GB767542A - Improvements in or relating to electrical measuring apparatus - Google Patents

Improvements in or relating to electrical measuring apparatus

Info

Publication number
GB767542A
GB767542A GB25321/54A GB2532154A GB767542A GB 767542 A GB767542 A GB 767542A GB 25321/54 A GB25321/54 A GB 25321/54A GB 2532154 A GB2532154 A GB 2532154A GB 767542 A GB767542 A GB 767542A
Authority
GB
United Kingdom
Prior art keywords
current
measured
magnetic field
conductor
bridge
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
GB25321/54A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB767542A publication Critical patent/GB767542A/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 Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

767,542. Magnetic tests; current measurement. SIEMENS - SCHUCKERTWERKE AKT.-GES. Aug. 31, 1954 [Aug. 31, 1953], No. 25321/54. Addition to 759,047. Class 37. Measuring-apparatus comprises an instrument having a semi-conductor member sensitive to a magnetic field as in the parent Specification, and in which a current to be measured is arranged to vary the magnetic field. In Fig. 1, a body 1 of indium antimonide or other Am Bv compound in a bridge circuit is fed with alternating current. The output of the bridge is applied via transformer 6, bridge rectifier and terminals 10, 11, to a direct current measuring instrument. Conductor 2 carrying the current to be measured is placed adjacent body 1, and the change in resistance of body 1 due to the magnetic field surrounding conductor 2 enables the current to be measured. In an alternative arrangement, the Hall effect output from the body is used instead of the change of resistance, to indicate the magnitude of the adjacent current. In this example, alternating current is applied to the body 1 via a choking coil having a core with rectangular magnetization loop, so that a rectangular constant current flows through the body regardless of variations in supply voltage. Specification 719,873 also is referred to.
GB25321/54A 1953-08-31 1954-08-31 Improvements in or relating to electrical measuring apparatus Expired GB767542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE767542X 1953-08-31

Publications (1)

Publication Number Publication Date
GB767542A true GB767542A (en) 1957-02-06

Family

ID=6673538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25321/54A Expired GB767542A (en) 1953-08-31 1954-08-31 Improvements in or relating to electrical measuring apparatus

Country Status (1)

Country Link
GB (1) GB767542A (en)

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