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JPS57175928A - Adapter for photoelectric signal conversion - Google Patents

Adapter for photoelectric signal conversion

Info

Publication number
JPS57175928A
JPS57175928A JP56062731A JP6273181A JPS57175928A JP S57175928 A JPS57175928 A JP S57175928A JP 56062731 A JP56062731 A JP 56062731A JP 6273181 A JP6273181 A JP 6273181A JP S57175928 A JPS57175928 A JP S57175928A
Authority
JP
Japan
Prior art keywords
amplifier
output
light
adapter
comparator
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
JP56062731A
Other languages
Japanese (ja)
Inventor
Junichi Kato
Tadashi Inoue
Hideki Haru
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.)
Oi Electric Co Ltd
Original Assignee
Oi 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 Oi Electric Co Ltd filed Critical Oi Electric Co Ltd
Priority to JP56062731A priority Critical patent/JPS57175928A/en
Publication of JPS57175928A publication Critical patent/JPS57175928A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
    • G01D1/12—Measuring arrangements giving results other than momentary value of variable, of general application giving a maximum or minimum of a value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To measure the signal status at a check point without directly contacting the measuring terminal of a measuring device, by capturing the flashing of a light emitting element for monitoring the check point as a light signal, and converting the light signal to the electric signal. CONSTITUTION:An optical fiber 3 is attached to an adapter 4. One end of the fiber faces a light emitting diode 2 of an electronic equipment 1 to be measured or is connected to it. The light from the light emitting diode 2 is introduced into said optical fiber 3. The other end of the optical fiber 3 faces a light receiving element 5 in the adapter 4. The output of the light receiving element 5 is inputted to a variable gain amplifier 8 and amplifier 7 through an amplifier 6. The output of the amplifier 7 is inputted to a comparator 14 through a peak holding circuit 11 and compared with the reference voltage from a reference DC voltage source 12. The gain of the variable gain amplifier 8 is varied by the output of the comparator. The output of the amplifier is processed by a peak holding circuit 10 and comparator 13.
JP56062731A 1981-04-24 1981-04-24 Adapter for photoelectric signal conversion Pending JPS57175928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56062731A JPS57175928A (en) 1981-04-24 1981-04-24 Adapter for photoelectric signal conversion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56062731A JPS57175928A (en) 1981-04-24 1981-04-24 Adapter for photoelectric signal conversion

Publications (1)

Publication Number Publication Date
JPS57175928A true JPS57175928A (en) 1982-10-29

Family

ID=13208801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56062731A Pending JPS57175928A (en) 1981-04-24 1981-04-24 Adapter for photoelectric signal conversion

Country Status (1)

Country Link
JP (1) JPS57175928A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111277U (en) * 1983-12-16 1985-07-27 北海道電気技術サ−ビス株式会社 Measuring instrument drive device using optical detection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51145256A (en) * 1975-06-09 1976-12-14 Nippon Telegr & Teleph Corp <Ntt> Signal detecting circuit
JPS5427755A (en) * 1977-08-03 1979-03-02 Toshiba Corp Circuit testing equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51145256A (en) * 1975-06-09 1976-12-14 Nippon Telegr & Teleph Corp <Ntt> Signal detecting circuit
JPS5427755A (en) * 1977-08-03 1979-03-02 Toshiba Corp Circuit testing equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111277U (en) * 1983-12-16 1985-07-27 北海道電気技術サ−ビス株式会社 Measuring instrument drive device using optical detection

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