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GB822210A - Improvements in or relating to instruments for making magnetic measurements - Google Patents

Improvements in or relating to instruments for making magnetic measurements

Info

Publication number
GB822210A
GB822210A GB1038857A GB1038857A GB822210A GB 822210 A GB822210 A GB 822210A GB 1038857 A GB1038857 A GB 1038857A GB 1038857 A GB1038857 A GB 1038857A GB 822210 A GB822210 A GB 822210A
Authority
GB
United Kingdom
Prior art keywords
elements
longitudinal axes
march
instruments
relating
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.)
Expired
Application number
GB1038857A
Inventor
Raymond Derek Groves
Raymond Wolfe
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1038857A priority Critical patent/GB822210A/en
Publication of GB822210A publication Critical patent/GB822210A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/07—Hall effect devices

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

822,210. Magnetic measuring instrument. GENERAL ELECTRIC CO. Ltd. March 14, 1958 [March 29, 1957], No. 10388/57. Class 37. A magnetic measuring instrument comprises a pair of similar elongated elements 1 and 2 of material having an appreciable Hall coefficient, the elements being disposed side by side with their longitudinal axes parallel, means for passing substantially constant electric currents through the elements in directions parallel to longitudinal axes, and indicating means responsive to the difference between the voltages developed across the axes of the elements perpendicular to the directions of the magnetic field to be measured and the longitudinal axes of the elements. The indicator responds therefore to the difference in field strengths in the two elements or the gradient of the field in a direction perpendicular to the longitudinal axes of the elements. The method of using the instrument for detecting flaws in ferromagnetic materials is described.
GB1038857A 1957-03-29 1957-03-29 Improvements in or relating to instruments for making magnetic measurements Expired GB822210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1038857A GB822210A (en) 1957-03-29 1957-03-29 Improvements in or relating to instruments for making magnetic measurements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1038857A GB822210A (en) 1957-03-29 1957-03-29 Improvements in or relating to instruments for making magnetic measurements

Publications (1)

Publication Number Publication Date
GB822210A true GB822210A (en) 1959-10-21

Family

ID=9966923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1038857A Expired GB822210A (en) 1957-03-29 1957-03-29 Improvements in or relating to instruments for making magnetic measurements

Country Status (1)

Country Link
GB (1) GB822210A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341772A (en) * 1963-10-26 1967-09-12 Siemens Ag Device for measuring locally dependent differences between the magnetic field gradient at different points of a magnetic field
US3359495A (en) * 1964-08-13 1967-12-19 Bell Inc F W Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field
US3370185A (en) * 1962-09-25 1968-02-20 Leybold Holding A G Semiconductor device for demonstrating the hall effect
DE1283959B (en) * 1963-10-26 1968-11-28 Siemens Ag Device for measuring magnetic field gradients
US3579099A (en) * 1969-06-05 1971-05-18 Takayuki Kanbayashi Improved flaw detection apparatus using specially located hall detector elements
EP0068081A1 (en) * 1981-06-26 1983-01-05 Kabushiki Kaisha Toshiba Hall element device
US10042010B2 (en) 2012-02-01 2018-08-07 Ams Ag Hall sensor and sensor arrangement

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370185A (en) * 1962-09-25 1968-02-20 Leybold Holding A G Semiconductor device for demonstrating the hall effect
US3341772A (en) * 1963-10-26 1967-09-12 Siemens Ag Device for measuring locally dependent differences between the magnetic field gradient at different points of a magnetic field
DE1283959B (en) * 1963-10-26 1968-11-28 Siemens Ag Device for measuring magnetic field gradients
US3359495A (en) * 1964-08-13 1967-12-19 Bell Inc F W Magnetic reaction testing apparatus and method of testing utilizing semiconductor means for magnetic field sensing of an eddy-current-reaction magnetic field
US3579099A (en) * 1969-06-05 1971-05-18 Takayuki Kanbayashi Improved flaw detection apparatus using specially located hall detector elements
EP0068081A1 (en) * 1981-06-26 1983-01-05 Kabushiki Kaisha Toshiba Hall element device
US4464629A (en) * 1981-06-26 1984-08-07 Tokyo Shibaura Denki Kabushiki Kaisha Hall element device
US10042010B2 (en) 2012-02-01 2018-08-07 Ams Ag Hall sensor and sensor arrangement

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