KR20000022900A - 자기 공진 결상 코일에 대한 연속적인 임의 파형을생성하는 스위칭 증폭기 - Google Patents

자기 공진 결상 코일에 대한 연속적인 임의 파형을생성하는 스위칭 증폭기 Download PDF

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Publication number
KR20000022900A
KR20000022900A KR1019990037300A KR19990037300A KR20000022900A KR 20000022900 A KR20000022900 A KR 20000022900A KR 1019990037300 A KR1019990037300 A KR 1019990037300A KR 19990037300 A KR19990037300 A KR 19990037300A KR 20000022900 A KR20000022900 A KR 20000022900A
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KR
South Korea
Prior art keywords
voltage
switching
input
buck regulator
bus
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.)
Withdrawn
Application number
KR1019990037300A
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English (en)
Korean (ko)
Inventor
스테이거왈드로버트루이스
위스윌리엄프레드릭
스테바노빅르쥬비사드라골쥬브
박존노튼
Original Assignee
제이 엘. 차스킨, 버나드 스나이더, 아더엠. 킹
제너럴 일렉트릭 캄파니
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Application filed by 제이 엘. 차스킨, 버나드 스나이더, 아더엠. 킹, 제너럴 일렉트릭 캄파니 filed Critical 제이 엘. 차스킨, 버나드 스나이더, 아더엠. 킹
Publication of KR20000022900A publication Critical patent/KR20000022900A/ko
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

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)
  • Inverter Devices (AREA)
KR1019990037300A 1998-09-04 1999-09-03 자기 공진 결상 코일에 대한 연속적인 임의 파형을생성하는 스위칭 증폭기 Withdrawn KR20000022900A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/148,559 US6031746A (en) 1998-09-04 1998-09-04 Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils
US9/148,559 1998-09-04

Publications (1)

Publication Number Publication Date
KR20000022900A true KR20000022900A (ko) 2000-04-25

Family

ID=22526290

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019990037300A Withdrawn KR20000022900A (ko) 1998-09-04 1999-09-03 자기 공진 결상 코일에 대한 연속적인 임의 파형을생성하는 스위칭 증폭기

Country Status (6)

Country Link
US (1) US6031746A (enExample)
EP (1) EP0987818B1 (enExample)
JP (1) JP4362176B2 (enExample)
KR (1) KR20000022900A (enExample)
CN (1) CN1247319A (enExample)
DE (1) DE69913454T2 (enExample)

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US7336059B2 (en) * 2005-11-15 2008-02-26 General Electric Company System and method for charging and discharging a superconducting coil
KR101122847B1 (ko) * 2007-02-01 2012-03-22 제이엠 일렉트로닉스 엘티디. 엘엘씨 스위칭 증폭기의 샘플링 주파수 감소 시스템 및 방법
US7508096B1 (en) * 2007-09-20 2009-03-24 General Electric Company Switching circuit apparatus having a series conduction path for servicing a load and switching method
EP2234237A1 (en) * 2009-03-26 2010-09-29 ABB Research Ltd. Method for controlling single-phase DC/AC converters and converter arrangement
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JP5780512B2 (ja) * 2010-06-07 2015-09-16 株式会社東芝 磁気共鳴イメージング装置
CN102947720B (zh) * 2010-06-17 2015-07-08 皇家飞利浦电子股份有限公司 梯度线圈电源和磁共振成像系统
JP5731328B2 (ja) * 2011-08-30 2015-06-10 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー インバータ装置およびｍｒ装置
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CN102508183B (zh) * 2011-11-11 2013-09-11 辽宁开普医疗系统有限公司 一种负载自适应控制的数字可变频pwm梯度放大器
CN103176150B (zh) * 2011-12-21 2015-08-26 通用电气公司 梯度放大器系统及其控制方法
US20150130464A1 (en) * 2012-03-12 2015-05-14 Koninklijke Philips N.V. Power converter for powering an mri gradient coil and method of operating a power converter
WO2014016774A1 (en) * 2012-07-25 2014-01-30 Koninklijke Philips N.V. Mri gradient amplifier operable at different slew rates
US9344042B2 (en) * 2013-02-27 2016-05-17 Hengchun Mao High efficiency power amplifiers with advanced power solutions
US10270439B2 (en) * 2013-02-27 2019-04-23 Hengchun Mao High efficiency resonant power converters and resonant gate drivers
CN104142483B (zh) * 2013-05-07 2017-07-07 辽宁开普医疗系统有限公司 一种高压大电流小纹波梯度放大器
CN103414362B (zh) * 2013-08-23 2015-12-09 东南大学 一种基于通用电压控制策略的可编程电压波形发生设备
CN104518664B (zh) * 2013-09-29 2017-10-03 西门子(深圳)磁共振有限公司 一种磁共振成像系统及其线圈控制装置
EP2910965A1 (en) * 2014-02-19 2015-08-26 Albert-Ludwigs-Universität Freiburg Multi-channel switching system for MRI matrix gradient coils
CN105471393B (zh) 2014-09-12 2018-12-18 通用电气公司 以零电压开关及热平衡控制算法运作的开关放大器
CN105703631B (zh) * 2014-11-25 2018-12-25 上海联影医疗科技有限公司 梯度放大器功率单元、梯度放大器及磁共振成像系统
CN105703726B (zh) * 2014-11-28 2021-04-20 Ge医疗系统环球技术有限公司 功率放大器、电源装置和磁共振成像设备
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JP7248581B2 (ja) 2017-02-28 2023-03-29 ニクソア エス．アー． 外科手術用インプラントシステム
CN108173417B (zh) * 2018-01-11 2020-06-16 台达电子企业管理（上海）有限公司 梯度电源驱动级电路、梯度电源系统及其控制方法
KR102815626B1 (ko) * 2018-11-09 2025-06-02 프로드라이브 테크놀로지즈 이노베이션 서비시즈 비.브이. 플라즈마 처리 장치를 위한 전압 파형 발생기
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Also Published As

Publication number Publication date
EP0987818A2 (en) 2000-03-22
US6031746A (en) 2000-02-29
EP0987818B1 (en) 2003-12-10
DE69913454T2 (de) 2004-10-07
CN1247319A (zh) 2000-03-15
DE69913454D1 (de) 2004-01-22
JP2000092856A (ja) 2000-03-31
EP0987818A3 (en) 2002-03-20
JP4362176B2 (ja) 2009-11-11

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Legal Events

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PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19990903

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid