JPS57199961A - Noncontact type current sensor device - Google Patents

Noncontact type current sensor device

Info

Publication number
JPS57199961A
JPS57199961A JP8726581A JP8726581A JPS57199961A JP S57199961 A JPS57199961 A JP S57199961A JP 8726581 A JP8726581 A JP 8726581A JP 8726581 A JP8726581 A JP 8726581A JP S57199961 A JPS57199961 A JP S57199961A
Authority
JP
Japan
Prior art keywords
current
photodiodes
reception part
sensor device
current sensor
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
JP8726581A
Other languages
Japanese (ja)
Inventor
Giichi Shibuya
Yukio Fujiwara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8726581A priority Critical patent/JPS57199961A/en
Publication of JPS57199961A publication Critical patent/JPS57199961A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To simplify constitution by composing a reception part of a couple of photodiodes connected to a plus and a minus power source and an output resistance, and thus eliminating the need for a differential amplifier which was used as an active element conventionally at the reception part. CONSTITUTION:When a current (i) flows through a sensor part 1, light emitting diodes 3a and 3b turn on by the current (i) and their beams of light are guided to the photodiodes 4A and 4B of a reception part 2 through optical fibers 5a and 5b. The outputs of the photodiodes 4A and 4B connected to a plus and a minus power source are led to a common output resistance R, and the waveform of a voltage developed across the resistance R is led out as an output (v). Consequently, the same waveform as that of the current (i) of the sensor part 1 is outputted and a current flowing a point insulated from the ground is observed.
JP8726581A 1981-06-03 1981-06-03 Noncontact type current sensor device Pending JPS57199961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8726581A JPS57199961A (en) 1981-06-03 1981-06-03 Noncontact type current sensor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8726581A JPS57199961A (en) 1981-06-03 1981-06-03 Noncontact type current sensor device

Publications (1)

Publication Number Publication Date
JPS57199961A true JPS57199961A (en) 1982-12-08

Family

ID=13909931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8726581A Pending JPS57199961A (en) 1981-06-03 1981-06-03 Noncontact type current sensor device

Country Status (1)

Country Link
JP (1) JPS57199961A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014098A1 (en) * 1998-12-21 2000-06-28 Istituto Nazionale Di Fisica Nucleare Direct current meter with passive input and galvanic insulation, particularly for high voltage
WO2022210313A1 (en) * 2021-03-30 2022-10-06 アダマンド並木精密宝石株式会社 Current measurement device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1014098A1 (en) * 1998-12-21 2000-06-28 Istituto Nazionale Di Fisica Nucleare Direct current meter with passive input and galvanic insulation, particularly for high voltage
US6316930B1 (en) 1998-12-21 2001-11-13 Istito Nazionale Di Fisica Nucleare Direct current meter with passive input and galvanic insulation, particularly for high voltage
WO2022210313A1 (en) * 2021-03-30 2022-10-06 アダマンド並木精密宝石株式会社 Current measurement device

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