JPS56164962A - Current detecting circuit - Google Patents

Current detecting circuit

Info

Publication number
JPS56164962A
JPS56164962A JP6984280A JP6984280A JPS56164962A JP S56164962 A JPS56164962 A JP S56164962A JP 6984280 A JP6984280 A JP 6984280A JP 6984280 A JP6984280 A JP 6984280A JP S56164962 A JPS56164962 A JP S56164962A
Authority
JP
Japan
Prior art keywords
current
measured
amplifier
supplied
detecting
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
JP6984280A
Other languages
Japanese (ja)
Inventor
Shigeaki Wachi
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP6984280A priority Critical patent/JPS56164962A/en
Publication of JPS56164962A publication Critical patent/JPS56164962A/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
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/205—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using magneto-resistance devices, e.g. field plates

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To make detection possible with high accuracy, low losses and ease by detecting the megnetic flux generated by the current to be measured, feeding the DC current corresponding to the quantity of said magnetic flux to a control winding, and detecting this current as the current corresponding to the current to be measured. CONSTITUTION:A control winding 3 wound by as much as prescribed number of windings is disposed to an iron core 3 in such a manner as to become the phase reverse from that of the load current of a conductor 1. One end of the winding 3 is connected to the output side of a current amplifier 4 and the other end is grounded via a resistance 5. The voltage divided by resistances 6, 7 is supplied as reference voltage to the one input terminal of the amplifier 4 and the voltage corresponding to the quantity of magnetic flux by the load current detected with a magnetoresistance element 8 such as ''Sony Magnet Diode '' is supplied to the other. In the element 8, two elements 8a, 8b of uniform temp. characteristics are connected in series by reversing their polarities with respect to the magnetic field. Thereby, desired current is detected easily at low losses in spite of the large current to be measured.
JP6984280A 1980-05-26 1980-05-26 Current detecting circuit Pending JPS56164962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6984280A JPS56164962A (en) 1980-05-26 1980-05-26 Current detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6984280A JPS56164962A (en) 1980-05-26 1980-05-26 Current detecting circuit

Publications (1)

Publication Number Publication Date
JPS56164962A true JPS56164962A (en) 1981-12-18

Family

ID=13414453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6984280A Pending JPS56164962A (en) 1980-05-26 1980-05-26 Current detecting circuit

Country Status (1)

Country Link
JP (1) JPS56164962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124562U (en) * 1986-01-31 1987-08-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62124562U (en) * 1986-01-31 1987-08-07

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