ATE308819T1 - Lampentransformator für den gebrauch mit einem elektronischen dimmer und verfahren für dessen gebrauch zur verringerung akustischen rauschens - Google Patents

Lampentransformator für den gebrauch mit einem elektronischen dimmer und verfahren für dessen gebrauch zur verringerung akustischen rauschens

Info

Publication number
ATE308819T1
ATE308819T1 AT02755612T AT02755612T ATE308819T1 AT E308819 T1 ATE308819 T1 AT E308819T1 AT 02755612 T AT02755612 T AT 02755612T AT 02755612 T AT02755612 T AT 02755612T AT E308819 T1 ATE308819 T1 AT E308819T1
Authority
AT
Austria
Prior art keywords
leading edge
controller
acoustic noise
edge
responsive
Prior art date
Application number
AT02755612T
Other languages
English (en)
Inventor
Joshua Patchornik
Shaul Barak
Original Assignee
Lightech Electronics Ind Ltd
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 Lightech Electronics Ind Ltd filed Critical Lightech Electronics Ind Ltd
Application granted granted Critical
Publication of ATE308819T1 publication Critical patent/ATE308819T1/de

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
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
    • H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
    • H02M5/22—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/293—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • H05B39/044—Controlling the light-intensity of the source continuously
    • H05B39/048—Controlling the light-intensity of the source continuously with reverse phase control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Dc-Dc Converters (AREA)
AT02755612T 2002-01-10 2002-08-13 Lampentransformator für den gebrauch mit einem elektronischen dimmer und verfahren für dessen gebrauch zur verringerung akustischen rauschens ATE308819T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL147578A IL147578A (en) 2002-01-10 2002-01-10 Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise
PCT/IL2002/000666 WO2003058801A1 (en) 2002-01-10 2002-08-13 Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise

Publications (1)

Publication Number Publication Date
ATE308819T1 true ATE308819T1 (de) 2005-11-15

Family

ID=11075936

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02755612T ATE308819T1 (de) 2002-01-10 2002-08-13 Lampentransformator für den gebrauch mit einem elektronischen dimmer und verfahren für dessen gebrauch zur verringerung akustischen rauschens

Country Status (9)

Country Link
US (1) US6713974B2 (de)
EP (1) EP1466400B1 (de)
CN (1) CN100440707C (de)
AT (1) ATE308819T1 (de)
AU (1) AU2002321816A1 (de)
CA (1) CA2472234C (de)
DE (1) DE60207113T2 (de)
IL (1) IL147578A (de)
WO (1) WO2003058801A1 (de)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315473A1 (de) * 2003-04-04 2004-10-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schnittstellenschaltung zum Betrieb von kapazitiven Lasten
IL163558A0 (en) 2004-08-16 2005-12-18 Lightech Electronics Ind Ltd Controllable power supply circuit for an illumination system and methods of operation thereof
US7262554B2 (en) * 2004-10-16 2007-08-28 Osram Sylvania Inc. Lamp with integral voltage converter having phase-controlled dimming circuit with hysteresis control for reducing RMS load voltage
US7330364B2 (en) * 2004-10-20 2008-02-12 Supertex, Inc. Device for converting high voltage alternating current (AC) to low voltage direct current (DC) and method therefor
DE102005041077A1 (de) * 2005-08-30 2007-03-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zur Betriebssteuerung eines elektronischen Transformators
US8362838B2 (en) * 2007-01-19 2013-01-29 Cirrus Logic, Inc. Multi-stage amplifier with multiple sets of fixed and variable voltage rails
US7667408B2 (en) * 2007-03-12 2010-02-23 Cirrus Logic, Inc. Lighting system with lighting dimmer output mapping
US20080224631A1 (en) * 2007-03-12 2008-09-18 Melanson John L Color variations in a dimmable lighting device with stable color temperature light sources
US7288902B1 (en) 2007-03-12 2007-10-30 Cirrus Logic, Inc. Color variations in a dimmable lighting device with stable color temperature light sources
US8018171B1 (en) 2007-03-12 2011-09-13 Cirrus Logic, Inc. Multi-function duty cycle modifier
US7804256B2 (en) * 2007-03-12 2010-09-28 Cirrus Logic, Inc. Power control system for current regulated light sources
US8076920B1 (en) 2007-03-12 2011-12-13 Cirrus Logic, Inc. Switching power converter and control system
US7554473B2 (en) * 2007-05-02 2009-06-30 Cirrus Logic, Inc. Control system using a nonlinear delta-sigma modulator with nonlinear process modeling
US7696913B2 (en) 2007-05-02 2010-04-13 Cirrus Logic, Inc. Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection
US8102127B2 (en) * 2007-06-24 2012-01-24 Cirrus Logic, Inc. Hybrid gas discharge lamp-LED lighting system
US7804697B2 (en) * 2007-12-11 2010-09-28 Cirrus Logic, Inc. History-independent noise-immune modulated transformer-coupled gate control signaling method and apparatus
IL188348A0 (en) 2007-12-24 2008-11-03 Lightech Electronics Ind Ltd Controller and method for controlling an intensity of a light emitting diode (led) using a conventional ac dimmer
US8576589B2 (en) 2008-01-30 2013-11-05 Cirrus Logic, Inc. Switch state controller with a sense current generated operating voltage
US7755525B2 (en) * 2008-01-30 2010-07-13 Cirrus Logic, Inc. Delta sigma modulator with unavailable output values
US8022683B2 (en) 2008-01-30 2011-09-20 Cirrus Logic, Inc. Powering a power supply integrated circuit with sense current
US8008898B2 (en) * 2008-01-30 2011-08-30 Cirrus Logic, Inc. Switching regulator with boosted auxiliary winding supply
US8274241B2 (en) * 2008-02-06 2012-09-25 C. Crane Company, Inc. Light emitting diode lighting device
US8350499B2 (en) * 2008-02-06 2013-01-08 C. Crane Company, Inc. High efficiency power conditioning circuit for lighting device
US7759881B1 (en) 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US8008902B2 (en) * 2008-06-25 2011-08-30 Cirrus Logic, Inc. Hysteretic buck converter having dynamic thresholds
US8847719B2 (en) * 2008-07-25 2014-09-30 Cirrus Logic, Inc. Transformer with split primary winding
US8344707B2 (en) 2008-07-25 2013-01-01 Cirrus Logic, Inc. Current sensing in a switching power converter
US8212491B2 (en) 2008-07-25 2012-07-03 Cirrus Logic, Inc. Switching power converter control with triac-based leading edge dimmer compatibility
US8487546B2 (en) * 2008-08-29 2013-07-16 Cirrus Logic, Inc. LED lighting system with accurate current control
US8179110B2 (en) * 2008-09-30 2012-05-15 Cirrus Logic Inc. Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation
US8222872B1 (en) 2008-09-30 2012-07-17 Cirrus Logic, Inc. Switching power converter with selectable mode auxiliary power supply
US8288954B2 (en) * 2008-12-07 2012-10-16 Cirrus Logic, Inc. Primary-side based control of secondary-side current for a transformer
US8362707B2 (en) * 2008-12-12 2013-01-29 Cirrus Logic, Inc. Light emitting diode based lighting system with time division ambient light feedback response
US8299722B2 (en) 2008-12-12 2012-10-30 Cirrus Logic, Inc. Time division light output sensing and brightness adjustment for different spectra of light emitting diodes
US7994863B2 (en) * 2008-12-31 2011-08-09 Cirrus Logic, Inc. Electronic system having common mode voltage range enhancement
US8358085B2 (en) 2009-01-13 2013-01-22 Terralux, Inc. Method and device for remote sensing and control of LED lights
US9326346B2 (en) 2009-01-13 2016-04-26 Terralux, Inc. Method and device for remote sensing and control of LED lights
US8482223B2 (en) 2009-04-30 2013-07-09 Cirrus Logic, Inc. Calibration of lamps
US8963535B1 (en) 2009-06-30 2015-02-24 Cirrus Logic, Inc. Switch controlled current sensing using a hall effect sensor
US8212493B2 (en) 2009-06-30 2012-07-03 Cirrus Logic, Inc. Low energy transfer mode for auxiliary power supply operation in a cascaded switching power converter
US8248145B2 (en) 2009-06-30 2012-08-21 Cirrus Logic, Inc. Cascode configured switching using at least one low breakdown voltage internal, integrated circuit switch to control at least one high breakdown voltage external switch
US8198874B2 (en) * 2009-06-30 2012-06-12 Cirrus Logic, Inc. Switching power converter with current sensing transformer auxiliary power supply
US8222832B2 (en) * 2009-07-14 2012-07-17 Iwatt Inc. Adaptive dimmer detection and control for LED lamp
US9155174B2 (en) 2009-09-30 2015-10-06 Cirrus Logic, Inc. Phase control dimming compatible lighting systems
US8203277B2 (en) * 2009-10-26 2012-06-19 Light-Based Technologies Incorporated Efficient electrically isolated light sources
US8598804B2 (en) * 2009-10-26 2013-12-03 Light-Based Technologies Incorporated Apparatus and method for LED light control
US8654483B2 (en) 2009-11-09 2014-02-18 Cirrus Logic, Inc. Power system having voltage-based monitoring for over current protection
JP2013517613A (ja) * 2009-11-17 2013-05-16 テララックス， インコーポレイテッド Ｌｅｄ電源の検出および制御
CN102238774B (zh) * 2010-04-30 2016-06-01 奥斯兰姆有限公司 导通角获取方法和装置，以及led驱动方法和装置
US8729811B2 (en) 2010-07-30 2014-05-20 Cirrus Logic, Inc. Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element
US8536799B1 (en) 2010-07-30 2013-09-17 Cirrus Logic, Inc. Dimmer detection
US8569972B2 (en) 2010-08-17 2013-10-29 Cirrus Logic, Inc. Dimmer output emulation
CN103155387B (zh) 2010-07-30 2016-10-19 皇家飞利浦有限公司 从基于三端可控硅调光器给高效照明装置供电
US9307601B2 (en) 2010-08-17 2016-04-05 Koninklijke Philips N.V. Input voltage sensing for a switching power converter and a triac-based dimmer
US8610365B2 (en) 2010-11-04 2013-12-17 Cirrus Logic, Inc. Switching power converter input voltage approximate zero crossing determination
WO2012027507A2 (en) 2010-08-24 2012-03-01 Cirrus Logic, Inc. Multi-mode dimmer interfacing including attach state control
WO2012037436A1 (en) 2010-09-16 2012-03-22 Terralux, Inc. Communication with lighting units over a power bus
US9596738B2 (en) 2010-09-16 2017-03-14 Terralux, Inc. Communication with lighting units over a power bus
CN103262399B (zh) 2010-11-04 2017-02-15 皇家飞利浦有限公司 用于控制开关功率转换器中的能量消耗的方法和装置
EP2636136A2 (de) 2010-11-04 2013-09-11 Cirrus Logic, Inc. Gesteuerte verlustleistung bei einem schaltweg in einem beleuchtungssystem
EP2636135B1 (de) 2010-11-04 2017-01-11 Philips Lighting Holding B.V. Sondierung des tastverhältnisses eines triac-dimmers
EP2681969B1 (de) 2010-11-16 2019-01-09 Philips Lighting Holding B.V. Austrittskantendimmerkompatibilität mit hoher dimmerwiderstandsprognose
US9025347B2 (en) 2010-12-16 2015-05-05 Cirrus Logic, Inc. Switching parameter based discontinuous mode-critical conduction mode transition
DE102011105444A1 (de) * 2011-06-24 2012-12-27 Abb Ag Dimmer-Schaltung für das Phasenanschnitt-Verfahren
ES2717895T3 (es) 2011-06-30 2019-06-26 Signify Holding Bv Circuito de iluminación LED aislado por transformador con control de atenuación de lado secundario
EP2792059B1 (de) 2011-12-14 2020-07-15 Signify Holding B.V. Isolierung eines sekundären transformatorwicklungsstroms während der erzeugung von hilfsstrom
US8896231B2 (en) 2011-12-16 2014-11-25 Terralux, Inc. Systems and methods of applying bleed circuits in LED lamps
US9510425B1 (en) 2012-02-22 2016-11-29 Theodore G. Nelson Driving circuit for light emitting diode apparatus and method of operation
WO2013126836A1 (en) 2012-02-22 2013-08-29 Cirrus Logic, Inc. Mixed load current compensation for led lighting
US9167664B2 (en) 2012-07-03 2015-10-20 Cirrus Logic, Inc. Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
US9215770B2 (en) 2012-07-03 2015-12-15 Philips International, B.V. Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
US9184661B2 (en) 2012-08-27 2015-11-10 Cirrus Logic, Inc. Power conversion with controlled capacitance charging including attach state control
US9215765B1 (en) 2012-10-26 2015-12-15 Philips International, B.V. Systems and methods for low-power lamp compatibility with an electronic transformer
US9273858B2 (en) 2012-12-13 2016-03-01 Phillips International, B.V. Systems and methods for low-power lamp compatibility with a leading-edge dimmer and an electronic transformer
US9496844B1 (en) 2013-01-25 2016-11-15 Koninklijke Philips N.V. Variable bandwidth filter for dimmer phase angle measurements
US10187934B2 (en) 2013-03-14 2019-01-22 Philips Lighting Holding B.V. Controlled electronic system power dissipation via an auxiliary-power dissipation circuit
US9263964B1 (en) 2013-03-14 2016-02-16 Philips International, B.V. Systems and methods for low-power lamp compatibility with an electronic transformer
US9282598B2 (en) 2013-03-15 2016-03-08 Koninklijke Philips N.V. System and method for learning dimmer characteristics
JP6103478B2 (ja) * 2013-03-22 2017-03-29 東芝ライテック株式会社 電源回路及び照明装置
JP6617099B2 (ja) 2013-05-13 2019-12-04 シグニファイ ホールディング ビー ヴィ 低電圧照明のための安定化回路
US9265119B2 (en) 2013-06-17 2016-02-16 Terralux, Inc. Systems and methods for providing thermal fold-back to LED lights
US9635723B2 (en) 2013-08-30 2017-04-25 Philips Lighting Holding B.V. Systems and methods for low-power lamp compatibility with a trailing-edge dimmer and an electronic transformer
CN104753508A (zh) * 2013-12-30 2015-07-01 上海普锐马电子有限公司 一种高压大电流电子开关
US9621062B2 (en) 2014-03-07 2017-04-11 Philips Lighting Holding B.V. Dimmer output emulation with non-zero glue voltage
US9215772B2 (en) 2014-04-17 2015-12-15 Philips International B.V. Systems and methods for minimizing power dissipation in a low-power lamp coupled to a trailing-edge dimmer
US9385598B2 (en) 2014-06-12 2016-07-05 Koninklijke Philips N.V. Boost converter stage switch controller
US10033269B2 (en) * 2016-04-29 2018-07-24 Infineon Technologies Austria Ag Voltage doubler with capacitor module for increasing capacitance
US10033264B2 (en) 2016-04-29 2018-07-24 Infineon Technologies Austria Ag Bulk capacitor switching for power converters

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5319301A (en) * 1984-08-15 1994-06-07 Michael Callahan Inductorless controlled transition and other light dimmers
US4962344A (en) * 1989-05-23 1990-10-09 Advanced Micro Devices, Inc. Segmented waveform generator
US5004969A (en) * 1989-10-16 1991-04-02 Bayview Technology Group, Inc. Phase control switching circuit without zero crossing detection
JPH0689784A (ja) * 1991-06-18 1994-03-29 Entertainment Technol Inc 低騒音調光器
US6010310A (en) * 1996-08-08 2000-01-04 Pass & Seymour, Inc. Fan controller for reducing harmonic fluxuations that produces audible sounds
DE19731700A1 (de) * 1997-07-23 1999-01-28 Hermann Guenter Lochbihler Dimmer
US6031749A (en) * 1999-03-31 2000-02-29 Vari-Lite, Inc. Universal power module
CN1133356C (zh) * 2000-10-24 2003-12-31 复旦大学 后沿相位控制调光器

Also Published As

Publication number Publication date
CA2472234A1 (en) 2003-07-17
AU2002321816A1 (en) 2003-07-24
IL147578A (en) 2006-06-11
EP1466400B1 (de) 2005-11-02
CN1623271A (zh) 2005-06-01
US20030127994A1 (en) 2003-07-10
WO2003058801A1 (en) 2003-07-17
DE60207113D1 (de) 2005-12-08
US6713974B2 (en) 2004-03-30
EP1466400A1 (de) 2004-10-13
HK1069262A1 (en) 2005-05-13
DE60207113T2 (de) 2006-07-13
CN100440707C (zh) 2008-12-03
CA2472234C (en) 2007-07-10
IL147578A0 (en) 2002-08-14

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