DE69119848T2 - Festfrequenter Einrichtungsdurchlassumformer mit Nullspannungsschaltung - Google Patents
Festfrequenter Einrichtungsdurchlassumformer mit NullspannungsschaltungInfo
- Publication number
- DE69119848T2 DE69119848T2 DE69119848T DE69119848T DE69119848T2 DE 69119848 T2 DE69119848 T2 DE 69119848T2 DE 69119848 T DE69119848 T DE 69119848T DE 69119848 T DE69119848 T DE 69119848T DE 69119848 T2 DE69119848 T2 DE 69119848T2
- Authority
- DE
- Germany
- Prior art keywords
- zero voltage
- voltage switching
- fixed frequency
- way transmission
- transmission converter
- 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
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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33561—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having more than one ouput with independent control
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC converters
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/579,470 US5126931A (en) | 1990-09-07 | 1990-09-07 | Fixed frequency single ended forward converter switching at zero voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69119848D1 DE69119848D1 (de) | 1996-07-04 |
| DE69119848T2 true DE69119848T2 (de) | 1997-01-16 |
Family
ID=24317034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69119848T Expired - Lifetime DE69119848T2 (de) | 1990-09-07 | 1991-09-04 | Festfrequenter Einrichtungsdurchlassumformer mit Nullspannungsschaltung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5126931A (de) |
| EP (1) | EP0474471B1 (de) |
| DE (1) | DE69119848T2 (de) |
Families Citing this family (96)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE36098E (en) * | 1982-02-04 | 1999-02-16 | Vlt Corporation | Optimal resetting of the transformer's core in single-ended forward converters |
| US5448469A (en) * | 1990-02-15 | 1995-09-05 | Deutsche Thomson-Brandt Gmbh | Switch mode power supply with output feedback isolation |
| US5231563A (en) * | 1990-09-07 | 1993-07-27 | Itt Corporation | Square wave converter having an improved zero voltage switching operation |
| US5173846A (en) * | 1991-03-13 | 1992-12-22 | Astec International Ltd. | Zero voltage switching power converter |
| JP3199423B2 (ja) * | 1991-11-01 | 2001-08-20 | オリジン電気株式会社 | 共振形フォワードコンバ−タ |
| JP3419797B2 (ja) * | 1992-01-10 | 2003-06-23 | 松下電器産業株式会社 | スイッチング電源装置 |
| DE59207433D1 (de) * | 1992-03-09 | 1996-11-28 | Siemens Ag | Schaltender Gleichspannungswandler |
| US5224025A (en) * | 1992-04-21 | 1993-06-29 | Wisconsin Alumni Research Foundation | Forward converter with two active switches and unity power factor capability |
| DE4313359A1 (de) * | 1992-04-24 | 1993-10-28 | Matsushita Electric Ind Co Ltd | Schaltnetzteil |
| US5325283A (en) * | 1992-06-08 | 1994-06-28 | Center For Innovative Technology | Novel zero-voltage-switching family of isolated converters |
| US5341278A (en) * | 1992-08-20 | 1994-08-23 | Brooks Steven W | Switching pulsed resonant DC-DC converter power amplifier |
| DE4328458B4 (de) * | 1992-08-25 | 2005-09-22 | Matsushita Electric Industrial Co., Ltd., Kadoma | Schalt-Spannungsversorgung |
| US5327333A (en) * | 1992-11-25 | 1994-07-05 | At&T Bell Laboratories | Push push DC-DC reduced/zero voltage switching converter with off-set tapped secondary winding |
| US5402329A (en) * | 1992-12-09 | 1995-03-28 | Ernest H. Wittenbreder, Jr. | Zero voltage switching pulse width modulated power converters |
| US5363289A (en) * | 1992-12-15 | 1994-11-08 | At&T Bell Laboratories | Control apparatus for limiting voltage on a core reset capacitor |
| DE69302461T2 (de) * | 1992-12-15 | 1996-09-05 | At & T Corp | Spannungssteuerschaltungen |
| US5521807A (en) * | 1992-12-31 | 1996-05-28 | Interpoint Corporation | DC-To-DC converter with secondary flyback core reset |
| US5434768A (en) * | 1993-02-12 | 1995-07-18 | Rompower | Fixed frequency converter switching at zero voltage |
| DE59306269D1 (de) * | 1993-02-24 | 1997-05-28 | Siemens Ag | Sperrwandler-Schaltnetzteil mit einem Halbleiterschaltelement geringer Spannungsfestigkeit |
| US5490055A (en) * | 1993-03-03 | 1996-02-06 | At&T Corp. | Multiloop feedback control apparatus for DC/DC converters with frequency-shaping band pass current control |
| ES2056747B1 (es) * | 1993-03-31 | 1997-10-16 | Alcatel Standard Electrica | Circuito de conversion de continua-continua. |
| US5625541A (en) * | 1993-04-29 | 1997-04-29 | Lucent Technologies Inc. | Low loss synchronous rectifier for application to clamped-mode power converters |
| US5303138A (en) * | 1993-04-29 | 1994-04-12 | At&T Bell Laboratories | Low loss synchronous rectifier for application to clamped-mode power converters |
| US5450029A (en) * | 1993-06-25 | 1995-09-12 | At&T Corp. | Circuit for estimating a peak or RMS value of a sinusoidal voltage waveform |
| US5391976A (en) * | 1993-07-28 | 1995-02-21 | At&T Corp. | Power factor control arrangement for an OLS based on quarter cycle averaged power flow |
| US5457620A (en) * | 1993-07-30 | 1995-10-10 | At&T Ipm Corp. | Current estimating circuit for switch mode power supply |
| US5831838A (en) * | 1993-08-16 | 1998-11-03 | Avionics Instruments, Inc. | Resonant fly-forward converter circuit |
| US5446366A (en) * | 1994-02-08 | 1995-08-29 | Computer Products, Inc. | Boost converter power supply with reduced losses, control circuit and method therefor |
| US5570278A (en) * | 1994-02-25 | 1996-10-29 | Astec International, Ltd. | Clamped continuous flyback power converter |
| US5796595A (en) * | 1994-02-25 | 1998-08-18 | Astec International Limited | Interleaved continuous flyback power converter system |
| US5612862A (en) * | 1994-05-06 | 1997-03-18 | Alcatel Network Systems, Inc. | Method and circuitry for controlling current reset characteristics of a magnetic amplifier control circuit |
| ES2105957B1 (es) * | 1994-12-30 | 1998-06-01 | Alcatel Standard Electrica | Convertidor multisalida de energia continua-continua. |
| EP1278295A3 (de) | 1995-01-17 | 2004-12-29 | VLT, Inc. | Steuerung der gespeicherten magnetischen Energie in Stromwandlertransformatoren |
| US5712772A (en) * | 1995-02-03 | 1998-01-27 | Ericsson Raynet | Controller for high efficiency resonant switching converters |
| US5694304A (en) * | 1995-02-03 | 1997-12-02 | Ericsson Raynet Corporation | High efficiency resonant switching converters |
| TW291620B (de) * | 1995-05-10 | 1996-11-21 | Philips Electronics Nv | |
| US5638260A (en) * | 1995-05-19 | 1997-06-10 | Electronic Measurements, Inc. | Parallel resonant capacitor charging power supply operating above the resonant frequency |
| US5590032A (en) | 1995-05-25 | 1996-12-31 | Lucent Technologies Inc. | Self-synchronized drive circuit for a synchronous rectifier in a clamped-mode power converter |
| US5631822A (en) * | 1995-08-24 | 1997-05-20 | Interpoint Corporation | Integrated planar magnetics and connector |
| US5663876A (en) * | 1995-09-25 | 1997-09-02 | Lucent Technologies Inc. | Circuit and method for achieving zero ripple current in the output of a converter |
| US5600546A (en) * | 1995-10-16 | 1997-02-04 | Computer Products, Inc. | Input harmonic current corrected AC-to-DC converter with multiple coupled primary windings |
| US5652700A (en) * | 1995-10-16 | 1997-07-29 | Computer Products, Inc. | Low cost AC-to-DC converter having input current with reduced harmonics |
| US5754416A (en) * | 1995-10-31 | 1998-05-19 | Samsung Electro-Mechanics Co., Ltd. | Single soft switching circuit for power supply |
| JP3512540B2 (ja) * | 1995-11-22 | 2004-03-29 | オリジン電気株式会社 | スイッチング電源及びその制御方法 |
| US5875103A (en) * | 1995-12-22 | 1999-02-23 | Electronic Measurements, Inc. | Full range soft-switching DC-DC converter |
| US5754413A (en) * | 1996-02-23 | 1998-05-19 | Lucent Technologies Inc. | Reduced voltage stress asymmetrical DC-to-DC converter using first and second transformers having differing turns ratios |
| US5781420A (en) * | 1996-07-18 | 1998-07-14 | International Power Devices, Inc. | Single ended forward DC-to-DC converter providing enhanced resetting for synchronous rectification |
| US5973939A (en) * | 1996-08-29 | 1999-10-26 | Trw Inc. | Double forward converter with soft-PWM switching |
| US5808879A (en) * | 1996-12-26 | 1998-09-15 | Philips Electronics North America Corporatin | Half-bridge zero-voltage-switched PWM flyback DC/DC converter |
| US7269034B2 (en) | 1997-01-24 | 2007-09-11 | Synqor, Inc. | High efficiency power converter |
| US5838552A (en) * | 1997-04-01 | 1998-11-17 | Lucent Technologies Inc | Asymmetrical power converter and method of operation thereof |
| US6038146A (en) * | 1997-06-13 | 2000-03-14 | Computer Products, Incorporated | High power factors, single stage harmonics correction converter |
| KR100455651B1 (ko) * | 1997-08-08 | 2005-01-17 | 삼성전자주식회사 | 다중출력 직류/직류 전압 변환장치 및 이를 이용한 액정 표시 장치 |
| US6081432A (en) * | 1998-05-26 | 2000-06-27 | Artesyn Technologies, Inc. | Active reset forward converter employing synchronous rectifiers |
| US6069802A (en) * | 1998-07-31 | 2000-05-30 | Priegnitz; Robert A. | Transformer isolated driver and isolated forward converter |
| CA2270816C (en) | 1999-05-03 | 2003-12-23 | Argus Technologies Ltd. | Zero voltage switching buck derived converter |
| US6304463B1 (en) | 1999-05-07 | 2001-10-16 | Power-One, Inc. | Single-ended forward converter circuit with quasi-optimal resetting for synchronous rectification |
| EP1069675A1 (de) * | 1999-07-15 | 2001-01-17 | MAGNETEK S.p.A. | Gleichrichter |
| US6282107B1 (en) * | 2000-03-07 | 2001-08-28 | Vlt Corporation | Integrated sense and switch circuitry for transformer core resetting |
| EP1225680B1 (de) * | 2001-01-22 | 2009-11-11 | STMicroelectronics S.r.l. | Schaltnetzteil |
| US6545883B2 (en) | 2001-05-07 | 2003-04-08 | Artesyn Technologies, Inc. | Integrated boost-asymmetrical half-bridge converter |
| US7012820B2 (en) | 2001-12-21 | 2006-03-14 | Det International Holding Limited | Forward converter with controlled reset |
| US6538906B1 (en) * | 2002-02-11 | 2003-03-25 | Delta Electronics, Inc. | Energy storage circuit for DC-DC converter |
| US7009850B2 (en) | 2002-04-12 | 2006-03-07 | Det International Holding Limited | Soft switching converter using current shaping |
| JP4124231B2 (ja) * | 2002-10-21 | 2008-07-23 | サンケン電気株式会社 | 直流変換装置 |
| JP4111220B2 (ja) * | 2003-07-16 | 2008-07-02 | サンケン電気株式会社 | 直流変換装置 |
| JP4175367B2 (ja) * | 2003-08-11 | 2008-11-05 | サンケン電気株式会社 | スイッチング電源装置 |
| US7095638B2 (en) * | 2003-09-03 | 2006-08-22 | Tyco Electronics Power Systems, Inc. | Controller for complementary switches of a power converter and method of operation thereof |
| JP5162982B2 (ja) * | 2007-07-13 | 2013-03-13 | 富士電機株式会社 | スイッチング電源装置 |
| US8169796B2 (en) * | 2007-12-21 | 2012-05-01 | Murata Manufacturing Co., Ltd. | Isolated switching power supply apparatus |
| JP5770412B2 (ja) * | 2008-01-31 | 2015-08-26 | ダイキン工業株式会社 | 電力変換装置 |
| US20110157919A1 (en) * | 2009-12-30 | 2011-06-30 | Yeshoda Yedevelly | Vcc generator for switching regulator |
| US9343971B2 (en) * | 2009-12-30 | 2016-05-17 | Silicon Laboratories Inc. | Synchronous VCC generator for switching voltage regulator |
| KR20110138068A (ko) * | 2010-06-18 | 2011-12-26 | 페어차일드코리아반도체 주식회사 | 역률 보상 컨버터 및 그 구동 방법 |
| US8593830B2 (en) * | 2010-06-29 | 2013-11-26 | Maxim Integrated Products, Inc. | Reverse current limit protection for active clamp converters |
| JP5552949B2 (ja) | 2010-08-03 | 2014-07-16 | 株式会社豊田自動織機 | アクティブクランプ型ｄｃｄｃコンバータ |
| US8520410B2 (en) | 2010-11-09 | 2013-08-27 | Flextronics Ap, Llc | Virtual parametric high side MOSFET driver |
| US8743565B2 (en) * | 2012-07-27 | 2014-06-03 | Flextronics Ap, Llc | High power converter architecture |
| EP2693620A2 (de) * | 2012-08-03 | 2014-02-05 | Samsung Electro-Mechanics Co., Ltd. | Einstufiger Durchfluss-/Sperrwandler und Stromversorgungsvorrichtung |
| US9605860B2 (en) | 2012-11-02 | 2017-03-28 | Flextronics Ap, Llc | Energy saving-exhaust control and auto shut off system |
| US9660540B2 (en) | 2012-11-05 | 2017-05-23 | Flextronics Ap, Llc | Digital error signal comparator |
| US9323267B2 (en) | 2013-03-14 | 2016-04-26 | Flextronics Ap, Llc | Method and implementation for eliminating random pulse during power up of digital signal controller |
| US9494658B2 (en) | 2013-03-14 | 2016-11-15 | Flextronics Ap, Llc | Approach for generation of power failure warning signal to maximize useable hold-up time with AC/DC rectifiers |
| US9490651B2 (en) | 2013-03-15 | 2016-11-08 | Flextronics Ap, Llc | Sweep frequency mode for magnetic resonant power transmission |
| US10199950B1 (en) | 2013-07-02 | 2019-02-05 | Vlt, Inc. | Power distribution architecture with series-connected bus converter |
| US9077254B2 (en) * | 2013-07-12 | 2015-07-07 | Solantro Semiconductor Corp. | Switching mode power supply using pulse mode active clamping |
| US20160094132A1 (en) * | 2014-04-08 | 2016-03-31 | Marco Antonio Davila | Optimum Offline Converter Control Using Intelligent Power Processing |
| FR3020523B1 (fr) * | 2014-04-29 | 2016-05-06 | Valeo Systemes De Controle Moteur | Alimentation electrique et procede de commande d'une alimentation electrique |
| DE102014208880B4 (de) * | 2014-05-12 | 2016-09-01 | Continental Automotive Gmbh | Treiberschaltung für eine Induktivität und aktive Sendeeinrichtung mit einer Treiberschaltung |
| GB2534348A (en) * | 2014-11-21 | 2016-07-27 | Reinhausen Maschf Scheubeck | Active Snubber |
| US9673718B2 (en) | 2015-05-07 | 2017-06-06 | Infineon Technologies Austria Ag | Voltage conversion method and voltage converter |
| US10651748B2 (en) | 2017-10-12 | 2020-05-12 | Rompower Technology Holdings, Llc | Energy recovery from the leakage inductance of the transformer |
| US10972014B2 (en) | 2017-10-12 | 2021-04-06 | Rompower Technology Holdings, Llc | High efficiency passive clamp |
| IL255948A (en) * | 2017-11-27 | 2018-01-31 | Abramovici Tal | Direct current / constant frequency direct current converter |
| TWI732581B (zh) * | 2020-06-03 | 2021-07-01 | 亞源科技股份有限公司 | 具減震控制之轉換裝置及其減震控制的操作方法 |
| DE102021201103A1 (de) | 2021-02-05 | 2022-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Gleichspannungswandler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3582758A (en) * | 1969-09-30 | 1971-06-01 | Ibm | Rectifier using low saturation voltage transistors |
| US3940682A (en) * | 1973-10-15 | 1976-02-24 | General Electric Company | Rectifier circuits using transistors as rectifying elements |
| US3909700A (en) * | 1974-01-18 | 1975-09-30 | Gen Electric | Monolithic semiconductor rectifier circuit structure |
| CA1069177A (en) * | 1976-07-21 | 1980-01-01 | Gte Lenkurt Electric (Canada) Ltd. | Constant current series-switching regulator |
| US4246634A (en) * | 1979-03-07 | 1981-01-20 | Ann Arbor Terminals, Inc. | Start-up circuit for switch mode power supply |
| US4323962A (en) * | 1981-02-02 | 1982-04-06 | General Electric Company | High efficiency rectifier with multiple outputs |
| JPS57138867A (en) * | 1981-02-17 | 1982-08-27 | Toshiba Corp | Voltage resonance type high frequency switching circuit |
| JPS57138868A (en) * | 1981-02-17 | 1982-08-27 | Toshiba Corp | Voltage resonance type high frequency switching circuit |
| US4415959A (en) * | 1981-03-20 | 1983-11-15 | Vicor Corporation | Forward converter switching at zero current |
| US4386394A (en) * | 1981-05-20 | 1983-05-31 | General Electric Company | Single phase and three phase AC to DC converters |
| US4451876A (en) * | 1981-06-19 | 1984-05-29 | Hitachi Metals, Ltd. | Switching regulator |
| US4441146A (en) * | 1982-02-04 | 1984-04-03 | Vicor Corporation | Optimal resetting of the transformer's core in single ended forward converters |
| US4519024A (en) * | 1983-09-02 | 1985-05-21 | At&T Bell Laboratories | Two-terminal transistor rectifier circuit arrangement |
| US4680687A (en) * | 1984-08-07 | 1987-07-14 | Siemens Aktiengesellschaft | Switch-mode power supply having a free-running forward converter |
| US4716514A (en) * | 1984-12-13 | 1987-12-29 | Unitrode Corporation | Synchronous power rectifier |
| EP0471421B1 (de) * | 1984-12-28 | 1996-05-22 | Kabushiki Kaisha Toshiba | Stabilisierende Leistungsquellenvorrichtung |
| EP0191482B1 (de) * | 1985-02-12 | 1990-07-25 | Hitachi Metals, Ltd. | Gleichstromwandler |
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| US4760512A (en) * | 1986-06-11 | 1988-07-26 | American Telephone And Telegraph Company, At&T Bell Laboratories | Circuit for reducing transistor stress and resetting the transformer core of a power converter |
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| US4809148A (en) * | 1987-10-21 | 1989-02-28 | British Columbia Telephone Company | Full-fluxed, single-ended DC converter |
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| US4931716A (en) * | 1989-05-05 | 1990-06-05 | Milan Jovanovic | Constant frequency zero-voltage-switching multi-resonant converter |
| US4931920A (en) * | 1989-06-16 | 1990-06-05 | Ncr Corporation | Circuit and method for regulating output voltage of a switch mode power supply having a current mode magnetic amplifier |
| US4975821A (en) * | 1989-10-10 | 1990-12-04 | Lethellier Patrice R | High frequency switched mode resonant commutation power supply |
| US4959764A (en) * | 1989-11-14 | 1990-09-25 | Computer Products, Inc. | DC/DC converter switching at zero voltage |
-
1990
- 1990-09-07 US US07/579,470 patent/US5126931A/en not_active Expired - Fee Related
-
1991
- 1991-09-04 DE DE69119848T patent/DE69119848T2/de not_active Expired - Lifetime
- 1991-09-04 EP EP91308081A patent/EP0474471B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5126931A (en) | 1992-06-30 |
| EP0474471B1 (de) | 1996-05-29 |
| EP0474471A3 (en) | 1992-05-27 |
| DE69119848D1 (de) | 1996-07-04 |
| EP0474471A2 (de) | 1992-03-11 |
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Owner name: C&D CHARTER HOLDINGS, INC., WILMINGTON, DEL., US |