JPS57176430A - Current detector - Google Patents

Current detector

Info

Publication number
JPS57176430A
JPS57176430A JP6137081A JP6137081A JPS57176430A JP S57176430 A JPS57176430 A JP S57176430A JP 6137081 A JP6137081 A JP 6137081A JP 6137081 A JP6137081 A JP 6137081A JP S57176430 A JPS57176430 A JP S57176430A
Authority
JP
Japan
Prior art keywords
signal converter
low voltage
signal
power supply
electrooptic
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
JP6137081A
Other languages
Japanese (ja)
Inventor
Kazuhiko Murabayashi
Takuji Hanaoka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6137081A priority Critical patent/JPS57176430A/en
Publication of JPS57176430A publication Critical patent/JPS57176430A/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)
  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE:To achieve the current detection of a high voltage device through components for low voltage circuits, by detecting an actual value of complicated waveform AC currents through the adoption of an electrooptic signal converter or the like and insulating the high and low voltage sections. CONSTITUTION:An output signal of a shunting device 12 has a waveform of an AC power supply 10. This is amplified and an electrooptic signal converter 16 is driven. The obtained optical signal is transmitted to the low voltage side with a light guide 17 and converted into an electric signal at a photoelectric signal converter 18, and the waveforms at the positive and negative periods are synthesized and the actual value of the AC current is obtained. The power supply for an amplifier 15 energizing the photoelectric signal converter is supplied from a rectifying circuit 14.
JP6137081A 1981-04-24 1981-04-24 Current detector Pending JPS57176430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6137081A JPS57176430A (en) 1981-04-24 1981-04-24 Current detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6137081A JPS57176430A (en) 1981-04-24 1981-04-24 Current detector

Publications (1)

Publication Number Publication Date
JPS57176430A true JPS57176430A (en) 1982-10-29

Family

ID=13169209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6137081A Pending JPS57176430A (en) 1981-04-24 1981-04-24 Current detector

Country Status (1)

Country Link
JP (1) JPS57176430A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102749501A (en) * 2012-08-01 2012-10-24 电子科技大学 Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102749501A (en) * 2012-08-01 2012-10-24 电子科技大学 Isolated direct current high voltage detection method and isolated direct current high voltage detection circuit

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