DE3678808D1 - Induktive schaltungsanordnungen. - Google Patents

Induktive schaltungsanordnungen.

Info

Publication number
DE3678808D1
DE3678808D1 DE8686309801T DE3678808T DE3678808D1 DE 3678808 D1 DE3678808 D1 DE 3678808D1 DE 8686309801 T DE8686309801 T DE 8686309801T DE 3678808 T DE3678808 T DE 3678808T DE 3678808 D1 DE3678808 D1 DE 3678808D1
Authority
DE
Germany
Prior art keywords
circuit arrangements
inductive circuit
inductive
arrangements
circuit
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 - Lifetime
Application number
DE8686309801T
Other languages
English (en)
Inventor
Peter Mansfield
Ronald John Coxon
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.)
BTG International Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10589823&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3678808(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Application granted granted Critical
Publication of DE3678808D1 publication Critical patent/DE3678808D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/022—H-Bridge head driver circuit, the "H" configuration allowing to inverse the current direction in the head
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic 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
    • H03K17/60—Electronic 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
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/661—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals
    • H03K17/662—Switching 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic 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
    • H03K17/687—Electronic 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 field-effect transistors
    • H03K17/6871—Electronic 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 field-effect transistors the output circuit comprising more than one controlled field-effect transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic 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
    • H03K17/687—Electronic 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 field-effect transistors
    • H03K17/693—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Electronic Switches (AREA)
DE8686309801T 1985-12-16 1986-12-16 Induktive schaltungsanordnungen. Expired - Lifetime DE3678808D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858530930A GB8530930D0 (en) 1985-12-16 1985-12-16 Inductive circuit arrangements

Publications (1)

Publication Number Publication Date
DE3678808D1 true DE3678808D1 (de) 1991-05-23

Family

ID=10589823

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686309801T Expired - Lifetime DE3678808D1 (de) 1985-12-16 1986-12-16 Induktive schaltungsanordnungen.

Country Status (6)

Country Link
US (1) US4820986A (de)
EP (1) EP0227411B2 (de)
JP (1) JPH0714388B2 (de)
CA (1) CA1262474A (de)
DE (1) DE3678808D1 (de)
GB (2) GB8530930D0 (de)

Families Citing this family (77)

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DE3838858A1 (de) * 1988-11-17 1990-05-23 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
DE3907057A1 (de) * 1989-03-04 1990-09-13 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
FR2645369A1 (fr) * 1989-03-30 1990-10-05 Alcatel Espace Module de puissance pour electronique de commande de moteur continu
US4961054A (en) * 1989-07-06 1990-10-02 General Electric Company Gradient current speed-up circuit for high-speed NMR imaging system
AT391782B (de) * 1989-07-11 1990-11-26 Elin Union Ag Schaltungsanordnung zum parallelbetrieb von zwei an einer gleichspannung angeschlossenen schaltpolen
DE3928281A1 (de) * 1989-08-26 1991-02-28 Philips Patentverwaltung Anordnung zur erzeugung von strompulsen vorgegebener form in einem induktiven verbraucher
US5017871A (en) * 1989-09-14 1991-05-21 General Electric Company Gradient current speed-up circuit for high-speed NMR imaging system
EP0429715B1 (de) * 1989-12-01 1996-07-10 Siemens Aktiengesellschaft Verfahren zum Betrieb eines Kernspintomographiegeräts mit einem Resonanzkreis zur Erzeugung von Gradientenfeldern
GB9011757D0 (en) * 1990-05-25 1990-07-18 Mansfield Peter Gradient coil circuits
US5105153A (en) * 1990-06-04 1992-04-14 General Electric Company Gradient speed-up circuit for nmr system
US5063349A (en) * 1990-06-04 1991-11-05 General Electric Company Transformer-coupled gradient speed-up circuit
JPH05509009A (ja) * 1990-06-13 1993-12-16 アドバンスト　エヌエムアール　システムズ，インク． 磁気共鳴イメージングシステムの磁界発生コイルの駆動回路
DE4032707A1 (de) * 1990-10-15 1992-04-16 Siemens Ag Entstoerfilter fuer eine gradientenspule in einem kernspinresonanz-bildgeraet
DE4127529C2 (de) * 1991-08-20 1995-06-08 Siemens Ag Verfahren zum Betrieb eines Kernspintomographiegeräts mit einem Resonanzkreis zur Erzeugung von Gradientenfeldern
IT1251205B (it) * 1991-09-18 1995-05-04 St Microelectronics Srl Circuito a ponte ad h con protezione contro la conduzione incrociata durante l'inversione della corrente nel carico.
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DE4304517C2 (de) * 1993-02-15 2002-12-19 Siemens Ag Stromversorgung für vorwiegend induktive Lasten
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GB9616499D0 (en) * 1996-08-06 1996-09-25 Oxford Instr Uk Ltd Magnetic field pulse generator
DE19731690C2 (de) * 1997-07-23 1999-10-28 Siemens Ag Leistungsverstärker und Kernspintomograph
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US6504426B2 (en) * 2001-03-28 2003-01-07 Guy Picha Methods and systems for power amplifying of signals
US6920312B1 (en) 2001-05-31 2005-07-19 Lam Research Corporation RF generating system with fast loop control
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
US7057390B1 (en) * 2004-09-20 2006-06-06 Southeastern Univ. Research Assn. Linear beam raster magnet driver based on H-bridge technique
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
US9541610B2 (en) 2015-02-04 2017-01-10 Lockheed Martin Corporation Apparatus and method for recovery of three dimensional magnetic field from a magnetic detection system
US9910104B2 (en) 2015-01-23 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US9910105B2 (en) 2014-03-20 2018-03-06 Lockheed Martin Corporation DNV magnetic field detector
US9823313B2 (en) 2016-01-21 2017-11-21 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with circuitry on diamond
US10168393B2 (en) 2014-09-25 2019-01-01 Lockheed Martin Corporation Micro-vacancy center device
US9824597B2 (en) 2015-01-28 2017-11-21 Lockheed Martin Corporation Magnetic navigation methods and systems utilizing power grid and communication network
US10120039B2 (en) 2015-11-20 2018-11-06 Lockheed Martin Corporation Apparatus and method for closed loop processing for a magnetic detection system
US9853837B2 (en) 2014-04-07 2017-12-26 Lockheed Martin Corporation High bit-rate magnetic communication
US10012704B2 (en) 2015-11-04 2018-07-03 Lockheed Martin Corporation Magnetic low-pass filter
US9638821B2 (en) 2014-03-20 2017-05-02 Lockheed Martin Corporation Mapping and monitoring of hydraulic fractures using vector magnetometers
CA2945016A1 (en) * 2014-04-07 2015-10-15 Lockheed Martin Corporation Energy efficient controlled magnetic field generator circuit
BR112017016261A2 (pt) 2015-01-28 2018-03-27 Lockheed Martin Corporation carga de energia in situ
WO2016126435A1 (en) 2015-02-04 2016-08-11 Lockheed Martin Corporation Apparatus and method for estimating absolute axes' orientations for a magnetic detection system
WO2017087014A1 (en) 2015-11-20 2017-05-26 Lockheed Martin Corporation Apparatus and method for hypersensitivity detection of magnetic field
WO2017095454A1 (en) 2015-12-01 2017-06-08 Lockheed Martin Corporation Communication via a magnio
WO2017123261A1 (en) 2016-01-12 2017-07-20 Lockheed Martin Corporation Defect detector for conductive materials
WO2017127098A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensed ferro-fluid hydrophone
WO2017127097A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Magnetometer with a light emitting diode
GB2562957A (en) 2016-01-21 2018-11-28 Lockheed Corp Magnetometer with light pipe
WO2017127090A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Higher magnetic sensitivity through fluorescence manipulation by phonon spectrum control
WO2017127095A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with common rf and magnetic fields generator
WO2017127096A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Diamond nitrogen vacancy sensor with dual rf sources
WO2017127079A1 (en) 2016-01-21 2017-07-27 Lockheed Martin Corporation Ac vector magnetic anomaly detection with diamond nitrogen vacancies
US10228429B2 (en) 2017-03-24 2019-03-12 Lockheed Martin Corporation Apparatus and method for resonance magneto-optical defect center material pulsed mode referencing
US20170343621A1 (en) 2016-05-31 2017-11-30 Lockheed Martin Corporation Magneto-optical defect center magnetometer
US10345395B2 (en) 2016-12-12 2019-07-09 Lockheed Martin Corporation Vector magnetometry localization of subsurface liquids
US10571530B2 (en) 2016-05-31 2020-02-25 Lockheed Martin Corporation Buoy array of magnetometers
US10338163B2 (en) 2016-07-11 2019-07-02 Lockheed Martin Corporation Multi-frequency excitation schemes for high sensitivity magnetometry measurement with drift error compensation
US10281550B2 (en) 2016-11-14 2019-05-07 Lockheed Martin Corporation Spin relaxometry based molecular sequencing
US10371765B2 (en) 2016-07-11 2019-08-06 Lockheed Martin Corporation Geolocation of magnetic sources using vector magnetometer sensors
US10527746B2 (en) 2016-05-31 2020-01-07 Lockheed Martin Corporation Array of UAVS with magnetometers
US10345396B2 (en) 2016-05-31 2019-07-09 Lockheed Martin Corporation Selected volume continuous illumination magnetometer
US10274550B2 (en) 2017-03-24 2019-04-30 Lockheed Martin Corporation High speed sequential cancellation for pulsed mode
US10408890B2 (en) 2017-03-24 2019-09-10 Lockheed Martin Corporation Pulsed RF methods for optimization of CW measurements
US10330744B2 (en) 2017-03-24 2019-06-25 Lockheed Martin Corporation Magnetometer with a waveguide
US10317279B2 (en) 2016-05-31 2019-06-11 Lockheed Martin Corporation Optical filtration system for diamond material with nitrogen vacancy centers
US10677953B2 (en) 2016-05-31 2020-06-09 Lockheed Martin Corporation Magneto-optical detecting apparatus and methods
US10145910B2 (en) 2017-03-24 2018-12-04 Lockheed Martin Corporation Photodetector circuit saturation mitigation for magneto-optical high intensity pulses
US10359479B2 (en) 2017-02-20 2019-07-23 Lockheed Martin Corporation Efficient thermal drift compensation in DNV vector magnetometry
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Also Published As

Publication number Publication date
GB2184625A (en) 1987-06-24
GB8530930D0 (en) 1986-01-29
CA1262474A (en) 1989-10-24
EP0227411B2 (de) 1994-08-03
JPS62155838A (ja) 1987-07-10
EP0227411B1 (en) 1991-04-17
GB8630025D0 (en) 1987-01-28
US4820986A (en) 1989-04-11
GB2184625B (en) 1989-10-11
JPH0714388B2 (ja) 1995-02-22
EP0227411A1 (de) 1987-07-01

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: BRITISH TECHNOLOGY GROUP LTD., LONDON, GB

8328 Change in the person/name/address of the agent

Free format text: DEUFEL, P., DIPL.-WIRTSCH.-ING.DR.RER.NAT. HERTEL, W., DIPL.-PHYS. RUTETZKI, A., DIPL.-ING.UNIV. RUCKER, E., DIPL.-CHEM. UNIV. DR.RER.NAT. HUBER, B., DIPL.-BIOL. DR.RER.NAT. BECKER, E., DR.RER.NAT., 80331 MUENCHEN KURIG, T., DIPL.-PHYS., 83022 ROSENHEIM STEIL, C., DIPL.-ING., PAT.-ANWAELTE, 80331 MUENCHEN

8366 Restricted maintained after opposition proceedings