233275 ⎘
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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps Arrangements for protecting lamps or circuits against abnormal operating conditions
Sub-classes:Input detection and protection circuit
#2Projector and control method for projector
#3Image projection apparatus, control method, and computer-readable storage medium
#4Emergency lighting ballast device with a plurality of ballast outputs for flexible lamp connection configurations
#5Power supply and display device including the same
#6LIGHT SOURCE
#7Surge protection module for luminaires and lighting control devices
#8Aircraft External Illumination Lamp
#9Circuit arrangement and method for the operation of a high-pressure gas discharge lamp
#10Acoustic resonance free driving electronic ballast for high intensity discharge lamp
#11Method For Operation Of A High Pressure Discharge Lamp Operating Device For A High Pressure Discharge Lamp And High Pressure Discharge Lamp With An Operating Device
#12Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device
#13Discharge-lamp ballast in particular for a vehicle headlight
#14High-intensity discharge lamp ballast and method for operating high-intensity discharge lamp
#15Circuit arrangement for driving a high-pressure discharge lamp