JPS5764910A - Device for generating predetermined magnetic field of alternative polaritys for measuring magnetic flux dnesity - Google Patents

Device for generating predetermined magnetic field of alternative polaritys for measuring magnetic flux dnesity

Info

Publication number
JPS5764910A
JPS5764910A JP56055732A JP5573281A JPS5764910A JP S5764910 A JPS5764910 A JP S5764910A JP 56055732 A JP56055732 A JP 56055732A JP 5573281 A JP5573281 A JP 5573281A JP S5764910 A JPS5764910 A JP S5764910A
Authority
JP
Japan
Prior art keywords
dnesity
polaritys
alternative
magnetic field
generating predetermined
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.)
Granted
Application number
JP56055732A
Other languages
English (en)
Other versions
JPS6325691B2 (ja
Inventor
Hafunaa Peetaa
Furetsuken Peetaa
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.)
Endress and Hauser Flowtec AG
Original Assignee
Flowtec 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 Flowtec AG filed Critical Flowtec AG
Publication of JPS5764910A publication Critical patent/JPS5764910A/ja
Publication of JPS6325691B2 publication Critical patent/JPS6325691B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/66Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/661Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals
    • H03K17/662Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals each output circuit comprising more than one controlled bipolar transistor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60Circuits therefor
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/04Modifications for accelerating switching
    • H03K17/041Modifications for accelerating switching without feedback from the output circuit to the control circuit
    • H03K17/0416Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the output circuit
    • H03K17/04166Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the output circuit in bipolar transistor switches
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Measuring Magnetic Variables (AREA)
  • Relay Circuits (AREA)
  • Rectifiers (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Measuring Volume Flow (AREA)
JP56055732A 1980-10-02 1981-04-15 Device for generating predetermined magnetic field of alternative polaritys for measuring magnetic flux dnesity Granted JPS5764910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3037305A DE3037305C2 (de) 1980-10-02 1980-10-02 Anordnung zur Erzeugung magnetischer Gleichfelder wechselnder Polarität für die magnetisch-induktive Durchflußmessung

Publications (2)

Publication Number Publication Date
JPS5764910A true JPS5764910A (en) 1982-04-20
JPS6325691B2 JPS6325691B2 (ja) 1988-05-26

Family

ID=6113475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055732A Granted JPS5764910A (en) 1980-10-02 1981-04-15 Device for generating predetermined magnetic field of alternative polaritys for measuring magnetic flux dnesity

Country Status (11)

Country Link
US (1) US4410926A (ja)
JP (1) JPS5764910A (ja)
BE (1) BE890573A (ja)
CH (1) CH655795A5 (ja)
DD (1) DD201727A5 (ja)
DE (1) DE3037305C2 (ja)
FR (1) FR2491620B1 (ja)
GB (1) GB2084827B (ja)
IT (1) IT1138649B (ja)
NL (1) NL8104462A (ja)
SE (1) SE458311B (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02122221A (ja) * 1988-10-31 1990-05-09 Shimadzu Corp 電磁流量計
JP2008244697A (ja) * 2007-03-27 2008-10-09 National Institute Of Information & Communication Technology 水平面ビーム走査型アンテナ
JP2014128175A (ja) * 2012-12-27 2014-07-07 Nidec Sankyo Corp 磁界発生装置および磁気記録媒体処理装置
JP2019012582A (ja) * 2017-06-30 2019-01-24 日本電産サンキョー株式会社 磁気記録媒体処理装置および妨害磁界発生方法

Families Citing this family (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334152A1 (de) * 1983-09-21 1985-04-04 Fischer & Porter GmbH, 3400 Göttingen Magnetisch induktiver durchflussmesser
DE3442272A1 (de) * 1984-11-20 1986-05-22 Turbo-Werk Messtechnik GmbH, 5000 Köln Induktiver durchflussmesser
AT392384B (de) * 1985-02-04 1991-03-25 Zumtobel Ag Vorschaltgeraet zum betrieb von gasentladungslampen mit gleichstrom
DE3512921A1 (de) * 1985-04-11 1986-10-16 Turbo-Werk Messtechnik GmbH, 5000 Köln Schaltungsanordnung zur erzeugung eines pulsierenden magnetischen feldes in der erregerspule eines induktiven durchflussmessers
GB8530930D0 (en) * 1985-12-16 1986-01-29 Mansfield P Inductive circuit arrangements
DE3616407A1 (de) * 1986-05-15 1987-11-19 Bopp & Reuther Gmbh Induktiver durchflussmesser
NL8601331A (nl) * 1986-05-26 1987-12-16 At & T & Philips Telecomm Zender voor isdn s-bus koppelvlakcircuit.
EP0250718A1 (de) * 1986-06-30 1988-01-07 Siemens Aktiengesellschaft Stromversorgung für einen induktiven Verbraucher, insbesondere eine Gradientenspule, mit Steuer- und Regeleinrichtung
NL8601798A (nl) * 1986-07-10 1988-02-01 Hollandse Signaalapparaten Bv Energieomzetter.
US4868504A (en) * 1987-02-09 1989-09-19 Flr, Inc. Apparatus and method for locating metal objects and minerals in the ground with return of energy from transmitter coil to power supply
US4879641A (en) * 1987-11-02 1989-11-07 Sgs-Thomson Microelectronics S.R.L. Analog multiplex for sensing the magnitude and sense of the current through a h-bridge stage utilizing a single sensing resistance
DE58902444D1 (de) * 1988-03-18 1992-11-19 Siemens Ag Kurzschlussschutz fuer eine motorisch sowie generatorisch betreibbare pulsumrichtergespeiste elektrische maschine.
US4916381A (en) * 1988-05-12 1990-04-10 Rosemount Inc. Current source for a variable load with an inductive component
JPH078300B2 (ja) * 1988-06-21 1995-02-01 三菱電機株式会社 荷電粒子ビームの照射装置
DE3907057A1 (de) * 1989-03-04 1990-09-13 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
US4920470A (en) * 1989-05-17 1990-04-24 Zirco, Inc. Voltage inverter
US5222012A (en) * 1991-01-17 1993-06-22 International Business Machines Corporation Power management circuit for a magnetic repulsion punch
EP0521169B1 (de) * 1991-06-08 1995-11-08 Endress + Hauser Flowtec AG Magnetisch-induktiver Durchflussmesser
US5350992A (en) * 1991-09-17 1994-09-27 Micro-Trak Systems, Inc. Motor control circuit
DE59509590D1 (de) * 1995-10-20 2001-10-18 Flowtec Ag Magnetisch-induktiver Durchflussmesser zur Messung von nicht-newtonschen Flüssigkeiten
UA53671C2 (uk) * 1996-11-07 2003-02-17 Англо Амерікан Корпорейшн Оф Саут Африка Лімітед Генератор імпульсів для збудження котушки періодичними біполярними імпульсами (варіанти) та спосіб генерування послідовності періодичних біполярних імпульсів струму (варіанти)
JP2976923B2 (ja) * 1997-04-25 1999-11-10 日本電気株式会社 容量性負荷の駆動装置
WO1999016056A1 (fr) * 1997-09-22 1999-04-01 Matsushita Electric Industrial Co., Ltd. Circuit de commande d'ecriture
CN1096604C (zh) * 1998-07-03 2002-12-18 安德雷斯和霍瑟·弗罗泰克有限公司 用于调节电磁流量检测器的线圈电流的方法
EP0969268A1 (de) * 1998-07-03 2000-01-05 Endress + Hauser Flowtec AG Verfahren zum Regeln des Spulenstroms von magnetisch-induktiven Durchflussaufnehmern
US6031740A (en) * 1998-07-03 2000-02-29 Endress + Hauser Flowtec Ag Method of regulating the coil current of electromagnetic flow sensors
DE19905003A1 (de) * 1999-02-08 2000-08-10 Wagner Kg Umpolsteuergerät
US6218831B1 (en) * 1999-05-19 2001-04-17 Arthur D. Little, Inc. Low power fluxgate circuit with current balance
EP1158279A1 (de) * 2000-05-22 2001-11-28 Endress + Hauser Flowtec AG Stromregel-Schaltung eines magnetisch-induktiven Durchflussmessgerät zum Erzeugen eines Speisestroms für eine Erreger-Schaltung
US6646448B2 (en) 2000-09-27 2003-11-11 Seagate Technology Llc Data head writer coil testing
AUPR083800A0 (en) * 2000-10-17 2000-11-09 Bhc Consulting Pty Ltd Ground mineralisation rejecting metal detector (power saving)
GB0200030D0 (en) 2002-01-02 2002-02-13 Bae Systems Plc A switching circuit and a method of operation thereof
GB0200027D0 (en) 2002-01-02 2002-02-13 Bae Systems Plc Improvements relating to operation of a current controller
GB0200024D0 (en) 2002-01-02 2002-02-13 Bae Systems Plc A switching circuit and a method of operation thereof
DE10356009B4 (de) * 2003-11-27 2007-10-18 Krohne Meßtechnik GmbH & Co KG Magnetisch-induktives Durchflußmeßgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflußmeßgeräts
DE102004046238A1 (de) 2004-09-22 2006-03-23 Endress + Hauser Flowtec Ag Magnetisch-induktives Durchflussmessgerät
DE102005016826A1 (de) * 2005-04-12 2006-10-19 Trw Automotive Gmbh Ansteuerschaltung für einen impulsgesteuerten Aktor
US7194918B2 (en) * 2005-08-26 2007-03-27 Krohne Messtechnik Gmbh & Co. Kg Magnetoinductive flowmeter and method for operating a magnetoinductive flowmeter
DE102007015368A1 (de) 2007-03-28 2008-10-02 Endress + Hauser Flowtec Ag Verfahren zum Betreiben eines magnetisch-induktiven Durchflußmeßgeräts
US9250348B2 (en) 2011-12-19 2016-02-02 Minelab Electronics Pty Limited Transmit signal of a metal detector controlled by feedback loops
DE102011087827A1 (de) * 2011-12-06 2013-06-06 Endress + Hauser Flowtec Ag Verfahren und Schaltung zur Netzsynchronisation eines magnetisch-induktiven Durchflussmessgeräts
JP5843670B2 (ja) * 2012-03-15 2016-01-13 アズビル株式会社 電磁流量計の励磁回路
CN102680934A (zh) * 2012-05-31 2012-09-19 株洲南车时代电气股份有限公司 电流传感器测试用电流换向装置
WO2014141285A1 (en) * 2013-03-14 2014-09-18 Given Imaging Ltd. Method and circuit for muting electromagnetic interference during maneuvering of a device
US9590601B2 (en) 2014-04-07 2017-03-07 Lockheed Martin Corporation Energy efficient controlled magnetic field generator circuit
US10520558B2 (en) 2016-01-21 2019-12-31 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with nitrogen-vacancy center diamond located between dual RF sources
US9557391B2 (en) 2015-01-23 2017-01-31 Lockheed Martin Corporation Apparatus and method for high sensitivity magnetometry measurement and signal processing in a magnetic detection system
US9817081B2 (en) 2016-01-21 2017-11-14 Lockheed Martin Corporation Magnetometer with light pipe
US9910105B2 (en) 2014-03-20 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US9853837B2 (en) 2014-04-07 2017-12-26 Lockheed Martin Corporation High bit-rate magnetic communication
US9829545B2 (en) 2015-11-20 2017-11-28 Lockheed Martin Corporation Apparatus and method for hypersensitivity detection of magnetic field
US9910104B2 (en) 2015-01-23 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US10338162B2 (en) 2016-01-21 2019-07-02 Lockheed Martin Corporation AC vector magnetic anomaly detection with diamond nitrogen vacancies
US9845153B2 (en) 2015-01-28 2017-12-19 Lockheed Martin Corporation In-situ power charging
US9638821B2 (en) 2014-03-20 2017-05-02 Lockheed Martin Corporation Mapping and monitoring of hydraulic fractures using vector magnetometers
US10168393B2 (en) 2014-09-25 2019-01-01 Lockheed Martin Corporation Micro-vacancy center device
US9551763B1 (en) 2016-01-21 2017-01-24 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with common RF and magnetic fields generator
US10088452B2 (en) 2016-01-12 2018-10-02 Lockheed Martin Corporation Method for detecting defects in conductive materials based on differences in magnetic field characteristics measured along the conductive materials
WO2016190909A2 (en) 2015-01-28 2016-12-01 Lockheed Martin Corporation Magnetic navigation methods and systems utilizing power grid and communication network
WO2016126436A1 (en) 2015-02-04 2016-08-11 Lockheed Martin Corporation Apparatus and method for recovery of three dimensional magnetic field from a magnetic detection system
GB2550809A (en) 2015-02-04 2017-11-29 Lockheed Corp Apparatus and method for estimating absolute axes' orientations for a magnetic detection system
WO2017078766A1 (en) 2015-11-04 2017-05-11 Lockheed Martin Corporation Magnetic band-pass filter
WO2017087013A1 (en) 2015-11-20 2017-05-26 Lockheed Martin Corporation Apparatus and method for closed loop processing for a magnetic detection system
WO2017095454A1 (en) 2015-12-01 2017-06-08 Lockheed Martin Corporation Communication via a magnio
WO2017127081A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with circuitry on diamond
WO2017127098A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensed ferro-fluid hydrophone
AU2016387314A1 (en) 2016-01-21 2018-09-06 Lockheed Martin Corporation Magnetometer with a light emitting diode
WO2017127090A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Higher magnetic sensitivity through fluorescence manipulation by phonon spectrum control
US10330744B2 (en) 2017-03-24 2019-06-25 Lockheed Martin Corporation Magnetometer with a waveguide
US10677953B2 (en) 2016-05-31 2020-06-09 Lockheed Martin Corporation Magneto-optical detecting apparatus and methods
DE102016110024A1 (de) 2016-05-31 2017-11-30 Endress + Hauser Flowtec Ag Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts zur Messung der Durchflussgeschwindigkeit oder des Volumendurchflusses eines Mediums in einem Messrohr
US10274550B2 (en) 2017-03-24 2019-04-30 Lockheed Martin Corporation High speed sequential cancellation for pulsed mode
US10571530B2 (en) 2016-05-31 2020-02-25 Lockheed Martin Corporation Buoy array of magnetometers
US10527746B2 (en) 2016-05-31 2020-01-07 Lockheed Martin Corporation Array of UAVS with magnetometers
US20170343621A1 (en) 2016-05-31 2017-11-30 Lockheed Martin Corporation Magneto-optical defect center magnetometer
US10228429B2 (en) 2017-03-24 2019-03-12 Lockheed Martin Corporation Apparatus and method for resonance magneto-optical defect center material pulsed mode referencing
US10338163B2 (en) 2016-07-11 2019-07-02 Lockheed Martin Corporation Multi-frequency excitation schemes for high sensitivity magnetometry measurement with drift error compensation
US10359479B2 (en) 2017-02-20 2019-07-23 Lockheed Martin Corporation Efficient thermal drift compensation in DNV vector magnetometry
US10345395B2 (en) 2016-12-12 2019-07-09 Lockheed Martin Corporation Vector magnetometry localization of subsurface liquids
US10408890B2 (en) 2017-03-24 2019-09-10 Lockheed Martin Corporation Pulsed RF methods for optimization of CW measurements
US10145910B2 (en) 2017-03-24 2018-12-04 Lockheed Martin Corporation Photodetector circuit saturation mitigation for magneto-optical high intensity pulses
US10345396B2 (en) 2016-05-31 2019-07-09 Lockheed Martin Corporation Selected volume continuous illumination magnetometer
US10371765B2 (en) 2016-07-11 2019-08-06 Lockheed Martin Corporation Geolocation of magnetic sources using vector magnetometer sensors
US10317279B2 (en) 2016-05-31 2019-06-11 Lockheed Martin Corporation Optical filtration system for diamond material with nitrogen vacancy centers
US10281550B2 (en) 2016-11-14 2019-05-07 Lockheed Martin Corporation Spin relaxometry based molecular sequencing
US10371760B2 (en) 2017-03-24 2019-08-06 Lockheed Martin Corporation Standing-wave radio frequency exciter
US10379174B2 (en) 2017-03-24 2019-08-13 Lockheed Martin Corporation Bias magnet array for magnetometer
US10459041B2 (en) 2017-03-24 2019-10-29 Lockheed Martin Corporation Magnetic detection system with highly integrated diamond nitrogen vacancy sensor
US10338164B2 (en) 2017-03-24 2019-07-02 Lockheed Martin Corporation Vacancy center material with highly efficient RF excitation
DE102017107417A1 (de) 2017-04-06 2018-10-11 Endress+Hauser Flowtec Ag Verfahren zum Regeln eines in einer Spulenanordnung fließenden Spulenstroms und eine Schaltungsanordnung
WO2018215034A1 (en) * 2017-07-07 2018-11-29 Apator Miitors Aps Electromagnetic flow meter
EP3460419B1 (de) * 2017-09-22 2020-04-01 VEGA Grieshaber KG Messanordnung, messgerät mit einer messanordnung und verfahren zum betreiben des messgeräts

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3284692A (en) * 1963-06-05 1966-11-08 Lambda Electronics Corp Compensated regulated power supply
US3684983A (en) * 1970-06-19 1972-08-15 E & M Lab High speed circulator switch
US3733538A (en) * 1972-03-28 1973-05-15 Westinghouse Electric Corp Apparatus for limiting instantaneous inverter current
US3896346A (en) * 1972-11-21 1975-07-22 Electronic Camshaft Corp High speed electromagnet control circuit
US3893006A (en) * 1974-01-14 1975-07-01 Nordson Corp High voltage power supply with overcurrent protection
US3955413A (en) * 1974-03-27 1976-05-11 Steele James R Electrical system for electromagnetically measuring flow of fluid
DE2744845C3 (de) * 1977-10-05 1985-08-08 Flowtec AG, Reinach, Basel Verfahren zur Kompensation der elektrochemischen Störgleichspannung bei der magnetisch-induktiven Durchflußmessung mit periodisch umgepoltem magnetischem Gleichfeld
DE2934990C2 (de) * 1979-08-30 1985-04-18 Eckardt Ag, 7000 Stuttgart Anordnung zur magnetischen Durchflußmessung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02122221A (ja) * 1988-10-31 1990-05-09 Shimadzu Corp 電磁流量計
JPH0695031B2 (ja) * 1988-10-31 1994-11-24 株式会社島津製作所 電磁流量計
JP2008244697A (ja) * 2007-03-27 2008-10-09 National Institute Of Information & Communication Technology 水平面ビーム走査型アンテナ
JP2014128175A (ja) * 2012-12-27 2014-07-07 Nidec Sankyo Corp 磁界発生装置および磁気記録媒体処理装置
JP2019012582A (ja) * 2017-06-30 2019-01-24 日本電産サンキョー株式会社 磁気記録媒体処理装置および妨害磁界発生方法

Also Published As

Publication number Publication date
SE458311B (sv) 1989-03-13
FR2491620A1 (fr) 1982-04-09
JPS6325691B2 (ja) 1988-05-26
IT1138649B (it) 1986-09-17
IT8124179A0 (it) 1981-09-28
US4410926A (en) 1983-10-18
DE3037305C2 (de) 1986-04-03
DD201727A5 (de) 1983-08-03
FR2491620B1 (fr) 1986-05-30
DE3037305A1 (de) 1982-06-24
SE8105807L (sv) 1982-04-03
CH655795A5 (de) 1986-05-15
GB2084827B (en) 1984-09-05
BE890573A (fr) 1982-02-01
NL8104462A (nl) 1982-05-03
GB2084827A (en) 1982-04-15

Similar Documents

Publication Publication Date Title
JPS5764910A (en) Device for generating predetermined magnetic field of alternative polaritys for measuring magnetic flux dnesity
GB8319967D0 (en) Magnetic field measuring device
DE3363225D1 (en) Measuring instrument of magnetic field
DE3566185D1 (en) Magnetic field generating device for nmr-ct
JPS5557140A (en) Fourrpole coil for generating magnetic field
GB8828809D0 (en) Apparatus for measuring position of armature of coil & armature magnetic device
GB2022257B (en) Apparatus for sensing an external magnetic field
DE3370873D1 (en) Multichannel apparatus measuring the weak magnetic fields generated by different field sources
DE3370871D1 (en) Apparatus for detecting and/or measuring a magnetic vector potential field
GB8320930D0 (en) Apparatus for magnetically testing
JPS56152656A (en) Device applying for magnetic field
GB8427389D0 (en) Device for measurement of dimension
EP0140535A3 (en) Apparatus for measuring the magnitude of a magnetic field
GB2070257B (en) Apparatus for measuring an electrical field
DE3174704D1 (en) Device for propagating magnetic domains
DE3165225D1 (en) Device for propagating magnetic domains
DE3467935D1 (en) Device for measuring the gradient of a magnetic field using the magneto-optical effect
JPS52112763A (en) Method of and device for generating magnetic field
SU1040919A1 (ru) Устройство для измерения потока магнитного поля
JPS54130968A (en) Device for measuring magnetic flux density
JPS54111870A (en) Method and device for measuring distribution of magnetic flux
ZA837891B (en) Magnetic testing apparatus
JPS54130967A (en) Device for measuring magnetic flux density
JPS54147468A (en) Coil device for generating homogeneous magnetic field
JPS56132595A (en) Movable neutron flux measuring device