GB1397246A - Apparatus for the measurement of magnetic fields - Google Patents

Apparatus for the measurement of magnetic fields

Info

Publication number
GB1397246A
GB1397246A GB4322171A GB4322171A GB1397246A GB 1397246 A GB1397246 A GB 1397246A GB 4322171 A GB4322171 A GB 4322171A GB 4322171 A GB4322171 A GB 4322171A GB 1397246 A GB1397246 A GB 1397246A
Authority
GB
United Kingdom
Prior art keywords
oscillators
magnetometer
difference
measurement
magnetic fields
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
GB4322171A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB4322171A priority Critical patent/GB1397246A/en
Priority to DE19722245191 priority patent/DE2245191A1/en
Publication of GB1397246A publication Critical patent/GB1397246A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

1397246 Magnetometers NATIONAL RESEARCH DEVELOPMENT CORP 22 Aug 1972 [16 Sept 1971] 43221/71 Heading G1N A magnetometer comprises oscillators 1 and 2 whose frequency determining circuits include an inductor 2 having a core whose permeability varies with the strength of the magnetic field being measured, and indicating and/or control means responsive to the frequency difference between the oscillators. The second oscillator may provide temperature compensation. The difference between their frequencies is indicated at 6. Both oscillators may be within a common aluminium housing clamped between the poles of a magnet which thus serves as a heat sink. The magnetometer may be used to measure the field in a mass spectrometer.
GB4322171A 1971-09-16 1971-09-16 Apparatus for the measurement of magnetic fields Expired GB1397246A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4322171A GB1397246A (en) 1971-09-16 1971-09-16 Apparatus for the measurement of magnetic fields
DE19722245191 DE2245191A1 (en) 1971-09-16 1972-09-14 DEVICE FOR MEASURING MAGNETIC FIELDS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4322171A GB1397246A (en) 1971-09-16 1971-09-16 Apparatus for the measurement of magnetic fields

Publications (1)

Publication Number Publication Date
GB1397246A true GB1397246A (en) 1975-06-11

Family

ID=10427803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4322171A Expired GB1397246A (en) 1971-09-16 1971-09-16 Apparatus for the measurement of magnetic fields

Country Status (2)

Country Link
DE (1) DE2245191A1 (en)
GB (1) GB1397246A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426267A1 (en) * 1978-05-15 1979-12-14 Gen Electric Co Ltd Voltage or magnetic flux comparator - has tow current domain magnetometer with outputs connected to counter and dual pulse generator
US5134371A (en) * 1989-01-18 1992-07-28 Nippondenso Co., Ltd. Magnetic detection device using an oscillator whose detection element is a magnetoresitance effective element
US5686835A (en) * 1989-01-18 1997-11-11 Nippondenso Co., Ltd Physical quantity detection device for converting a physical quantity into a corresponding time interval

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450462A1 (en) * 1979-02-27 1980-09-26 Thomson Csf MAGNETOSTATIC WAVE MAGNETOMETER
DE2933129C2 (en) * 1979-08-16 1982-07-22 Wolfgang Prof. Dr. 4400 Münster Meyer zu Reckendorf Device for measuring magnetic fields
DE3029532C2 (en) * 1980-08-04 1982-11-25 Siemens AG, 1000 Berlin und 8000 München Arrangement for determining the field strength of a magnetic field
US4541431A (en) * 1984-09-20 1985-09-17 Telectronics Pty. Ltd. Use of telemetry coil to replace magnetically activated reed switch in implantable devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426267A1 (en) * 1978-05-15 1979-12-14 Gen Electric Co Ltd Voltage or magnetic flux comparator - has tow current domain magnetometer with outputs connected to counter and dual pulse generator
US5134371A (en) * 1989-01-18 1992-07-28 Nippondenso Co., Ltd. Magnetic detection device using an oscillator whose detection element is a magnetoresitance effective element
US5359287A (en) * 1989-01-18 1994-10-25 Nippondenso Co., Ltd. Magnetic detecting circuit having magnetoresistance effective elements oriented in at least two different directions
US5686835A (en) * 1989-01-18 1997-11-11 Nippondenso Co., Ltd Physical quantity detection device for converting a physical quantity into a corresponding time interval

Also Published As

Publication number Publication date
DE2245191A1 (en) 1973-03-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees