JPS5679971A - Residual magnetic flux density measuring apparatus - Google Patents

Residual magnetic flux density measuring apparatus

Info

Publication number
JPS5679971A
JPS5679971A JP15753779A JP15753779A JPS5679971A JP S5679971 A JPS5679971 A JP S5679971A JP 15753779 A JP15753779 A JP 15753779A JP 15753779 A JP15753779 A JP 15753779A JP S5679971 A JPS5679971 A JP S5679971A
Authority
JP
Japan
Prior art keywords
pulse
current
flux density
magnetic flux
residual magnetic
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
JP15753779A
Other languages
Japanese (ja)
Inventor
Daiju Nakakura
Koji Suzuki
Kanemitsu Kawahara
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP15753779A priority Critical patent/JPS5679971A/en
Publication of JPS5679971A publication Critical patent/JPS5679971A/en
Pending legal-status Critical Current

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  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE: To enable the residual magnetic flux density of steel materials to be measured in a short time by using DC pulse current as exciting current and detecting magnetic force characteristics from the difference in the excited detection voltages.
CONSTITUTION: When DC pulse current is applied to a steel material, pulses are generated in a pulse generator A, and this pulse current is amplified by a pulse amplifier B, whereby the pulse value is obtained. Next, the voltage excited by this is amplified by a pulse amplifier B' and is detected via a detecting mechanism C. The DC pulse current is increased gradually, and when the difference between the pulse value and the pulse potential obtained in the mechanism C exceeds a fixed value, a discriminator D operates and a gate G is closed by the operation of this discriminator D, then a pulse counter E starts operating and the result thereof is displayed in a display device F.
COPYRIGHT: (C)1981,JPO&Japio
JP15753779A 1979-12-05 1979-12-05 Residual magnetic flux density measuring apparatus Pending JPS5679971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15753779A JPS5679971A (en) 1979-12-05 1979-12-05 Residual magnetic flux density measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15753779A JPS5679971A (en) 1979-12-05 1979-12-05 Residual magnetic flux density measuring apparatus

Publications (1)

Publication Number Publication Date
JPS5679971A true JPS5679971A (en) 1981-06-30

Family

ID=15651840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15753779A Pending JPS5679971A (en) 1979-12-05 1979-12-05 Residual magnetic flux density measuring apparatus

Country Status (1)

Country Link
JP (1) JPS5679971A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103913710A (en) * 2014-03-28 2014-07-09 云南电力试验研究院（集团）有限公司电力研究院 Method for measuring residual magnetic flux density of iron core of transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103913710A (en) * 2014-03-28 2014-07-09 云南电力试验研究院（集团）有限公司电力研究院 Method for measuring residual magnetic flux density of iron core of transformer

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