FI98411B - Parannettu virtalähde - Google Patents

Parannettu virtalähde

Info

Publication number
FI98411B
FI98411B FI933675A FI933675A FI98411B FI 98411 B FI98411 B FI 98411B FI 933675 A FI933675 A FI 933675A FI 933675 A FI933675 A FI 933675A FI 98411 B FI98411 B FI 98411B
Authority
FI
Finland
Prior art keywords
power supply
improved power
improved
supply
power
Prior art date
Application number
FI933675A
Other languages
English (en)
Swedish (sv)
Other versions
FI933675A0 (fi
FI98411C (fi
FI933675A (fi
Inventor
Goesta Ehnholm
Seppo Pekonen
Juha Virtanen
Original Assignee
Picker Nordstar Oy
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 Picker Nordstar Oy filed Critical Picker Nordstar Oy
Priority to FI933675A priority Critical patent/FI98411C/fi
Publication of FI933675A0 publication Critical patent/FI933675A0/fi
Priority to US08/293,379 priority patent/US5570022A/en
Publication of FI933675A publication Critical patent/FI933675A/fi
Publication of FI98411B publication Critical patent/FI98411B/fi
Application granted granted Critical
Publication of FI98411C publication Critical patent/FI98411C/fi

Links

Classifications

    • 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
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FI933675A 1993-08-20 1993-08-20 Parannettu virtalähde FI98411C (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI933675A FI98411C (fi) 1993-08-20 1993-08-20 Parannettu virtalähde
US08/293,379 US5570022A (en) 1993-08-20 1994-08-19 Power supply for MRI magnets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI933675A FI98411C (fi) 1993-08-20 1993-08-20 Parannettu virtalähde
FI933675 1993-08-20

Publications (4)

Publication Number Publication Date
FI933675A0 FI933675A0 (fi) 1993-08-20
FI933675A FI933675A (fi) 1995-02-21
FI98411B true FI98411B (fi) 1997-02-28
FI98411C FI98411C (fi) 1997-06-10

Family

ID=8538448

Family Applications (1)

Application Number Title Priority Date Filing Date
FI933675A FI98411C (fi) 1993-08-20 1993-08-20 Parannettu virtalähde

Country Status (2)

Country Link
US (1) US5570022A (fi)
FI (1) FI98411C (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5726571A (en) * 1996-04-24 1998-03-10 The Regents Of The University Of California Apparatus and method for real-time k-space mapping of the scanning operation of a magnetic resonance imaging system
US6459265B1 (en) * 1998-11-25 2002-10-01 General Electric Company Method and apparatus for reducing input impedance of a preamplifier
US8027139B2 (en) * 2009-05-11 2011-09-27 General Electric Company System and method for superconducting magnet ramp-down
US10067203B2 (en) * 2015-10-09 2018-09-04 General Electric Company Energy storage solution for an MRI system
CN115407252A (zh) 2016-06-22 2022-11-29 优瑞技术公司 低场强磁共振成像
US11209509B2 (en) 2018-05-16 2021-12-28 Viewray Technologies, Inc. Resistive electromagnet systems and methods

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405326A (en) * 1965-06-04 1968-10-08 Atomic Energy Commission Usa Magnet sweep control circuit
US4030085A (en) * 1976-07-20 1977-06-14 The United States Of America As Represented By The United States Energy Research And Development Administration Nonferromagnetic linear variable differential transformer
DK149238C (da) * 1983-09-15 1987-01-19 Danfysik As Detektorkredslaeb til brug ved straemmaaling
KR900004956B1 (ko) * 1985-04-05 1990-07-12 니뽕 빅터 가부시끼 가이샤 텔레비젼 수상기 및 그 전원회로
US4768002A (en) * 1987-02-24 1988-08-30 Triad Microsystems, Inc. Power filter resonant frequency modulation network
US4893070A (en) * 1989-02-28 1990-01-09 The United States Of America As Represented By The Secretary Of The Air Force Domino effect shunt voltage regulator
GB8929300D0 (en) * 1989-12-29 1990-02-28 Instrumentarium Corp Apparatus
US5063349A (en) * 1990-06-04 1991-11-05 General Electric Company Transformer-coupled gradient speed-up circuit
US5172061A (en) * 1990-09-18 1992-12-15 The Regents Of The University Of California Q control for capacitively coupled MRI/MRSI RF coil
EP0480354B1 (en) * 1990-10-08 1997-02-26 Canon Kabushiki Kaisha Electron wave interference device and related method for modulating an interference current
DE4033281A1 (de) * 1990-10-19 1992-04-23 Bruker Analytische Messtechnik Hochleistungsnetzgeraet
US5166620A (en) * 1990-11-07 1992-11-24 Advanced Techtronics, Inc. Nmr frequency locking circuit
US5260862A (en) * 1991-03-06 1993-11-09 Constant Velocity Transmission Lines, Inc. A-C power line filter
US5450011A (en) * 1992-05-07 1995-09-12 U.S. Philips Corporation Magnetic resonance apparatus having a wideband matching network

Also Published As

Publication number Publication date
FI933675A0 (fi) 1993-08-20
US5570022A (en) 1996-10-29
FI98411C (fi) 1997-06-10
FI933675A (fi) 1995-02-21

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Legal Events

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BB Publication of examined application