DE69226340D1 - Leistungssystem zum Parallelbetrieb von Wechselstrom-Gleichstrom-Umwandlern - Google Patents

Leistungssystem zum Parallelbetrieb von Wechselstrom-Gleichstrom-Umwandlern

Info

Publication number
DE69226340D1
DE69226340D1 DE69226340T DE69226340T DE69226340D1 DE 69226340 D1 DE69226340 D1 DE 69226340D1 DE 69226340 T DE69226340 T DE 69226340T DE 69226340 T DE69226340 T DE 69226340T DE 69226340 D1 DE69226340 D1 DE 69226340D1
Authority
DE
Germany
Prior art keywords
converters
power system
parallel operation
parallel
power
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 - Fee Related
Application number
DE69226340T
Other languages
English (en)
Other versions
DE69226340T2 (de
Inventor
Randhir Singh Malik
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69226340D1 publication Critical patent/DE69226340D1/de
Publication of DE69226340T2 publication Critical patent/DE69226340T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/17—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/001—Hot plugging or unplugging of load or power modules to or from power distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/102—Parallel operation of dc sources being switching converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/106—Parallel operation of dc sources for load balancing, symmetrisation, or sharing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/108—Parallel operation of dc sources using diodes blocking reverse current flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Rectifiers (AREA)
  • Control Of Voltage And Current In General (AREA)
DE69226340T 1991-12-17 1992-11-28 Leistungssystem zum Parallelbetrieb von Wechselstrom-Gleichstrom-Umwandlern Expired - Fee Related DE69226340T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/809,562 US5319536A (en) 1991-12-17 1991-12-17 Power system for parallel operation of AC/DC convertrs

Publications (2)

Publication Number Publication Date
DE69226340D1 true DE69226340D1 (de) 1998-08-27
DE69226340T2 DE69226340T2 (de) 1999-03-25

Family

ID=25201625

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226340T Expired - Fee Related DE69226340T2 (de) 1991-12-17 1992-11-28 Leistungssystem zum Parallelbetrieb von Wechselstrom-Gleichstrom-Umwandlern

Country Status (4)

Country Link
US (1) US5319536A (de)
EP (1) EP0547418B1 (de)
JP (1) JP2667345B2 (de)
DE (1) DE69226340T2 (de)

Families Citing this family (102)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5424934A (en) * 1992-11-12 1995-06-13 Oki Electric Industry Co., Ltd. Multivoltage power supply and control method thereof
FR2720558B1 (fr) * 1994-05-31 1996-06-21 Cit Alcatel Système d'alimentation sécurisé.
KR970000258B1 (ko) * 1994-09-28 1997-01-08 삼성전자 주식회사 컴퓨터의 전원공급 제어장치
FR2730104A1 (fr) * 1995-01-27 1996-08-02 Thomcast Alimentation continue a correcteur de facteur de puissance et convertisseur a decoupage utilisable dans une telle alimentation
DE19506405C1 (de) * 1995-02-23 1996-03-07 Siemens Nixdorf Inf Syst Stromversorgungseinrichtung
US5602464A (en) * 1995-07-24 1997-02-11 Martin Marietta Corp. Bidirectional power converter modules, and power system using paralleled modules
US5672958A (en) * 1995-11-14 1997-09-30 Dell Usa L.P. Method and apparatus for modifying feedback sensing for a redundant power supply system
US5740023A (en) * 1996-05-24 1998-04-14 Lucent Technologies Inc. Control system for a modular power supply and method of operation thereof
JP3647554B2 (ja) * 1996-07-12 2005-05-11 株式会社東芝 Ｘ線高電圧装置
US5801522A (en) * 1996-09-26 1998-09-01 Compaq Computer Corporation Power limit circuit for computer system
JPH10150733A (ja) * 1996-11-19 1998-06-02 Meidensha Corp 防災用電源システム
US5834925A (en) * 1997-05-08 1998-11-10 Cisco Technology, Inc. Current sharing power supplies with redundant operation
DE19722125A1 (de) * 1997-05-27 1998-12-03 Siemens Nixdorf Inf Syst Schaltungsanordnung einer Stromversorgungseinheit
JP3505068B2 (ja) * 1997-10-24 2004-03-08 富士通株式会社 同期整流式ｄｃ−ｄｃコンバータ
JP3230052B2 (ja) * 1998-03-23 2001-11-19 有限会社フィデリックス 電源装置
US5986909A (en) * 1998-05-21 1999-11-16 Robicon Corporation Multiphase power supply with plural series connected cells and failed cell bypass
FI107418B (fi) 1998-05-22 2001-07-31 Muuntolaite Oy Menetelmä ja laitteisto teholähdejärjestelmän ohjaamiseksi
US6087738A (en) * 1998-08-20 2000-07-11 Robicon Corporation Variable output three-phase transformer
US6262555B1 (en) 1998-10-02 2001-07-17 Robicon Corporation Apparatus and method to generate braking torque in an AC drive
US6081437A (en) * 1998-12-03 2000-06-27 Shin Jiuh Corp. Load balancer for a power supplying system
US6181027B1 (en) 1999-02-26 2001-01-30 International Business Machine Corp. DC power distribution
US7301313B1 (en) * 1999-03-23 2007-11-27 Intel Corporation Multiple voltage regulators for use with a single load
US6046917A (en) * 1999-05-03 2000-04-04 Eaton Corporation Controlled rectifier bridge and system
SE517020C2 (sv) * 1999-09-10 2002-04-02 Emerson Energy Systems Ab Förfarande och anordning för att förbättra uteffektkapaciteten i en kraftanläggning
US6157555A (en) * 1999-11-09 2000-12-05 International Business Machines Corporation Current limiter responsive to changing parallel power supply capacity
US6278624B1 (en) * 1999-12-01 2001-08-21 Hewlett-Packard Company High availability DC power supply with isolated inputs, diode-or-connected outputs, and power factor correction
AU2432701A (en) * 1999-12-16 2001-06-25 Mcandrews Enterprises Inc. Spare bus power plant
US20010024109A1 (en) * 2000-02-21 2001-09-27 Mark Sobkow Power supply system
JP3696470B2 (ja) * 2000-02-22 2005-09-21 富士通株式会社 Ｄｃ−ｄｃ変換回路、電源選択回路、および機器装置
US6320771B1 (en) 2000-04-10 2001-11-20 International Business Machines Corporation Fault tolerant active current sharing
US6356470B1 (en) * 2000-04-29 2002-03-12 Hewlett-Packard Company Dual input, hot swappable dual redundant, enhanced N+1 AC to DC power system
US6317346B1 (en) * 2000-11-09 2001-11-13 At&T Corporation Redundant multiphase power supplies for common load device
US6344985B1 (en) * 2000-12-05 2002-02-05 Heart Transverter S.A. Multiple port bi-directional power converter
US6348781B1 (en) * 2000-12-11 2002-02-19 Motorola, Inc. Buck or boost power converter
TWI269518B (en) * 2001-04-06 2006-12-21 Delta Electronics Inc Power supply system having AC redundant and function of protecting AC power form electricity-inversed plug-in
TW561676B (en) * 2001-04-06 2003-11-11 Delta Electronics Inc Power supply device having an AC redundant function
US6621180B2 (en) * 2001-04-20 2003-09-16 International Business Machines Corporation Method and system for maintaining full power during a power interruption in a multiple power supply system
KR20020084401A (ko) * 2001-04-30 2002-11-07 삼성전기주식회사 부하 분배 회로
JP4057260B2 (ja) 2001-08-07 2008-03-05 株式会社日立製作所 電源回路、電源システム、および電子装置
US6614132B2 (en) * 2001-11-30 2003-09-02 Beacon Power Corporation Multiple flywheel energy storage system
US6737763B2 (en) * 2001-12-17 2004-05-18 Cloudshield Technologies, Inc. Intelligent load sharing with power limiting scheme for multiple power supplies connected to a common load
US6661119B2 (en) 2001-12-17 2003-12-09 Cloudshield Technologies, Inc. System and method for distributed power supply supporting high currents with redundancy
US6664660B2 (en) * 2002-01-04 2003-12-16 Delta Electronics, Inc. Parallel power supply system with over-voltage protection circuit
DE10214190B4 (de) * 2002-03-28 2011-06-30 Minebea Co., Ltd. Stromversorgung mit mehreren parallel geschalteten Schaltnetzteilen
US6747369B2 (en) * 2002-08-22 2004-06-08 Intel Corporation Power system including redundant power supplies
US20040109374A1 (en) * 2002-09-12 2004-06-10 Rajagopalan Sundar Failure tolerant parallel power source configuration
US7202645B2 (en) * 2003-01-09 2007-04-10 Audio Note Uk Ltd. Regulated power supply unit
KR100601640B1 (ko) * 2003-07-04 2006-07-14 삼성전자주식회사 전원회로 보호장치
US6967854B2 (en) * 2003-10-30 2005-11-22 Asm Assembly Automation Ltd. Configurable power supply system for machine components
US6903946B1 (en) * 2003-11-04 2005-06-07 Lockheed Martin Corporation Paralleled power factor correcting AC-to-DC converters with improved current balance
EP1706936A1 (de) * 2004-01-09 2006-10-04 Philips Intellectual Property & Standards GmbH Dezentralisiertes stromerzeugungssystem
CN100386940C (zh) * 2004-05-28 2008-05-07 富士电机机器制御株式会社 电力系统
US20050286191A1 (en) * 2004-06-28 2005-12-29 Pieter Vorenkamp Power supply integrated circuit with multiple independent outputs
WO2006022675A1 (en) * 2004-07-30 2006-03-02 Raytheon Company Method and apparatus for a power system for phased-array radar
US7477037B2 (en) * 2005-08-12 2009-01-13 Siemens Energy & Automation, Inc. Method for parallel control of series-cell based drives
FR2911847B1 (fr) * 2007-01-31 2009-10-23 Hispano Suiza Sa Circuit d'alimentation en energie electrique pour des equipements electriques d'un moteur d'aeronef
CN101471567B (zh) * 2007-12-25 2012-05-02 艾默生网络能源系统北美公司 一种并联通信电源系统及其控制方法
US20090168469A1 (en) * 2007-12-28 2009-07-02 International Business Machines Corporation Apparatus, system, and method for a low cost fault-tolerant power supply
JP5282424B2 (ja) * 2008-03-14 2013-09-04 ダイキン工業株式会社 整流回路
JP4666010B2 (ja) * 2008-06-12 2011-04-06 セイコーエプソン株式会社 負荷駆動回路及びインクジェットプリンター
US7847435B2 (en) 2008-07-16 2010-12-07 International Business Machines Corporation Intrinsically balanced direct current uninterruptible power supply
US8223518B2 (en) * 2008-10-01 2012-07-17 Harris Corporation Multiple phase power supply having current shared power factor correction
US8093956B2 (en) * 2009-01-12 2012-01-10 Honeywell International Inc. Circuit for adjusting the temperature coefficient of a resistor
US8546977B2 (en) * 2009-04-22 2013-10-01 Lsi Corporation Voltage based switching of a power supply system current
KR101023336B1 (ko) * 2009-07-03 2011-03-18 삼성전기주식회사 로드 쉐어링 장치 및 이를 구비한 병렬 전원 공급 장치
US20110095612A1 (en) * 2009-10-22 2011-04-28 William Kirkpatrick Method and apparatus to combine and condition AC power from multiple sources
US20110227412A1 (en) * 2010-03-22 2011-09-22 Jian Xu Dc voltage distribution system
KR101134854B1 (ko) 2010-05-17 2012-04-13 엘지전자 주식회사 전압 보상 공급 장치
US8856557B2 (en) * 2010-06-03 2014-10-07 International Business Machines Corporation Digital power balancing controller
US20120007426A1 (en) * 2010-07-08 2012-01-12 Thompson Steve A Multiple DC power generation systems common load coupler
DE102010035112B4 (de) 2010-08-23 2018-06-14 Fujitsu Ltd. Regelschaltung für ein Hilfsnetzteil und Netzteilanordnung
US8447275B2 (en) * 2010-12-03 2013-05-21 Microchip Technology Incorporated Lossless inductor current sensing in a switch-mode power supply
US9018930B2 (en) 2010-12-23 2015-04-28 Stmicroelectronics S.R.L. Current generator for temperature compensation
EP2479059A1 (de) * 2011-01-19 2012-07-25 Power Research Electronics B.v. Batterieladegerat für elektrische Fahrzeuge
JP5842465B2 (ja) * 2011-08-29 2016-01-13 株式会社リコー 電源装置
ITMI20111594A1 (it) * 2011-09-05 2013-03-06 St Microelectronics Srl Regolatore di tensione a commutazione
US9891679B2 (en) * 2011-12-22 2018-02-13 Astec International Limited Single phase redundant power supply systems for reducing phase current imbalances
CN103259423B (zh) * 2012-02-16 2015-09-02 台达电子企业管理（上海）有限公司 三相ac-dc变换电路、变换方法及其控制系统
JP5964617B2 (ja) * 2012-03-13 2016-08-03 東芝三菱電機産業システム株式会社 無停電電源システム
US9991703B1 (en) * 2012-03-31 2018-06-05 Western Digital Technologies, Inc. Dual wall input for network attached storage device
CN103516219B (zh) * 2012-06-15 2017-06-30 西门子（中国）有限公司 直流电源模块的控制电路
US9712080B2 (en) * 2013-03-14 2017-07-18 Astec International Limited Reducing phase current imbalances in single phase redundant power supply systems with unbalanced loads
GB201308107D0 (en) 2013-05-05 2013-06-12 Rodrigues Paulo A Dual external DC power brick/transformer splitter to provide seamless cutover redundant power supply to a single powered device
CN104184315A (zh) * 2013-05-22 2014-12-03 海洋王（东莞）照明科技有限公司 一种供电控制电路及供电装置
US9331522B2 (en) * 2013-08-29 2016-05-03 Etasis Electronics Corporation Backup power supplying device having programmable current-balancing control
JP2015055980A (ja) * 2013-09-11 2015-03-23 日本電信電話株式会社 故障検出回路、故障検出方法および電源システム
KR101435631B1 (ko) 2013-09-25 2014-08-28 계명대학교 산학협력단 스위칭모드 전원장치의 병렬연결 회로 장치 및 그 제어 방법
DE102014102535B4 (de) * 2013-12-20 2022-03-17 Fujitsu Client Computing Limited Netzteil für ein Computersystem sowie Anordnung mit einem entsprechenden Netzteil und einem Computersystem
CN104166449A (zh) * 2014-06-30 2014-11-26 浪潮(北京)电子信息产业有限公司 一种多电源并联工作的装置及方法
US9660439B2 (en) 2015-06-05 2017-05-23 General Electric Company Direct current power distribution and protection system
AT517434A1 (de) * 2015-06-29 2017-01-15 Lunatone Ind Elektronik Gmbh Netzteil zur energieversorgung eines digitalen drahtgebundenen informationsbussystems
US9991701B2 (en) 2015-10-15 2018-06-05 General Electric Company Direct current power distribution and conversion system
CN105450053B (zh) * 2015-12-31 2018-08-31 重庆瑜欣平瑞电子股份有限公司 汽油机并联整流调压控制电路
WO2018061796A1 (ja) * 2016-09-28 2018-04-05 株式会社村田製作所 電源システム
CN106411111B (zh) * 2016-11-11 2020-06-16 深圳爱克莱特科技股份有限公司 均衡电源并联输出电压的方法及电源装置
US10069407B1 (en) 2017-03-02 2018-09-04 Hewlett Packard Enterprise Development Lp Converters to convert input voltages to output voltages
JP6943668B2 (ja) * 2017-07-28 2021-10-06 ローム株式会社 電子機器
JP7136568B2 (ja) * 2018-03-06 2022-09-13 Ｎｅｃプラットフォームズ株式会社 三相交流給電システム、三相交流給電システムの制御方法および三相交流給電システムの制御プログラム
EP3754806A1 (de) * 2019-06-19 2020-12-23 UTC Fire & Security EMEA BVBA Stromversorgungsvorrichtung
WO2021255868A1 (ja) * 2020-06-17 2021-12-23 三菱電機株式会社 電力変換システム
US11677234B2 (en) * 2021-08-20 2023-06-13 Hamilton Sundstrand Corporation Power input source detection in aircraft LRU
TWI846322B (zh) * 2022-10-20 2024-06-21 正崴精密工業股份有限公司 電壓平衡電路

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808452A (en) * 1973-06-04 1974-04-30 Gte Automatic Electric Lab Inc Power supply system having redundant d. c. power supplies
US4013938A (en) * 1974-12-24 1977-03-22 General Electric Company Power supply system for providing uninterrupted output power
US3988661A (en) * 1974-12-24 1976-10-26 General Electric Company Power supply system for generating constant power under maximum current conditions
US4035716A (en) * 1976-03-31 1977-07-12 Gte Automatic Electric Laboratories Incorporated Super compensated voltage control of redundant D.C. power supplies
US4074182A (en) * 1976-12-01 1978-02-14 General Electric Company Power supply system with parallel regulators and keep-alive circuitry
DE2754846C2 (de) * 1977-12-09 1983-06-09 Dornier System Gmbh, 7990 Friedrichshafen Schaltungsanordnung zur definierten Stromaufteilung zwischen parallel geschalteten Schaltregler-Leistungsstufen in einem Gleichspannungsschaltregler
DE2755510C3 (de) * 1977-12-13 1981-01-29 Siemens Ag, 1000 Berlin Und 8000 Muenchen Stromversorgungseinrichtung mit ausgangsseitig parallelgeschalteten spannungsgeregelten Stromversorgungsgeräten
JPS54156143A (en) * 1978-05-31 1979-12-08 Fujitsu Ltd Power source system
IT1166875B (it) * 1979-06-12 1987-05-06 Sits Soc It Telecom Siemens Disposizione circuitale per la gestione del parallelo tra una pluralita' di alimentatori
JPS5736580A (en) * 1980-08-13 1982-02-27 Hitachi Ltd Protecting method for converter
JPS58112467A (ja) * 1981-12-26 1983-07-04 Toshiba Corp スイツチングレギユレ−タ
DE3330039A1 (de) * 1983-08-19 1985-02-28 Siemens AG, 1000 Berlin und 8000 München Sperrwandler-schaltnetzteil
US4628433A (en) * 1985-12-30 1986-12-09 Gte Communication Systems Corp. Control circuit for diode-or connected power supplies
US4860188A (en) * 1988-05-02 1989-08-22 Texas Instruments Incorporated Redundant power supply control
US5036452A (en) * 1989-12-28 1991-07-30 At&T Bell Laboratories Current sharing control with limited output voltage range for paralleled power converters

Also Published As

Publication number Publication date
US5319536A (en) 1994-06-07
EP0547418A2 (de) 1993-06-23
EP0547418A3 (en) 1993-12-15
EP0547418B1 (de) 1998-07-22
JP2667345B2 (ja) 1997-10-27
DE69226340T2 (de) 1999-03-25
JPH05236680A (ja) 1993-09-10

Similar Documents

Publication Publication Date Title
DE69226340D1 (de) Leistungssystem zum Parallelbetrieb von Wechselstrom-Gleichstrom-Umwandlern
DE69126540D1 (de) Kraftwandler
DE69217109D1 (de) System zum Parallelbetrieb von Wechselrichtern
DE69316711D1 (de) Leistungswandler
DE69301848D1 (de) Überbrückungsschaltung für Wechselstrom/Gleichstrom-Umwandler
DE69323830D1 (de) System für Parallelschaltung von Energiewandleren
DE69311971D1 (de) Spannungserhöhender Leistungswandler
DE69210940D1 (de) Leistungsumrichter
KR900008752A (ko) 전력변환장치
DE69211815D1 (de) Leistungswandlungssystem
DK174087D0 (da) Angiotensinkonverterende enzyminhibitor
DE69326923D1 (de) Parallel-Serien-Umsetzer
DE3668393D1 (de) Kraftloser beruehrungsfreier leistungstransformator.
DE3685194D1 (de) Einrichtung zum schalten von gleichgerichtetem wechselstrom.
AT399791B (de) Stromrichter
DE69400381D1 (de) Selbstgeführte Spannungskonvertierungseinrichtung
DE59302389D1 (de) Stromwandler
AT386694B (de) Transformator
DE59409807D1 (de) Schaltungsanordnung zum Gleichrichten von Wechselspannungssignalen
KR890018262U (ko) Dc/ac 전원변환회로
ATA7085A (de) Spannungsumsetzanlage
DK479986D0 (da) Straemforsyningsapparat
AT383917B (de) Dc/ac-wandler
KR880008797U (ko) Ac-ac변환기용 무정전 전원 장치
DK0422397T3 (da) Switch-mode transformer

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee