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Patent Searching and Data


Matches 701 - 750 out of 42,513

Document Document Title
WO/2010/049286A1
The invention relates to a lighting system comprising at least one lamp and at least one electronic ballast that operates the at least one lamp, wherein at least one communication unit that can be connected to the electronic ballast is d...  
WO/2010/049845A1
The invention describes a method of driving a gas-discharge lamp (1), wherein the lamp (1) is driven at any one time using one of a plurality of operating modules (M1, M2, M3, M4) and wherein a first operating mode (M1) and a second oper...  
WO/2010/045970A1
The invention relates to a circuit arrangement and to a method for making a lamp wattage available for operating at least one gas discharge lamp (5) depending on a dimming signal (DIM) which is input into a wattage factor correction circ...  
WO/2010/045980A1
The invention relates to a method for operating a high pressure discharge lamp, the high pressure discharge lamp being operated by a current inverter with a square wave lamp current which has a positive phase with positive current flow a...  
WO/2010/047447A1
Disclosed is an LED illumination device. The LED illumination device of the present invention can be used through the direct connection to a terminal for a fluorescent light regardless of a known magnetic or electronic illumination syste...  
WO/2010/045062A2
A light source, for a high-speed, continuous transport microfilm imaging system, includes an LED emitter thermally coupled to a heat sink and mounted within a light source housing. A light output opening in the housing, further defined b...  
WO/2010/044968A1
The present application claims a compact low cost topology solution of a ballast for a discharge lamp that can provide both high power factor and low total harmonic distortion with fewer components than prior art. The topology provides t...  
WO/2010/043923A1
An emergency supply circuit for an electronic ballast (10) having a supply input (12) and dimming control input (14), includes an output line (102) to feed the supply input (12) of the electronic ballast (10), a first feed line (104) to ...  
WO/2010/044302A1
A display device illumination device (12) is an illumination device which supplies an illumination light to a display panel and includes: a cold cathode tube (17); an inverter circuit unit (30a) which supplies power to the cold cathode t...  
WO/2010/040634A1
An emergency ballast system is provided. The system includes a ballast unit having a DC/ AC inverter, and further includes a signal preparing unit and an emergency unit. The ballast unit is adapted to power a load connected to the emerge...  
WO/2010/040647A1
The present utility model discloses a self-oscillating half-bridge circuit device including a switch element, a driving element and a blocking capacitor, wherein the switch element includes a first transistor and a second transistor conn...  
WO/2010/038093A2
An electronic circuit and method is provided for decreasing, or at least maintaining within allowable limits, the total harmonic distortion caused by dimming a compact fluorescent lamp using a standard dimmer circuit such as a triac base...  
WO/2010/038093A3
An electronic circuit (30) and method is provided for decreasing, or at least maintaining within allowable limits, the total harmonic distortion caused by dimming a cpmpact fluorescent lamp using a standard dimmer circuit such as a triac...  
WO/2010/038303A1
An information providing system (100) includes: a digital converter (74) which converts predetermined information to be transmitted to a digital signal; a magnetic energy regeneration switch (MERS) (30) connected in series to a DC power ...  
WO/2010/037009A1
A light emitting driver circuit, system, and method are provided. The driver circuit system and method can be implemented in various ways. An embodiment includes a bypass circuit which diverts current from the LEDs whenever a switch coup...  
WO/2010/035368A1
Provided are a high-voltage discharge lamp lighting apparatus capable of preventing a lamp voltage in a high-voltage discharge lamp from excessively decreasing and a high-voltage discharge lamp apparatus using the high-voltage discharge ...  
WO/2010/031535A1
The invention relates to a method for determining the type of a lamp (L) or the topology of a plurality of lamps (L1 to L4) which is/are operated using alternating voltage having variable frequency (f), wherein the power supplied to the ...  
WO/2010/031727A3
The invention relates to a method for controlling an electric gas discharge lamp (71). When switching on the gas discharge lamp (71), initially it is supplied with maximum power. Thereafter, the gas discharge lamp (71) is controlled by m...  
WO/2010/031430A1
The present invention relates to a circuit arrangement for operation of a discharge lamp, comprising: an input having a first input connection (E1) and a second input connection (E2) for connection of a supply voltage; a first electronic...  
WO/2010/031429A3
The invention relates to a circuit and a method for dimming at least one luminous element, comprising at least two circuit inputs and an N-connection, wherein the at least one luminous element can be dimmed due to a circuit combination o...  
WO/2010/031429A9
The invention relates to a circuit and a method for dimming at least one luminous element, comprising at least two circuit inputs and an N-connection, wherein the at least one luminous element can be dimmed due to a circuit combination o...  
WO/2010/029628A1
An illumination system (100) has a presence detection sensor (80) which detects the presence/absence of a human (M) or a vehicle (V), an MERS (30) which is connected with an AC power supply (20) and a street lamp (60), and a control part...  
WO/2010/028679A1
A circuit arrangement is described, particularly for supplying at least one lighting means, comprising at least one interference suppression means disposed in the vicinity of a source of interference. The invention further describes an e...  
WO/2010/027817A2
An apparatus and method provides a driver circuit that provides for power factor correction (PFC) to a load, such as a solid-state lighting (SSL) device, such as, for example, a light emitting diode (LED) or an array or cluster of LEDs. ...  
WO/2010/026494A1
A device includes a flash unit to generate light, and an optical sensor to receive the light from the flash unit, and generate a light intensity signal based on the received light. The device also includes a controller to generate a modi...  
WO/2010/027823A1
A direct lighting system and method is provided that includes a plurality of light-emitting diodes (LEDs) secured within a light fixture. The lighting system further includes a diffusive transmissive element adapted to transmit light fro...  
WO/2010/027493A2
A hybrid light source comprises a discrete-spectrum lamp (for example, a fluorescent lamp) and a continuous-spectrum lamp (for example, a halogen lamp). A control circuit individually controls the amount of power delivered to the discret...  
WO/2010/027389A2
An electronic ballast for driving a gas discharge lamp comprises an inverter circuit that operates in a partially self-oscillating manner. The inverter circuit comprises a push-pull converter having a main transformer having a primary wi...  
WO/2010/027390A3
An electronic ballast for driving a gas discharge lamp comprises a measurement circuit (170) for measuring a lamp current flowing through the lamp and a lamp voltage produced across the lamp. The ballast comprises a first winding (260) m...  
WO/2010/027493A3
A hybrid light source comprises a discrete-spectrum lamp (for example, a fluorescent lamp) and a continuous-spectrum lamp (for example, a halogen lamp). A control circuit individually controls the amount of power delivered to the discret...  
WO/2010/027389A3
An electronic ballast for driving a gas discharge lamp comprises an inverter circuit that operates in a partially self-oscillating manner. The inverter circuit comprises a push-pull converter having a main transformer having a primary wi...  
WO/2010/027392A1
An electronic ballast for driving a gas discharge lamp having first and second electrodes comprises an inverter circuit and a symmetric resonant tank circuit for minimizing the RFI noise produced at the electrodes of the lamp. The invert...  
WO/2010/027390A2
An electronic ballast for driving a gas discharge lamp comprises a measurement circuit (170) for measuring a lamp current flowing through the lamp and a lamp voltage produced across the lamp. The ballast comprises a first winding (260) m...  
WO/2010/023464A1
A system for controlling lamp striking voltage and recovery of energy from resonant lamp strike circuits used for electronic high intensity discharge lamp ballasting and other lamp ballasts is provided.  
WO/2010/023805A1
An F/F (10) that maintains the on or off operation of a switching element (Q1) on the high side of an inverter synchronized with the rise and fall of a main signal is provided with a recovery unit (9) that generates a signal to return to...  
WO/2010/024765A1
The present Invention relates to a method and a flash unit for increasing the stability in an electron flash tube within its dynamic range. The present invention discloses that a flash discharge (F) is preceded by a pre-discharge (G) whi...  
WO/2010/021191A1
An inverter control circuit (25) subjects transistors (Q1), (Q2) of a drive circuit (21) to complementary on/off operation. The inverter control circuit (25) generates a rectangular wave signal S1 of an on/off frequency (a first frequen...  
WO/2010/020937A1
The present invention provides a lighting system 10 for operating a high intensity discharge (HID) lamp 12, comprising: a converter 200 for converting an input voltage to a DC current; a commutator 202 coupled to the converter for conver...  
WO/2010/020946A1
The invention relates to a circuit for operating a high pressure discharge lamp La. The circuit comprises input terminals for connecting to a source of supply voltage; first capacitive means C1 coupled to the input terminals and second c...  
WO/2010/017687A1
An energy saving lamp with the automatic sensing and control function can detect the motion of a body and the illumination of the environment so as to turn on/off the lamp. It is characterized in that the inner side of the lamp head base...  
WO/2010/018048A1
The high-pressure discharge lamp (2) has no electrodes and is excited by means of microwaves. Acoustic resonances control the plasma flow and stabilize it. This stabilization is assisted by a specific shape of the discharge vessel. For t...  
WO/2010/015498A1
The invention relates to a high-voltage pulse generator based on a spiral pulse generator, wherein the spiral pulse generator is designed as an LTCC component and wound of at least two ceramic layers and at least two metal-containing lay...  
WO/2010/013166A1
A gas discharge lamp driver and method including a driver (1) for a gas discharge lamp (2) having driver output terminals (3; 4); a lamp current generating section (10) operable to generate a low frequency voltage from a DC voltage, the ...  
WO/2010/009574A1
A lighting system comprises a plurality of separate lamps (1). Each lamp comprises a plurality of light units (21) arranged in an array. The light beams of substantially each pair of adjacent light units in a lamp overlap each other. Eac...  
WO/2010/007985A1
A lighting device comprises a lighting circuit, a modulated-light signal circuit (RSFF1) and a feed-forward control circuit (FF). The lighting circuit receives, as an input thereof, an output (VDC) obtained by rectifying and smoothing a...  
WO/2010/006913A1
The invention relates to a high pressure discharge lamp (10) in a video projection device (14), that is supplied with current by an electronic ballast unit (12), that can be reactivated as quickly as possible after being switched off, an...  
WO/2010/007557A1
The invention describes a method of driving a gas-discharge lamp (1) enclosing a pair of electrodes (3, 4), wherein, during a normal mode of operation, the lamp (1) is driven according to a stabilisation driving scheme, which stabilisati...  
WO/2010/006640A1
The invention relates to the alternating current operation of a discharge lamp. Using a direct current component that is different from zero of the alternating current, a temperature difference of the electrodes is reduced, particularly ...  
WO/2010/004821A1
The lighting device (12) is equipped with multiple lamps (17) and a capacitor (30) connected in series with each of the aforementioned lamps (17). A first capacitor (C1) and a second capacitor (C2) are incorporated inside the capacitor (...  
WO/2010/003570A1
The invention relates to a method for operating an amalgam lamp, wherein the amalgam lamp has an emitter tube that is filled with inert gas, wherein the amalgam is heated in the emitter tube by means of an external energy source, and the...  

Matches 701 - 750 out of 42,513