch 8 is driven by the differential output of the above-mentioned circuit. Although shutter 11 of photoswitch 8 is normally open by release spring 12, photoshutter 11 is normally opened by being driven by driving coil 10. At this time, feeding electric current to lock coil 15 locks photoshutter 11 by clock lever 14 and then the shutter stays open. In case of an accident such as the continuation of the output of the above- mentioned 19, the electric power supply to the system is stopped to unlock the shutter, which is closed in consequence.
JP10550479A 1979-08-21 1979-08-21 Light-relay supervising circuit Pending JPS5630334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10550479A JPS5630334A (en) 1979-08-21 1979-08-21 Light-relay supervising circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10550479A JPS5630334A (en) 1979-08-21 1979-08-21 Light-relay supervising circuit

Publications (1)

Publication Number Publication Date
JPS5630334A true JPS5630334A (en) 1981-03-26

Family

ID=14409423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10550479A Pending JPS5630334A (en) 1979-08-21 1979-08-21 Light-relay supervising circuit

Country Status (1)

Country Link
JP (1) JPS5630334A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189201A (en) * 1992-03-25 1993-02-23 Showa Denko K.K. Process for preparation of lower fatty acid ester
US5241106A (en) * 1991-10-22 1993-08-31 Mitsui Toatsu Chemicals, Inc. Process for producing ethyl acetate
JP2008271787A (en) * 2007-04-25 2008-11-13 Toyota Motor Corp Method for decomposing plant fiber materials
US8409356B2 (en) 2008-06-03 2013-04-02 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material
US8460471B2 (en) 2008-06-03 2013-06-11 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material
US8460472B2 (en) 2008-06-03 2013-06-11 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material
US8486197B2 (en) 2007-09-05 2013-07-16 Toyota Jidosha Kabushiki Kaisha Method of saccharification and separation for plant fiber materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241106A (en) * 1991-10-22 1993-08-31 Mitsui Toatsu Chemicals, Inc. Process for producing ethyl acetate
US5189201A (en) * 1992-03-25 1993-02-23 Showa Denko K.K. Process for preparation of lower fatty acid ester
JP2008271787A (en) * 2007-04-25 2008-11-13 Toyota Motor Corp Method for decomposing plant fiber materials
US8382905B2 (en) 2007-04-25 2013-02-26 Toyota Jidosha Kabushiki Kaisha Plant-fiber-material transformation method
US8486197B2 (en) 2007-09-05 2013-07-16 Toyota Jidosha Kabushiki Kaisha Method of saccharification and separation for plant fiber materials
US8409356B2 (en) 2008-06-03 2013-04-02 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material
US8460471B2 (en) 2008-06-03 2013-06-11 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material
US8460472B2 (en) 2008-06-03 2013-06-11 Toyota Jidosha Kabushiki Kaisha Method for glycosylating and separating plant fiber material

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