JPS578452A - Current and voltage sensor - Google Patents

Current and voltage sensor

Info

Publication number
JPS578452A
JPS578452A JP8427980A JP8427980A JPS578452A JP S578452 A JPS578452 A JP S578452A JP 8427980 A JP8427980 A JP 8427980A JP 8427980 A JP8427980 A JP 8427980A JP S578452 A JPS578452 A JP S578452A
Authority
JP
Japan
Prior art keywords
polarized light
current
voltage
light
linearly polarized
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
JP8427980A
Other languages
Japanese (ja)
Inventor
Yoshinobu Tsujimoto
Osamu Kamata
Tetsuo Taniuchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8427980A priority Critical patent/JPS578452A/en
Publication of JPS578452A publication Critical patent/JPS578452A/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
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices

Abstract

PURPOSE:To make a titled sensor small in size and light in weight and make it strong to vibration and impact by providing a magnetooptic element, an electrooptic element, a polarizing element and a wavelength plate in one piece on a common substrate. CONSTITUTION:The light transmitted through a polarizing element 2 grown epitaxially on a substrate crystal 1 is made into the linearly polarized light polarized in the direction parallel with the substrate. This polarized light enters a magnetooptic element 3, by which it is subjected to the rotation of the plane of polarization by the amount proportional to the magnetic field based on current (i), thence it enters an electrooptic element 4. The voltage to be measured is applied to the electrodes provided on both side surfaces of a waveguide type electrooptic element 4 and the linearly polarized light is elliptically polarized according to the applied voltage. This polarized light is again returned to linearly polarized light by a lambda/4 plate 5. The total of the amounts of rotation of these planes of polarization is detected with an analyzer 2', to detect electric power. Thereby, the sensors having uniform characteristics are obtained in a large quantity and since the controlling of sizes and shapes is easily accomplished, the measuring range of current and voltage is selected freely.
JP8427980A 1980-06-20 1980-06-20 Current and voltage sensor Pending JPS578452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8427980A JPS578452A (en) 1980-06-20 1980-06-20 Current and voltage sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8427980A JPS578452A (en) 1980-06-20 1980-06-20 Current and voltage sensor

Publications (1)

Publication Number Publication Date
JPS578452A true JPS578452A (en) 1982-01-16

Family

ID=13826006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8427980A Pending JPS578452A (en) 1980-06-20 1980-06-20 Current and voltage sensor

Country Status (1)

Country Link
JP (1) JPS578452A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6319572A (en) * 1986-07-12 1988-01-27 Fujikura Ltd Magnetic sensor
JPS63229383A (en) * 1987-03-18 1988-09-26 Matsushita Electric Ind Co Ltd Optical sensor
CN101782605A (en) * 2009-01-15 2010-07-21 徐启峰 Digital diaphragm-vibrating type current sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6319572A (en) * 1986-07-12 1988-01-27 Fujikura Ltd Magnetic sensor
JPS63229383A (en) * 1987-03-18 1988-09-26 Matsushita Electric Ind Co Ltd Optical sensor
CN101782605A (en) * 2009-01-15 2010-07-21 徐启峰 Digital diaphragm-vibrating type current sensor

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