ATE208944T1 - Globaler beruhigungsanordnung für stationäre induktionsgeräte - Google Patents

Globaler beruhigungsanordnung für stationäre induktionsgeräte

Info

Publication number: ATE208944T1
Authority: AT; Austria
Prior art keywords: global; stationary induction; calming; arrangement; induction devices
Prior art date: 1993-09-09

Application number

AT94926620T

Other languages

English (en)

Inventor

Stephen Hildebrand

Ziqiang Hu

Original Assignee

Nct Group Inc

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.)

1993-09-09

Filing date

1994-09-02

Publication date

2001-11-15

1994-09-02 Application filed by Nct Group Inc filed Critical Nct Group Inc

2001-11-15 Application granted granted Critical

2001-11-15 Publication of ATE208944T1 publication Critical patent/ATE208944T1/de

Links

230000006698 induction Effects 0.000 title abstract 2
230000001914 calming effect Effects 0.000 title 1
238000012423 maintenance Methods 0.000 abstract 1
230000005855 radiation Effects 0.000 abstract 1

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17857—Geometric disposition, e.g. placement of microphones
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/106—Boxes, i.e. active box covering a noise source; Enclosures
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1082—Microphones, e.g. systems using "virtual" microphones
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/119—Radiation control, e.g. control of sound radiated by vibrating structures
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/125—Transformers
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/129—Vibration, e.g. instead of, or in addition to, acoustic noise
- G10K2210/1291—Anti-Vibration-Control, e.g. reducing vibrations in panels or beams
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3016—Control strategies, e.g. energy minimization or intensity measurements
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3027—Feedforward
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3036—Modes, e.g. vibrational or spatial modes
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3042—Parallel processing
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3212—Actuator details, e.g. composition or microstructure
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3214—Architectures, e.g. special constructional features or arrangements of features
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3216—Cancellation means disposed in the vicinity of the source
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3219—Geometry of the configuration
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3229—Transducers
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3229—Transducers
- G10K2210/32291—Plates or thin films, e.g. PVDF
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/50—Miscellaneous
- G10K2210/501—Acceleration, e.g. for accelerometers

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Multimedia (AREA)
Power Engineering (AREA)
Soundproofing, Sound Blocking, And Sound Damping (AREA)
Magnetic Resonance Imaging Apparatus (AREA)
Housings And Mounting Of Transformers (AREA)
Regulation Of General Use Transformers (AREA)
Casings For Electric Apparatus (AREA)
Building Environments (AREA)

AT94926620T 1993-09-09 1994-09-02 Globaler beruhigungsanordnung für stationäre induktionsgeräte ATE208944T1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US11883993A	1993-09-09	1993-09-09
PCT/US1994/009712 WO1995007530A1 (en)	1993-09-09	1994-09-02	Global quieting system for stationary induction apparatus

Publications (1)

Publication Number	Publication Date
ATE208944T1 true ATE208944T1 (de)	2001-11-15

Family

ID=22381036

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT94926620T ATE208944T1 (de)	1993-09-09	1994-09-02	Globaler beruhigungsanordnung für stationäre induktionsgeräte

Country Status (7)

Country	Link
US (1)	US5617479A (de)
EP (1)	EP0746843B1 (de)
JP (1)	JP3031635B2 (de)
AT (1)	ATE208944T1 (de)
CA (1)	CA2169967C (de)
DE (1)	DE69429111T2 (de)
WO (1)	WO1995007530A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5732143A (en)	1992-10-29	1998-03-24	Andrea Electronics Corp.	Noise cancellation apparatus
US5848169A (en) *	1994-10-06	1998-12-08	Duke University	Feedback acoustic energy dissipating device with compensator
US5754662A (en) *	1994-11-30	1998-05-19	Lord Corporation	Frequency-focused actuators for active vibrational energy control systems
US6363345B1 (en)	1999-02-18	2002-03-26	Andrea Electronics Corporation	System, method and apparatus for cancelling noise
US6594367B1 (en)	1999-10-25	2003-07-15	Andrea Electronics Corporation	Super directional beamforming design and implementation
SE0100334L (sv) *	2001-02-05	2002-08-06	Abb Technology Ag	En anordning och en metod för aktiv akustisk dämpning och användningen därav
CA2440926C (en) *	2002-09-20	2012-10-30	Isao Kakuhari	Noise control apparatus
TW200826062A (en) *	2008-01-15	2008-06-16	Asia Vital Components Co Ltd	System of inhibiting broadband noise of communication equipment room
US7854295B2 (en) *	2008-06-03	2010-12-21	Panasonic Corporation	Active noise control system
US8331577B2 (en) *	2008-07-03	2012-12-11	Hewlett-Packard Development Company, L.P.	Electronic device having active noise control with an external sensor
DE102008061552A1 (de) *	2008-12-11	2010-07-01	Areva Energietechnik Gmbh	Verfahren und Vorrichtung zur Geräuschminderung für einen elektrischen Transformator
US9020156B2 (en)	2009-07-24	2015-04-28	Siemens Aktiengesellschaft	Method for reducing the noise emission of a transformer
JP6423688B2 (ja) *	2014-11-06	2018-11-14	株式会社日立製作所	静止誘導電器
JP6631030B2 (ja) *	2015-04-23	2020-01-15	富士電機株式会社	静止誘導電器
EP3304541B1 (de) *	2015-06-06	2022-03-02	Oppenheimer, Yehuda	System und verfahren zur aktiven minderung eines vordefinierten audio-akustischen rauschens durch verwendung von synchronisationssignalen
US9646761B2 (en) *	2015-07-28	2017-05-09	Fortune Electric Co., Ltd.	Power transmission transformer with a noise inhibiting function
CN105261354B (zh) *	2015-09-09	2019-10-15	东南大学	一种有源降噪自适应主动噪声控制系统及其控制方法
TR2021019429A2 (tr) *	2021-12-08	2021-12-21	Detsa Trafo Kazan Imalati Ve Celik Konstrueksiyon Sanayi Ticaret Anonim Sirketi	Akti̇f ses ve ti̇treşi̇m azaltici bi̇r si̇stem
CN118739099B (zh) *	2024-06-04	2025-04-11	扬州市华东动力机械有限公司	一种集装箱静音电站及其噪音控制方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2776020A (en) *	1955-02-09	1957-01-01	Gen Electric	Noise reducing system for transformers
FR1494967A (fr) *	1966-08-04	1967-09-15	Centre Nat Rech Scient	Procédé électroacoustique d'absorption des sons et bruits gênants dans des zonesétendues
US4025724A (en) *	1975-08-12	1977-05-24	Westinghouse Electric Corporation	Noise cancellation apparatus
JPS5717027A (en) *	1980-07-03	1982-01-28	Hitachi Ltd	Vibration reducing device of electric machinery
JPS5827313A (ja) *	1981-08-11	1983-02-18	Hitachi Ltd	静止誘導電器の振動低減方法
JPS5895806A (ja) *	1981-12-02	1983-06-07	Hitachi Ltd	静止誘導電器の防音装置
JPS58143510A (ja) *	1982-02-20	1983-08-26	Hitachi Ltd	静止誘導電器
US5020978A (en) *	1989-11-30	1991-06-04	Nashif Ahid D	Apparatus and method for reducing vehicular fuel pump noise
US5091953A (en) *	1990-02-13	1992-02-25	University Of Maryland At College Park	Repetitive phenomena cancellation arrangement with multiple sensors and actuators
US5315661A (en) *	1992-08-12	1994-05-24	Noise Cancellation Technologies, Inc.	Active high transmission loss panel

1994
- 1994-09-02 AT AT94926620T patent/ATE208944T1/de not_active IP Right Cessation
- 1994-09-02 JP JP7508708A patent/JP3031635B2/ja not_active Expired - Fee Related
- 1994-09-02 CA CA002169967A patent/CA2169967C/en not_active Expired - Fee Related
- 1994-09-02 EP EP94926620A patent/EP0746843B1/de not_active Expired - Lifetime
- 1994-09-02 DE DE69429111T patent/DE69429111T2/de not_active Expired - Fee Related
- 1994-09-02 WO PCT/US1994/009712 patent/WO1995007530A1/en not_active Ceased
1995
- 1995-12-12 US US08/571,281 patent/US5617479A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
US5617479A (en)	1997-04-01
JP3031635B2 (ja)	2000-04-10
CA2169967C (en)	2000-04-11
CA2169967A1 (en)	1995-03-16
DE69429111T2 (de)	2002-07-11
EP0746843B1 (de)	2001-11-14
EP0746843A1 (de)	1996-12-11
EP0746843A4 (de)	1998-12-09
WO1995007530A1 (en)	1995-03-16
DE69429111D1 (de)	2001-12-20
JPH08511634A (ja)	1996-12-03

Legal Events

Date	Code	Title	Description
2002-05-15	RER	Ceased as to paragraph 5 lit. 3 law introducing patent treaties

Publication	Publication Date	Title
DE69429111D1 (de)	2001-12-20	Globaler beruhigungsanordnung für stationäre induktionsgeräte
FI20070541A7 (fi)	2007-07-10	Sähkökonelaitteisto
DE59707342D1 (de)	2002-06-27	Verfahren und anordnung zur steuerung der ausbreitung von magnetfeldern durch elektrodynamische/-magnetische wandler, insbesondere in telekommunikationsgeräten
DK0964771T3 (da)	2002-04-02	Emne-opspændingsbord
DE69130220D1 (de)	1998-10-22	Einrichtung zur übertragung von elektrischer energie und von datensignalen
GB782794A (en)	1957-09-11	Improvements relating to noise reduction applicable to electric induction apparatus and other sound sources
DE69313833D1 (de)	1997-10-16	Verringerung der Ausschaltszeit eines Ausgangsleistungstransistors
ATE138166T1 (de)	1996-06-15	Führung eines objekts auf einem schienentisch mittels einer gruppe von rollenden schienenlaufelementen
DE59205082D1 (de)	1996-02-29	Gesteuerter motor
SE9300193D0 (sv)	1993-01-22	A method and a system for communicating from the secondary side of an isolation transformer, in particular in a lamp supervision system for air field lights
NO954465L (no)	1995-11-07	Undertrykkelse av radiofrekvensutstråling
DE59707616D1 (de)	2002-08-01	Statorplatte eines linearen elektrischen direktantriebes
BR9407391A (pt)	1996-11-05	Aparelho de entrada de tecla fixa
JPS5359820A (en)	1978-05-30	Power source transformer
ATE358263T1 (de)	2007-04-15	Schutzbezug für schweissvorrichtungen
DK0584660T3 (da)	1997-04-01	Fremgangsmåde og kredsløbsindretning til reduktion af oversvingninger
CA2343903A1 (en)	2001-10-13	Controlling operation of an ac/dc converter
GB1184619A (en)	1970-03-18	Liquid-Insulated Electrical Device, particularly Transformer or Choke Coil.
IT230451Y1 (it)	1999-06-07	Custodia per cavi passanti particolarmente per il montaggio su armadi per quadri elettici
JPS5316503A (en)	1978-02-15	Light transmission unit
JPS5331988A (en)	1978-03-25	X-ray apparatus
GB1154016A (en)	1969-06-04	A Transformer Tank having a Sound-Absorbing and Sound-Damping Wall
JPS51143844A (en)	1976-12-10	Gas-insulated opening-closing apparatus
SE9704480D0 (sv)	1997-12-02	Dämpning av motors strömövertoner
ES8602333A1 (es)	1985-11-01	Control electronico para equipos con videodisco