JP2006000645A5 - - Google Patents

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Publication number
JP2006000645A5
JP2006000645A5 JP2005173542A JP2005173542A JP2006000645A5 JP 2006000645 A5 JP2006000645 A5 JP 2006000645A5 JP 2005173542 A JP2005173542 A JP 2005173542A JP 2005173542 A JP2005173542 A JP 2005173542A JP 2006000645 A5 JP2006000645 A5 JP 2006000645A5
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JP
Japan
Prior art keywords
amplifier
voltage
gradient
bridge amplifier
bridge
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
JP2005173542A
Other languages
English (en)
Japanese (ja)
Other versions
JP4732021B2 (ja
JP2006000645A (ja
Filing date
Publication date
Priority claimed from US10/867,598 external-priority patent/US7116166B2/en
Application filed filed Critical
Publication of JP2006000645A publication Critical patent/JP2006000645A/ja
Publication of JP2006000645A5 publication Critical patent/JP2006000645A5/ja
Application granted granted Critical
Publication of JP4732021B2 publication Critical patent/JP4732021B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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JP2005173542A 2004-06-15 2005-06-14 高忠実度で高出力の切り替え式増幅器 Expired - Fee Related JP4732021B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/867,598 US7116166B2 (en) 2004-06-15 2004-06-15 High fidelity, high power switched amplifier
US10/867,598 2004-06-15

Publications (3)

Publication Number Publication Date
JP2006000645A JP2006000645A (ja) 2006-01-05
JP2006000645A5 true JP2006000645A5 (cg-RX-API-DMAC7.html) 2008-07-31
JP4732021B2 JP4732021B2 (ja) 2011-07-27

Family

ID=35459875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005173542A Expired - Fee Related JP4732021B2 (ja) 2004-06-15 2005-06-14 高忠実度で高出力の切り替え式増幅器

Country Status (4)

Country Link
US (1) US7116166B2 (cg-RX-API-DMAC7.html)
JP (1) JP4732021B2 (cg-RX-API-DMAC7.html)
DE (1) DE102005027628A1 (cg-RX-API-DMAC7.html)
NL (1) NL1029240C2 (cg-RX-API-DMAC7.html)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7253625B2 (en) * 2003-02-03 2007-08-07 Koninklijke Philips Electronics N.V. Precision gradient amplifier with multiple output voltage levels
GB2441572B (en) * 2006-09-05 2009-01-28 Stream Technology Ltd M Switching amplifier
EP2099127B1 (de) * 2008-03-05 2014-08-13 Ampegon AG Hochspannungsmodulator mit Transformator
EP2304455B1 (en) 2008-07-11 2019-03-06 Koninklijke Philips N.V. Digital amplifier with feedforward and feedback control
EP2234237A1 (en) * 2009-03-26 2010-09-29 ABB Research Ltd. Method for controlling single-phase DC/AC converters and converter arrangement
EP2234263A1 (en) 2009-03-27 2010-09-29 Koninklijke Philips Electronics N.V. A power supply, method, and computer program product for supplying electrical power to a load
US8760164B2 (en) * 2010-01-29 2014-06-24 General Electric Company Magnetic resonant imaging gradient driver architecture
EP2583114B1 (en) * 2010-06-17 2015-11-04 Koninklijke Philips N.V. Gradient coil power supply and magnetic resonance imaging system
DE112011104465T5 (de) 2010-12-20 2014-02-06 Philips Intellectual Property & Standards Gmbh Verfahren und Digitalverstärkersystem zum Betrieb eines MRI-Gradientenmagnetsystems
US8502539B2 (en) 2011-03-31 2013-08-06 General Electric Company Gradient amplifier system
US9013187B2 (en) * 2011-06-16 2015-04-21 General Electric Company Balanced mixer for MRI system with a hub, intermediate frequency, oscillator, and pre-amp circuitry coupled together
WO2013046099A1 (en) 2011-09-27 2013-04-04 Koninklijke Philips Electronics N.V. Gradient amplifier with compensation for dead time and forward voltage
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
CN103222867B (zh) * 2012-01-31 2016-12-07 Ge医疗系统环球技术有限公司 体部/头部线圈切换方法、功率放大器组件和mri系统
RU2626026C2 (ru) * 2012-07-25 2017-07-21 Конинклейке Филипс Н.В. Градиентный усилитель mri, работающий при различных скоростях нарастания
US9389288B2 (en) 2012-09-14 2016-07-12 General Electric Company System and method for maintaining soft switching condition in a gradient coil driver circuit
KR101491658B1 (ko) * 2013-04-25 2015-02-09 주식회사 피에스텍 스위칭 증폭기 장치 및 그 제어 방법
NL2011648C2 (en) 2013-10-18 2015-04-23 Prodrive B V Switched power converter.
EP2910965A1 (en) * 2014-02-19 2015-08-26 Albert-Ludwigs-Universität Freiburg Multi-channel switching system for MRI matrix gradient coils
DE102015214925B4 (de) * 2014-09-11 2019-06-06 Siemens Healthcare Gmbh Verfahren zum Betrieb einer Magnetresonanzeinrichtung und Magnetresonanzeinrichtung
CN105591537B (zh) * 2014-10-28 2019-02-22 通用电气公司 梯度放大器、开关放大器及其操作方法
US10033263B2 (en) * 2015-06-26 2018-07-24 Board Of Trustees Of Michigan State University System and method for optimizing fundamental frequency modulation for a cascaded multilevel inverter
US9807863B1 (en) * 2016-06-09 2017-10-31 Advanced Energy Industries, Inc. Switching amplifier
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
EP3550319A1 (en) * 2018-04-05 2019-10-09 Koninklijke Philips N.V. Emulation mode for mri
CN109001659A (zh) * 2018-06-06 2018-12-14 上海东软医疗科技有限公司 一种梯度放大器及核磁共振成像设备

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Publication number Priority date Publication date Assignee Title
US3581212A (en) * 1969-07-31 1971-05-25 Gen Electric Fast response stepped-wave switching power converter circuit
US5270657A (en) * 1992-03-23 1993-12-14 General Electric Company Split gradient amplifier for an MRI system
JPH07313489A (ja) * 1994-05-30 1995-12-05 Toshiba Corp 傾斜磁場電源装置
US5663647A (en) * 1995-12-29 1997-09-02 General Electric Company Switching gradient amplifier with adjustable DC bus voltage
DE19709767C1 (de) * 1997-03-10 1998-04-23 Siemens Ag Verfahren zum Ansteuern mehrerer Schaltendstufen, Ansteuereinrichtung und Leistungsverstärker
JPH10314140A (ja) * 1997-05-15 1998-12-02 Hitachi Medical Corp 磁気共鳴イメージング装置
DE19812069B4 (de) 1998-03-19 2005-07-07 Siemens Ag Leistungsverstärker und Verfahren zum Erzeugen von Steuersignalen für einen Leistungsverstärker
DE19824767C2 (de) * 1998-06-03 2000-05-18 Siemens Ag Verfahren zum Erzeugen von Steuersignalen für einen Leistungsverstärker und Leistungsverstärker
US6031746A (en) 1998-09-04 2000-02-29 General Electric Company Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils
US6172558B1 (en) * 1999-09-02 2001-01-09 Siemens Aktiengesellschaft Switching amplifier and method for operating same
US6166602A (en) * 1999-09-27 2000-12-26 General Electric Company High-efficiency switching power amplifier
JP3499235B1 (ja) * 2002-08-28 2004-02-23 株式会社フライングモール スイッチング回路及びディジタル電力増幅器

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