WO2006124893A3 - Two-wire dimmer with power supply and load protection circuit in the event of switch failure - Google Patents

Two-wire dimmer with power supply and load protection circuit in the event of switch failure Download PDF

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Publication number
WO2006124893A3
WO2006124893A3 PCT/US2006/018909 US2006018909W WO2006124893A3 WO 2006124893 A3 WO2006124893 A3 WO 2006124893A3 US 2006018909 W US2006018909 W US 2006018909W WO 2006124893 A3 WO2006124893 A3 WO 2006124893A3
Authority
WO
WIPO (PCT)
Prior art keywords
switch
load
voltage source
controller
voltage
Prior art date
Application number
PCT/US2006/018909
Other languages
French (fr)
Other versions
WO2006124893A2 (en
Inventor
Russikesh Kumar
Stuart Dejonge
David J Dolan
Original Assignee
Lutron Electronics Co
Russikesh Kumar
Stuart Dejonge
David J Dolan
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 Lutron Electronics Co, Russikesh Kumar, Stuart Dejonge, David J Dolan filed Critical Lutron Electronics Co
Priority to CN2006800169846A priority Critical patent/CN101176386B/en
Priority to JP2008512441A priority patent/JP4634506B2/en
Priority to MX2007014286A priority patent/MX2007014286A/en
Priority to EP06770435.3A priority patent/EP1884141B1/en
Priority to CA2608743A priority patent/CA2608743C/en
Priority to BRPI0612430-5A priority patent/BRPI0612430A2/en
Publication of WO2006124893A2 publication Critical patent/WO2006124893A2/en
Publication of WO2006124893A3 publication Critical patent/WO2006124893A3/en
Priority to HK08108927.3A priority patent/HK1118169A1/en

Links

Classifications

    • 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
    • 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

Abstract

A dimmer circuit for providing AC power from an AC voltage source to an inductive lighting load disposed in series with the dimmer circuit, comprising: a bidirectional semiconductor switch having at least one control electrode provided with a control signal for controlling the amount of power provided to the load, the switch in normal operation being able to be controlled to block voltage in first and second opposite polarity half-cycles of the AC voltage source but in a failure mode being able to block the AC voltage source in only one polarity half-cycle of the AC voltage source and not being able to block the AC voltage source in the second opposite polarity half-cycle; a controller for the switch for determining if said failure mode of the switch occurs which can cause an asymmetry between the half-cycles delivered to the load and thus a DC voltage component to be delivered to the load; a power supply for supplying power to the controller and provided with power across the dimmer circuit; the controller controlling the switch if such failure mode occurs so as to: drive the switch into substantially full conduction during most of the half-cycle which the switch is able to control; and drive the switch into non-conduction for a brief duration of time during that same half-cycle so as to prevent a DC voltage component supplied to the load from exceeding a predetermined level below which excessive transformer heating does not occur, thereby minimizing overheating of the inductive load and enabling the power supply for the controller to be provided with sufficient voltage from the AC voltage source to enable the controller to continue to operate.
PCT/US2006/018909 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure WO2006124893A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN2006800169846A CN101176386B (en) 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure
JP2008512441A JP4634506B2 (en) 2005-05-16 2006-05-16 2-wire dimmer with load protection circuit in case of power supply and switch failure
MX2007014286A MX2007014286A (en) 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure.
EP06770435.3A EP1884141B1 (en) 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure
CA2608743A CA2608743C (en) 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure
BRPI0612430-5A BRPI0612430A2 (en) 2005-05-16 2006-05-16 illumination dimmer circuit to provide ac power from an ac voltage source to an inductive illumination load arranged in series with the dimmer circuit and method of operation
HK08108927.3A HK1118169A1 (en) 2005-05-16 2008-08-12 Two-wire dimmer with power supply and load protection circuit in the event of switch failure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/129,793 US7190124B2 (en) 2005-05-16 2005-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure
US11/129,793 2005-05-16

Publications (2)

Publication Number Publication Date
WO2006124893A2 WO2006124893A2 (en) 2006-11-23
WO2006124893A3 true WO2006124893A3 (en) 2007-03-22

Family

ID=37418486

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/018909 WO2006124893A2 (en) 2005-05-16 2006-05-16 Two-wire dimmer with power supply and load protection circuit in the event of switch failure

Country Status (9)

Country Link
US (1) US7190124B2 (en)
EP (1) EP1884141B1 (en)
JP (1) JP4634506B2 (en)
CN (1) CN101176386B (en)
BR (1) BRPI0612430A2 (en)
CA (1) CA2608743C (en)
HK (1) HK1118169A1 (en)
MX (1) MX2007014286A (en)
WO (1) WO2006124893A2 (en)

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Also Published As

Publication number Publication date
JP4634506B2 (en) 2011-02-16
US7190124B2 (en) 2007-03-13
WO2006124893A2 (en) 2006-11-23
JP2008541407A (en) 2008-11-20
BRPI0612430A2 (en) 2012-05-22
EP1884141A2 (en) 2008-02-06
CN101176386A (en) 2008-05-07
CN101176386B (en) 2010-12-22
US20060255746A1 (en) 2006-11-16
EP1884141A4 (en) 2014-04-16
CA2608743A1 (en) 2006-11-23
CA2608743C (en) 2011-11-01
EP1884141B1 (en) 2015-09-02
MX2007014286A (en) 2008-02-07
HK1118169A1 (en) 2009-01-30

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