233281 ⎘
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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps; Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
Control algorithm for an electronic dimming ballast of a UV lamp
#2Starting device for a CDM lamp and starting method for the same
#3Electronic circuit for protecting a load against over-voltage
#4Power circuit for a gas discharge lamp
#5UNIVERSAL BALLAST
#6Fluorescent ballast end of life protection
#7Circuit arrangement and method for operating at least one discharge lamp
#8Detector circuit and method for actuating a fluorescent lamp
#9Circuit Arrangement and Method for Operating a Light Source
#10Ballast with end-of-life protection for one or more lamps
#11Lighting unit and discharge lamp
#12Electronic ballast protection
#13Circuit arrangement, and method for the operation of a fluorescent lamp
#14Discharge lamp lighting device, and illuminating device
#15Ignition for ceramic metal halide high frequency ballasts
#16CFL Auto Shutoff for Improper Use Condition
#17Safety loop for a light fixture
#18Self-ballasted fluorescent lamp and lighting apparatus
#19Lighting unit and discharge lamp
#20DRIVING METHOD AND CONTROL METHOD OF HOT CATHODE FLUORESCENT LAMP, AND ESTIMATION METHOD OF TEMPERATURE OF FILAMENT IN HOT CATHODE FLUORESCENT LAMP
#21Control circuit of a driving circuit for regulating the switching frequency of a discharge lamp
#22Method and apparatus for monitoring the operation of a gas discharge lamp
#23Method For Lamp Life Control of a Gas Discharge Lamp, a Gas Discharge Lamp Driver Circuit, a Gas Discharge Lamp and an Assembly of a Gas Discharge Lamp and a Lamp Driver Circuit
#24Anti-Striation Circuit For A Gas Discharge Lamp Ballast
#25Method and Circuit for Supplying a Hot Cathode Fluorescent Lamp
#26Fluorescent tube electronic rectifier
#27METHOD FOR INCREASING PROFIT IN A BUSINESS TO MAINTAIN LIGHTING OPERATIONS IN AN OFFICE BUILDING OR OTHER PLACE OF BUSINESS
#28Ballast with lampholder arc protection
#29Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
#30Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
#31METHODS AND APPARATUS TO ENHANCE OPERATION OF FLUORESCENT LAMPS
#32Ballast having a dimming device
#33Method of controlling cathode voltage with low lamp's arc current
#34Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
#35Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
#36Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
#37Symmetric cancelling anti-striation circuit
#38Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
#39Ballast for a discharge lamp having a continuous-operation control circuit
#40Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
#41Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps