Matches 1 - 34 out of 34


Match Document Document Title
US20050200305 Multi-lamp drive device  
A multi-lamp drive device comprises a transformer, a drive circuit and at least a balanced inductor. The magnetic core of the transformer has a first side column, a second side column and at least...
US20110122165 LAMP DRIVING CIRCUIT HAVING LOW VOLTAGE CONTROL, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY USING THE SAME  
A lamp driving circuit is provided for controlling individual block luminances provided by corresponding locally dimmed blocks of a backlight unit of an LCD system where the backlight unit employs...
US20080122380 Discharge Lamp Lighting Circuit  
A discharge lamp lighting circuit supplies an AC power for lighting a discharge lamp. The discharge lamp lighting circuit includes a power supply portion for supplying the AC power to the...
US20110037406 HIGH PRESSURE DISCHARGE LAMP LIGHTING APPARATUS AND LIGHTING FIXTURE  
The high pressure discharge lamp lighting apparatus (10) includes a power circuit (20, 30, 40, and 50) and a starting circuit (60). The power circuit (20, 30, 40, and 50) includes a pair of output...
US20100321369 BACKLIGHT DEVICE AND DISPLAY EQUIPPED WITH THE DEVICE  
The present invention provides a backlight device that can ensure the margin for design of the placement of a circuit board by simplifying the configuration of a lighting circuit of a lamp and...
US20140001976 COIL COMPONENT AND DISPLAY DEVICE INCLUDING THE SAME  
There is provided a coil component in which a plurality of coils may be easily connected to external connection terminals. The coil component includes: a bobbin including a winding part having a...
US20070210724 Power adapter and DC-DC converter having acoustic transformer  
An integrated power adapter, a portable electronic device with an integrated power adapter, and multichip modules are described.
US20050035727 Discharge lamp illumination circuit  
A discharge lamp illumination circuit 1 has a DC-AC conversion circuit 3 for effecting AC conversion upon receipt of a DC input and detection circuits 12, 13 for detecting a voltage and a current...
US20070035258 Lamp drive circuit  
A lamp drive circuit used for driving a number of lamps is provided. The lamps are used in the backlight module. The backlight module is used for providing a light source during a liquid crystal...
US20050184678 Starting device for a high-pressure discharge lamp, and an illuminating system  
The invention relates to a starting device for a high-pressure discharge lamp having a piezoelectric transformer for generating the starting voltage required for starting the gas discharge in the...
US20090039798 Pulsed igniting device comprising a piezoelectric transformer for a high-pressure discharge lamp  
A device for igniting the gas discharge in a high-pressure discharge lamp (La). The igniting device is embodied as a pulsed igniting device (C, FS, Tr1) while a piezoelectric transformer (PT) is...
US20080203937 Method and a Circuit Arrangement for Operating a High Intensity Discharge Lamp  
A method and a circuit arrangement (1) for operating a high intensity discharge lamp (2), which is supplied by direct current (DC) supply lines (4, 6), comprising a transformer (40), of which a...
US20080169768 Electronic ballast with PCB edge mounted output transformer/inductor  
An output transformer or inductor for electronic ballast which having a number of electronic components including diodes, transistors, resistors, various type of capacitors and different...
US20090051298 Multiple discharge lamp lighting device  
A multiple discharge lamp lighting device in which lamp current of discharge lamps is equalized by using a circuit structure having transformers on both sides of the discharge lamps and in which...
US20110254452 GAS DISCHARGE LAMPS  
An electronic ballast (10), for a gas discharge lamp (18), comprises a constant current source (14) and a switch (16). A transformer (60), for use in an igniter (90) for a gas discharge lamp (18,...
US20110050115 METHOD AND IGNITER FOR IGNITING A GAS DISCHARGE LAMP  
A method of igniting a gas discharge lamp (2) comprises the steps of first applying a plurality of high-voltage ignition pulses with a relatively low amplitude and subsequently applying...
US20090315472 BACKLIGHT MODULE  
A backlight module positioned on a printed circuit board (PCB) includes a power control circuit, a transformer, and a voltage detection component. The power control circuit outputs power signals....
US20090079356 AC/DC LAMP HOLDER  
An AC/CD lamp holder includes a first lamp base having a first end adapted to electrically connect to an AC power source; and an AC/DC transformer having an AC side electrically connected to a...
US20080265794 CURRENT-DRIVEN TOROIDAL-MAGNETIC-CORE-FREE FEEDBACK TYPE BALLAST  
A current driven toroid-free feedback type ballast comprising a filter and rectifier circuit, a switch and resonant circuit and a lamp load including capacitors, wherein the filter and rectifier...
US20160105941 LOAD DRIVING APPARATUS WITH WIDE VOLTAGE INPUT  
A load driving apparatus is provided, which includes: a DC high voltage generation circuit, configured to selectively receive one of first and second AC input voltages different to each other, and...
US20100253227 LIGHT FIXTURE AND DRIVING CIRCUIT THEREOF  
A light fixture includes a CCFL and a driving circuit. The driving circuit includes a first voltage converter and a high-voltage inverter. The first voltage converter provides a DC voltage signal...
US20100207537 COMPLEX FLUORESCENT LAMP  
A complex fluorescent lamp is provided. The complex fluorescent lamp comprises at least one cold cathode fluorescent lamp (CCFL) and an impedance transformer. Each of the CCFL has a first...
US20090251061 Apparatus for Operating at Least One Discharge Lamp  
The invention relates to an apparatus for operating at least one discharge lamp by means of one or more voltage converters, wherein the apparatus comprises a voltage converter which is in the form...
US20120217895 LAMP TUBE DRIVING DEVICE, LAMP TUBE MODULE, AND LAMP TUBE DRIVING SYSTEM  
Disclosed is a lamp-tube driving device including a controller, an oscillating circuit, a converter, and a protective circuit. Connection relations there-between include the oscillating circuit...
US20110031892 LIGHTING DEVICE AND DISPLAY DEVICE  
A lighting device (8), which is provided with a cold cathode fluorescent tube (light source) (9) and a chassis (8a) that houses the cold cathode fluorescent tube (9), includes an inverter circuit...
US20080309250 Radio Station and Method of Operating a Radio Station  
A lamp driver circuit supplies an alternating current having an operating frequency to a lamp, e.g. a fluorescent lamp, for operating the lamp. To switch off the lamp, the frequency of the...
US20060087254 Multi-lamp tube controlling circuit  
A multi-lamp tube controlling circuit includes at least one driving unit and having at least one switch individually, at least one transformer connected to the driving unit and the lamp, a current...
US20100225242 GAS-DISCHARGE LAMP AND METHOD OF MANUFACTURING A GAS-DISCHARGE LAMP  
A gas-discharge lamp (1) with a lamp base (2) and with a lamp envelope (4) is described, which for fastening at the lamp base (2) in a base-sided area is surrounded by an electrically conductive...
US20060175982 Linear reactor ballast for sports lighting fixtures  
A means and method for increasing use of a light from a high intensity lighting fixture to a target area without an increase in energy use. One aspect increases the electrical efficiency of...
US20120104963 LIGHT SOURCE APPARATUS AND LIGHT SOURCE ADJUSTING MODULE  
A light source apparatus and a light source adjusting module are provided. The light source apparatus includes a power supply, a phase modulator, an electrical transformer, a light source...
US20110007099 INVERTER CIRCUIT, BACKLIGHT DEVICE AND DISPLAY DEVICE  
Provided is an inverter circuit capable of suppressing an increase in EMI level. In at least one embodiment, the inverter circuit includes: a drive circuit for outputting a pulse signal; a...
US20080290812 Transformer Driver and Transformer Driving Method  
A transformer driver capable of making a load current constant with a simple configuration is provided. A driver 10 of the present invention applies a drive voltage Vd to the primary side of a...
US20100134036 TRANSFORMER AND BACKLIGHT APPARATUS  
The invention discloses a transformer and a backlight apparatus. The backlight apparatus includes a power module, a lamp and a transformer. The transformer includes a bobbin, a primary winding, a...
US20090315464 TRANSFORMER AND BACKLIGHT APPARATUS  
The invention discloses a transformer for a backlight apparatus including a lamp and a detecting unit. The transformer includes a bobbin, a first winding and a second winding. The bobbin has a...

Matches 1 - 34 out of 34