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WO/2011/074151A1 |
Provided is a high-pressure discharge lamp light-up device, wherein wearing out of a pair of electrodes of the high-pressure discharge lamp can be alleviated, and expansion of the distance between the electrodes can be alleviated, in com...
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WO/2011/073829A1 |
An electronic ballast with power thermal cutback including an electronic ballast operably connected to provide power to a lamp, the electronic ballast having a PFC converter (HO) operable to receive a PFC input voltage (112) and operable...
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WO/2011/075679A1 |
An electrodeless plasma lamp and method of generating light are described. The lamp may comprise a lamp body, a source of radio frequency (RF) power and a bulb. The lamp body may comprise a solid dielectric material and at least one cond...
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WO/2011/072982A1 |
The present invention relates to a start auxiliary device for driving a gas discharge lamp cluster, the gas discharge lamp cluster comprising n gas discharge lamps connected in series, the start auxiliary device comprises: a primary star...
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WO/2011/074309A1 |
Disclosed is an inverter device which is provided with a plurality of transformers and which drives a plurality of discharge tube lamps using the output voltages of the plurality of transformers as applied voltages that are respectively ...
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WO/2011/070842A1 |
Disclosed is an inverter device which is provided with a plurality of transformers and is used for driving a plurality of discharge tube lamps (L1-L6) by using each of the output voltages (VL1-VL6) of the plurality of transformers as vol...
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WO/2011/069779A1 |
The invention relates to a circuit assembly for operating at least one discharge lamp having an input for coupling to a direct current supply voltage (Uzw), a bridge circuit having at least one first (S1) and one second electronic switch...
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WO/2011/071993A2 |
A driver circuit includes a plurality of switches, forming two switching legs, each of at least two switches and connected between two DC voltage buses. The switches are matched to form diagonal pairs. The driver circuit also includes a ...
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WO/2011/070470A1 |
A method is described for driving a fluorescent lamp (L) with variable light output within a dimming range between a low dimming level and a high dimming level. The lamp power and the lamp current are monitored. At high dimming level, th...
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WO/2011/071398A2 |
The invention relates to the method for controlling high intensity discharge lamp comprising supplying a signal of variable frequency and constant filling factor from the switches cascade to the ballast circuit and the lamp, said ballast...
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WO/2011/070843A1 |
Disclosed is an inverter device which is provided with a plurality of transformers and is used for driving a plurality of discharge tube lamps (L1-L6) by using each of the output voltages (VL1-VL6) of the plurality of transformers as vol...
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WO/2011/069813A1 |
The invention relates to a circuit arrangement for operating at least one discharge lamp (La) having an input having a first (E1) and a second input connection (E2) for coupling to a DC supply voltage (UZw); an output having a first (A1)...
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WO/2011/066596A2 |
The invention relates to an operating device for lighting means having an inverter and comprising at least one actively controlled switch (Q30, Q31), which is supplied from a direct voltage and to which a resonant output circuit having a...
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WO/2011/064116A1 |
The invention relates to a circuit assembly for operating a discharge lamp comprising a full bridge assembly which supplies the discharge lamp, wherein the circuit assembly can operate the discharge lamp at a low frequency and a high fre...
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WO/2011/064389A1 |
The invention relates to a method for setting an electronic ballast, wherein the electronic ballast and a compensating unit are synchronized, and wherein the electronic ballast is set by means of the compensating unit. Moreover, a corres...
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WO/2011/066399A1 |
A system for adaptively controlling and adjusting the output and balance of multiple integrated illuminated panels may include a plurality of illumination sources in operative connection with a plurality of integrated illuminated panels,...
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WO/2011/064089A1 |
The invention relates to a method for adjusting a frequency of a bridge circuit of an electronic ballast, wherein an adjustment mode of the electronic ballast is activated; wherein at least one frequency for operation of the bridge circu...
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WO/2011/061180A1 |
A device (10) for starting a high intensity discharge lamp, comprising: a driving device (102), a resonance circuit (104) and a control device (106), wherein the driving device (102) obtains energy from a power source (100), and applies ...
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WO/2011/061053A1 |
The invention relates to an electronic ballast for operating at least one discharge lamp (La) having an input having a first (E1) and second input connection (E2) for coupling to a DC supply voltage (UZw); an output having a first (A1) a...
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WO/2011/057442A1 |
A method and system for controlling active power supplied to a lamp tube in an existing lighting system having an electronic ballast circuit for said lamp tube bydrawingreactive power througha circuit path parallel to said lamp tube. The...
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WO/2011/057343A1 |
The present invention relates to a coupling and various methods of use of the coupling. In one embodiment the invention provides a coupling for use with an appliance operated by a power supply, which coupling allows mounting/dismounting ...
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WO/2011/059304A1 |
A full-wave electronic inverter for supplying one or more low-pressure gas discharge or fluorescent lamps, which inverter is protected by a circuit containing a small tubular-core saturable transformer which has the inductive reactance n...
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WO/2011/056242A1 |
Light Emitting Diodes (LEDs) are increasingly used in illumination applications. To control multiple Light Emitting Diodes (LEDs), or any other controllable light source, this document introduces a single-wire multiple-LED power and cont...
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WO/2011/055158A1 |
The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capaci...
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WO/2011/052019A1 |
A discharge lamp lighting apparatus provided with a control unit which identifies an output voltage, which had been detected by an output voltage detection unit which detects the voltage applied to a discharge lamp, by the polarity of th...
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WO/2011/051846A1 |
An electrodeless discharge, ED, lamp is driven by a driver circuit at a predetermined high frequency, f. The driver circuit comprises DC power input terminals and lamp output terminals to supply power to a coupling coil of the ED lamp. A...
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WO/2011/051859A1 |
A device controls current drawn by a solid state lighting (SSL) fixture, including a power converter and an SSL load. The device includes a rapid start/bleeder circuit having a selectable low impedance path, configured to be temporarily ...
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WO/2011/049689A1 |
Fluorescent lamp ballasts and methods are disclosed in which a resonant impedance of a self- oscillating inverter is modified to control the inverter frequency to selectively preheat lamp cathodes using power from the inverter output dur...
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WO/2011/049613A1 |
An AC-driven LED circuit 10 includes a first basic circuit 12 having a first branch 14 and a second branch 16 which connect at first and second common points 18, 20 wherein the common points 18, 20 provide input and output for an AC driv...
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WO/2011/047818A1 |
The invention relates to a device for controlling a plurality of electrical consumers to which a constant control current is applied at control nodes. According to the invention, a transformer unit to which a regulated and/or constant cu...
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WO/2011/048928A1 |
A high voltage discharge lamp lighting apparatus whereby the switching control from a dim lighting to a nominal lighting can be improved. The high voltage discharge lamp lighting apparatus comprises: a power supplying circuit (10) that s...
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WO/2011/042250A1 |
Figure 1 shows the principle of the method according to the invention, in which light having an emission line at a spectral position and light having an absorption line at the same spectral position (characteristic self-absorption) are l...
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WO/2011/039801A1 |
An ignitor transformer comprises: a primary winding (1) comprising a plurality of conductive wires and discharging electric charges charged within a capacitor (34); and a secondary winding (2) comprising a number of conductive wires less...
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WO/2011/040512A1 |
Disclosed is a protection circuit for a fluorescent lamp drive device, which can light a fluorescent lamp at a high efficiency, while detecting whether there is a disconnection or not. The current loop circuit (26), i.e., a closed loop c...
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WO/2011/038974A1 |
The present invention relates to an electronic ballast for operating at least one discharge lamp (RL), comprising an input having a first (E1) and a second input connection (E2) for coupling to a DC supply voltage (UZw); an output having...
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WO/2011/037774A1 |
A lighting apparatus includes a string of serially-connected light emitting devices and a bypass circuit coupled to first and second nodes of the string and configured to variably conduct a bypass current around at least one of the light...
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WO/2011/032780A1 |
Fluorescent lamps (10, 10'; 10b; 10c) have coils (14a, 14b; 14'a, 14'b) for electrodes, the connectors (16a, 18a; 16b, 18b) of said coils being interconnected via an inductive element (30, 32), the inductivity of which is chosen such tha...
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WO/2011/033412A2 |
An electronic ballast with dimming circuit including an electronic ballast dimming circuit receiving an analog dimming signal, the electronic ballast dimming circuit including an input dimming circuit (210) operable to receive the analog...
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WO/2011/032785A1 |
The present invention relates to a device for reducing electromagnetic interference of a fluorescent illumination device comprising a capacitor element (22a,b,c) adapted for conducting high frequency energy from the device to ground pote...
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WO/2011/030264A1 |
A power driver circuit for an electrodeless discharge lamp comprises a push- pull class E converter comprising power supply terminals for receiving a DC supply voltage, and lamp output terminals for supplying power to an antenna of the l...
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WO/2011/031262A1 |
In one embodiment a power supply is configured to reuse a single power supply controller to regulate two different output voltages to two voltages including two different voltage values.
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WO/2011/028226A2 |
A system and method are provided for mimicking a bioluminescent signal from an animal or an insect, such as a firefly. A first version includes a controller, an electrical energy battery, a solar energy collector and a light emitting dev...
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WO/2011/026926A2 |
The invention relates to a method for the controlled AC operation of a preferably dimmable operating device for lighting devices, such as LEDs, OLEDs or gas discharge lamps. The interval from significant points of the flow of the current...
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WO/2011/022937A1 |
A T-type network drive unit and a control method thereof are provided. The T-type network drive unit comprises an energy conversion inductor, an energy conversion capacitor and a ballast inductor. An equivalent capacitance of the energy ...
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WO/2011/022870A1 |
A ballast control apparatus configured for an inductance ballast of a high intensity gas discharge lamp (HID) and a ballast apparatus including the ballast control apparatus are provided. The ballast control apparatus includes an energy ...
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WO/2011/024230A1 |
An igniter for a mercury-free discharge lamp lighting device is provided with a high-voltage terminal housing portion of a socket section which is formed at one end of a bobbin in order to fit a mercury-free discharge lamp therein, and a...
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WO/2011/021120A2 |
A method for providing universal voltage input to a solid state lighting fixture (140) supplied by an AC line voltage includes converting an analog voltage signal corresponding to the line voltage to digital values indicating a waveform ...
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WO/2011/022517A2 |
An emergency ballast for a fluorescent lamp includes a rechargeable battery. The emergency ballast also includes a circuit for receiving an electrical current and providing a recommended charging voltage to the battery. The electrical cu...
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WO/2011/022516A2 |
A ballast for a lamp has a battery that provides direct current in response to a loss of power. The ballast has a conversion circuit that is configured to receive the direct current from the battery and convert it into alternating curren...
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WO/2011/022685A2 |
A lamp assembly including one or more light emitting diode (LED) arrays and a controller circuit to output a current to the one or more LED arrays. Each LED array includes at least one LED and defines a spatial radiation pattern having a...
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