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WO/2012/057928 |
A ballast or drive circuit (120) is located between a dimmer switch (130) and at least one light source or lamp (140). The ballast includes an electromagnetic interference (EMI) filter (150) operatively disposed between the dimmer switch...
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WO/2012/056340 |
A method ofoperating a flashlamp (2) in a skin treatment system (1) comprises the steps of establishing a conductive path between the flashlamp (2) and a charged capacitor (4) causing a free discharge within the flashlamp, and interrupti...
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WO/2012/050752 |
A ballast circuit (6) comprises a rectifier circuit (8) and dual starting circuits (11, 13) that ensure ballast startup and lamp ignition regardless of input waveform half cycle. The first starting circuit comprises resonant circuit (10)...
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WO/2012/048495 |
A driving circuit for a backlight module of display device and a driving method thereof are provided. The driving method comprises following steps: a phase detector (153) detects the voltage phase of an inductance and a capacitance in a ...
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WO/2012/049196 |
The invention relates to an operating device (1) for at least one luminous element (2), comprising a means for measuring a temperature (T) present in the operating device (1) or in the surroundings of the operating device, at least one i...
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WO/2012/047397 |
A ballast and method are presented for detecting end-of-life conditions of fluorescent lamps in which a ballast output is controlled according to a dimming input when a DC voltage or current of the lamp is in a predefined range or when t...
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WO/2012/045555 |
The invention describes an operating device (1) for at least one lighting means (6), having a control circuit (5) which adjusts or controls at least one parameter which influences temperature development in the operating device (1), and ...
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WO/2012/044932 |
An electrodeless plasma lamp is provided. The lamp includes a conductive enclosure including a dielectric material (e.g., air) and a bulb containing a fill to form a light emitting plasma. A radio frequency (RF) power source is coupled i...
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WO/2012/042412 |
An apparatus (1100, 2000, 3000) executes an algorithm (2000) to determine a type of lamp (10) that is installed in a lighting unit (1000). The apparatus supplies power to the installed lamp (10) according to a first power control setting...
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WO/2012/038232 |
The present application provides a ballast and an illumination system including the same. The ballast includes at least two start control units, each configured to be connected with a corresponding lamp and output a start signal accordin...
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WO/2012/038233 |
The present invention provides a circuit and a method for preheating filaments and a ballast. The circuit for preheating filaments includes: a transistor; a first winding, one terminal of which being electrically connected with a collect...
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WO/2012/037973 |
The invention relates to a method for starting a high-pressure discharge lamp by means of a starter having a starting capacitor, a starting switch and a starting transformer, said method comprising the following temporally successive ste...
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WO/2012/034931 |
The invention relates to a method for operating a gas discharge lamp (10) of a motor vehicle headlamp, wherein the gas discharge lamp (10) is operated in a first operating mode at a comparatively higher power and alternating voltage and ...
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WO/2012/031435 |
A stabilization circuit for electronic transformer driven LED devices. The circuit is provided at an output of an electronic transformer driving circuit, which has a rectifier fed into a feedback-controlled oscillator circuit. An isolati...
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WO/2012/032647 |
During low-power operation of an electronic device, which has a discharge lamp and a lamp power supply unit that provides electric power to the discharge lamp, by a control unit lighting the lamp at a lower electric power than the rating...
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WO/2012/031935 |
The invention relates to a circuit arrangement and to a method for starting and operating a high-pressure discharge lamp, having a half-bridge arrangement with a half-bridge centre point, said half-bridge arrangement being connected to a...
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WO/2012/029172 |
This projection display device (100) is a projection display device for projecting image light on the basis of an image signal, and comprises a lamp (13), a display element (15) which modulates light emitted from the lamp according to th...
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WO/2012/025626 |
The invention relates to luminaires, especially luminaires to be operated in lamp holders for fluorescent lamps. In order to prevent individuals from experiencing electric shocks when inserting a luminaire, for example in the lamp holder...
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WO/2012/022555 |
The invention proposes a circuit comprising at least one Y-capacitor, comprising at least one damping element which is arranged parallel to the Y-capacitor. A network filter, an operating device and a lighting apparatus or lamp having a ...
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WO/2012/022384 |
The invention relates to a self-ballasted electrodeless lamp comprising a bulb accommodating an induction coil, a ballast circuit for applying a high-frequency signal to the induction coil and a lamp socket is disclosed. The lamp socket ...
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WO/2012/023694 |
Disclosed is a lighting device including a one-touch dimmer switch. In particular, the present invention discloses a technology where a manager which controls the dimming rate and a user using the dimmer switch regulate the operating ran...
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WO/2012/024295 |
An electronic ballast for driving a gas discharge lamp comprises an inverter circuit, a resonant tank circuit, and a control circuit operable to determine an approximation of a resonant frequency of the resonant tank circuit and to contr...
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WO/2012/024383 |
An electronic ballast having an inverter circuit for driving a gas discharge lamp prevents allows some hard switching to occur in the inverter circuit in order to ensure adequate ballasting impedance to provide stable operation of the la...
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WO/2012/020047 |
An operating appliance for lighting means, in particular of an electronic ballast for gas discharge lamps, has a power factor correction circuit (PFC) for reducing harmonics when the input current is being drawn. In this case, current is...
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WO/2012/019857 |
The invention relates to a method for extending the life of a high-pressure discharge lamp, having a gas discharge lamp burner made of quartz glass which is operated at an electrical power P(t) which varies over time, wherein the electri...
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WO/2012/019935 |
The invention relates to a method for operating a high-pressure discharge lamp outside the nominal power range thereof, wherein at a lamp power less than 85% of the nominal power or at a lamp power greater than 110% of the nominal power ...
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WO/2012/019857 |
The invention relates to a method for extending the life of a high-pressure discharge lamp, having a gas discharge lamp burner made of quartz glass which is operated at an electrical power P(t) which varies over time, wherein the electri...
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WO/2012/016895 |
Proposed is a luminous device (209), comprising at least two lamps (206, 207, 208), wherein each lamp (206, 207, 208) has a drive unit (203, 204, 205), wherein at least two dimming states of a lamp (206, 207, 208) are settable using at l...
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WO/2012/011863 |
A flash apparatus comprising at least two flash tubes and at least two energy storage units is presented, wherein each of said at least two energy storage units is being arranged to be configured to strictly correspond to one of the at l...
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WO/2012/011288 |
Disclosed is a lighting circuit which is for a lamp that uses an LED as a light source, and which facilitates design of a resonance circuit. A lighting circuit (11) of a lamp, which uses as a light source a light-emission section (39) co...
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WO/2012/012499 |
Optical reader systems (10) and methods for determining the presence and/or amount of analytes in a fluid sample are described. The optical reader (10) for performing a diagnostic test on a test sample comprises a cassette receiving memb...
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WO/2012/007779 |
An electronic ballast for arc lighting sources for balanced power driving, arc lighting source, and power control system, making possible longer working life by regulating the functioning of arc lighting sources, as well as more economic...
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WO/2012/007953 |
An electronic ballast is disclosed, which is used for self ballasted lamps and other gas discharged lamps with or without filaments. Size of all the components of the circuit can be verified; the circuit functions at variable voltages an...
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WO/2012/007714 |
To the common point C of two transistors of a magnetron, switched converter power circuit is connected a coupling capacitor C11 which provides input to a starter circuit (24). A transistor switch (25) is in series with the capacitor C11 ...
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WO/2012/007498 |
The present invention relates to a starting circuit for a high-pressure gas discharge lamp LA. Said starting circuit has a half-bridge, which is formed by two clocked switches S3 and S4 and generates an AC voltage from a DC voltage UG. T...
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WO/2012/009353 |
Embodiments of the invention provide an apparatus, method, and program product to control a lamp system. The apparatus comprises a plasma lamp bulb (20) and a microwave generator (12) operable to generate a microwave energy field to exci...
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WO/2012/004695 |
The invention relates to a lamp driver for supplying an HID lamp equipped with input terminals for connection to a supply source, a circuit part I coupled to the input terminals for igniting the lamp and for generating a lamp current out...
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WO/2012/003541 |
The Digital Addressable Lighting Interface (DALI) is a lighting control protocol that allows individual control and monitoring of each device in a lighting system (e.g. ballasts, emergency lighting etc), as well as groups of such devices...
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WO/2012/004303 |
The invention relates to a method for defining an operational parameter of an operational device for lighting means. Said method consists of the following steps: the voltage supply of the operational device is preferably switched on/off ...
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WO/2012/004697 |
The invention relates to a lamp driver for operating an HID-lamp, comprising: input terminals for connection to the poles of a low frequency supply voltage, rectifying means coupled to the input terminals for rectifying the low frequency...
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WO/2011/154180 |
The invention specifies a light-emitting diode arrangement, with a piezoelectric transformer (1) which has at least one output-side connection point (11), and with a high-voltage light-emitting diode (2), which comprises a high-voltage l...
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WO/2011/153831 |
A control system for lamp source comprises a lamp (510), a ballast (500) connected with the lamp (510) and a lamp controller (601). The ballast (500) comprises a rectification boost power factor correction (PFC) controller and a buck DC ...
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WO/2011/156083 |
An electronic high intensity discharge (HID) ballast (102) is presented which includes a dual mode buck converter (120) providing a DC output voltage (122) to drive an inverter (140), where the buck converter (120) regulates the DC outpu...
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WO/2011/153020 |
Embodiments of the present invention provide for the rapid reignition of a high intensity discharge lamp. In one embodiment of the invention, an apparatus for a fast reignition of a high intensity discharge lamp is disclosed. The apparat...
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WO/2011/151107 |
The invention relates to a circuit arrangement for operating a discharge lamp (FL). The coils (Wh, Wc) of the lamp are heated using a conductor (TR1). In order to identify the lamp, one coil of the conductor is bridged by a resistor (R5).
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WO/2011/148954 |
Disclosed is an LED illuminating device having an illuminating load using an LED. The LED illuminating device includes a rectangular bridge circuit (40) wherein a first switching transistor (41), a second switching transistor (42), a thi...
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WO/2011/149838 |
A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit m...
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WO/2011/149838 |
A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit m...
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WO/2011/149863 |
A dimmer conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit receives a gate drive signal from a PFC circuit and provides a dimmer reference level signal representative of a dimme...
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WO/2011/147464 |
The invention relates to a method for compensating the burn-back of electrode tips in high-pressure discharge lamps, wherein during a predetermined duration the power supplied to the high-pressure discharge lamp is modulated between a lo...
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