233265 ⎘
Circuit arrangements or apparatus for igniting or operating discharge lamps; Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using control circuits for the switching elements
Device and method for determining the current flowing through a gas discharge lamp
#302Fluorescent ballast controller IC
#303Information handling system with dual mode inverter
#304DC-AC converter and controller IC therefor
#305Driver for a gas discharge lamp
#306Circuit for driving cold cathode tubes and external electrode fluorescent lamps
#307Digital power control system
#308Resonant converter with phase controlled switching
#309Method and device for identifying the type of discharge lamp
#310DC/AC converter and its controller IC
#311Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
#312Power supply for an LCD panel
#313Digital ballast
#314Lamp current control circuit
#315Fluorescent lamp driver system
#316Frequency feedforward for constant light output in backlight inverters
#317Liquid crystal display system with lamp feedback
#318Ballast circuit for operating a gas discharge lamp
#319Electronic ballast having timing unit correction
#320Transformer level driving circuit
#321Lossless circuit for sampling of lamp voltage
#322Electronic ballast with lossless snubber capacitor circuit
#323Electronic ballast with open circuit voltage control and cable compensation
#324Method of controlling an operation of a switch power converter
#325Sample and hold system for controlling a plurality of pulse-width-modulated switching power converters
#326Current-mode direct-drive inverter
#327Inverter with two switching stages for driving lamp
#328Lamp current control using profile synthesizer
#329Method and apparatus to drive LED arrays using time sharing technique
#330Full digital dimming ballast for a fluorescent lamp
#331Single-stage backlight inverter and method for driving the same
#332Selectable continuous and burst mode backlight voltage inverter
#333System and method for powering cold cathode fluorescent lighting
#334Ceramic transformer level driving circuit
#335Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship
#336Dc-ac converter parallel operation system and controller ic therefor
#337Operating circuit and operating method for a gas discharge lamp
#338DC/AC converter and its controller IC
#339Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship
#340Controlled resonant half-bridge inverter for power supplies and electronic ballasts
#341Split phase inverters for CCFL backlight system
#342Dc/ac conversion device and ac power supply method
#343High-efficiency adaptive DC/AC converter
#344Inverter circuit for lighting discharge lamps with reduced power consumption
#345Switching power converter method
#346Dc/ac converter and controller IC
#347Ballast control IC with minimal internal and external components
#348Surge protection system and method for an LED driver
#349Driver circuit for improving LED flickers
#350Method to control striations in a lamp powered by an electronic ballast