JPS56132570A - Dc current indicator - Google Patents

Dc current indicator

Info

Publication number
JPS56132570A
JPS56132570A JP3639780A JP3639780A JPS56132570A JP S56132570 A JPS56132570 A JP S56132570A JP 3639780 A JP3639780 A JP 3639780A JP 3639780 A JP3639780 A JP 3639780A JP S56132570 A JPS56132570 A JP S56132570A
Authority
JP
Japan
Prior art keywords
winding
current
circuit
square wave
changes
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
JP3639780A
Other languages
Japanese (ja)
Inventor
Takeo Kawasaki
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 JP3639780A priority Critical patent/JPS56132570A/en
Publication of JPS56132570A publication Critical patent/JPS56132570A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side

Landscapes

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

Abstract

PURPOSE:To detect minute electric current with a low power consumption by constructing a sensor section with an induction winding. CONSTITUTION:A magnetic field is generated by a current to be detected flowing through a signal winding 4b and a square wave current flowing through a driving winding 4c and changes the magnetic flux inside a circular magnetic body 4a. An induced voltage generated in an output winding 4d is detected depending on the changes in the flux. This allows the checking for possible DC current flowing in one way. A square wave current generating circuit 5a is made to synchronize with a detection circuit 5b to limit the time of detection the induced voltage generated in the winding 4b by the circuit 5b thereby enhancing the noise resistance.
JP3639780A 1980-03-21 1980-03-21 Dc current indicator Pending JPS56132570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3639780A JPS56132570A (en) 1980-03-21 1980-03-21 Dc current indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3639780A JPS56132570A (en) 1980-03-21 1980-03-21 Dc current indicator

Publications (1)

Publication Number Publication Date
JPS56132570A true JPS56132570A (en) 1981-10-16

Family

ID=12468712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3639780A Pending JPS56132570A (en) 1980-03-21 1980-03-21 Dc current indicator

Country Status (1)

Country Link
JP (1) JPS56132570A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144474U (en) * 1985-02-28 1986-09-06
JP2011191193A (en) * 2010-03-15 2011-09-29 Eneos Celltech Co Ltd Dc current sensor and dc current measuring method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011466A (en) * 1973-06-01 1975-02-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011466A (en) * 1973-06-01 1975-02-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144474U (en) * 1985-02-28 1986-09-06
JP2011191193A (en) * 2010-03-15 2011-09-29 Eneos Celltech Co Ltd Dc current sensor and dc current measuring method

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