| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 04/14/2005 | US20050078080 Method and apparatus for controlling operation of lamps |
| 04/14/2005 | US20050077842 Circuit arrangement for operation of one or more lamps |
| 04/14/2005 | US20050077841 Image projector and method of operating same |
| 04/14/2005 | US20050077840 Linear control device for controlling a resistive and/or an inductive and/or a capacitive load |
| 04/14/2005 | US20050077839 Light emitting diode module |
| 04/14/2005 | DE202005000542U1 Circuit arrangement for discharge lamp ignition/starting device, has cylindrical electrodes in sparking path with axes of cylinders adjacent and parallel to one another |
| 04/14/2005 | DE102004041925A1 Vorschaltgerät für eine Hochdruckentladungslampe Ballast for a high pressure discharge lamp |
| 04/14/2005 | CA2484471A1 Operating circuit for a lamp with a heat sink |
| 04/13/2005 | EP1522986A2 Plasma display panel driver with power recovery circuit, driving method thereof, and plasma display device |
| 04/13/2005 | EP1522188A1 Lighting system provided with a sequential colour filtering and a high-pressure discharge lamp |
| 04/13/2005 | EP1407639A4 Remote control of electronic light ballast and other devices field of the invention |
| 04/13/2005 | EP0886882B2 Gas discharge lamp, in particular for a motor-vehicle headlight |
| 04/13/2005 | CN2692963Y Power auto-lowering electronic ballast special for roadlamp |
| 04/13/2005 | CN2692962Y Intelligent self-restoring fluorescent lamp electronic ballast |
| 04/13/2005 | CN2692961Y Ultra-high power combined fluorescent lamp electronic ballast |
| 04/13/2005 | CN2692960Y Self-follow current deep-protection fluorescent lamp electronic ballast |
| 04/13/2005 | CN2692959Y High-strength gas discharge lamp electronic controller |
| 04/13/2005 | CN2692958Y Electronic ballast |
| 04/13/2005 | CN2692957Y Connection-free plug-type non-interferent fluorescent lamp electronic ballast glow starter |
| 04/13/2005 | CN2692956Y Electronic ballast lamp filament heating circuit for fuorescent lamp |
| 04/13/2005 | CN1606900A Electronic ballast with an overvoltage monitoring device |
| 04/13/2005 | CN1606899A Electronic ballast with rail voltage switching |
| 04/13/2005 | CN1606898A Reducing vertical segregation in a hid lamp operated at vhf frequencies |
| 04/13/2005 | CN1606767A Electronic ballast with low voltage output |
| 04/13/2005 | CN1606398A Automatic regulating flash light circuit |
| 04/13/2005 | CN1606397A Discharge lamp light device |
| 04/13/2005 | CN1606396A Device for turning on light and illumination apparatus |
| 04/13/2005 | CN1606395A Drive system and AC conversion apparatus |
| 04/13/2005 | CN1606052A Plasma display panel driver, driving method thereof, and plasma display device |
| 04/13/2005 | CN1197438C Igniting apparatus for discharge lamp |
| 04/13/2005 | CN1197437C Method for producing series of impulse voltages to operate discharge lamps and circuit device thereof |
| 04/12/2005 | US6879117 Electronic ballast for fluorescent lamp |
| 04/12/2005 | US6879115 Adaptive ballast control IC |
| 04/12/2005 | US6879114 Fluorescent lamp driver circuit |
| 04/12/2005 | US6879113 Low frequency output electronic ballast |
| 04/12/2005 | US6879111 DC/AC and DC/DC power supply for LCD displays |
| 04/12/2005 | US6879101 Metal halide lamp with electrodes having a curved surface part and automotive headlamp apparatus |
| 04/12/2005 | US6879024 Strobe light control circuit and IGBT device |
| 04/12/2005 | CA2208857C Method of hot restarting a high intensity discharge lamp |
| 04/07/2005 | WO2005032219A1 Arc lamp improvements |
| 04/07/2005 | WO2004107771A3 Methods and apparatuses for mounting a wireless network component to a fluorescent light |
| 04/07/2005 | US20050073859 Dc/ac converter and its controller ic |
| 04/07/2005 | US20050073483 Plasma display panel driver, driving method thereof, and plasma display device |
| 04/07/2005 | US20050073267 Lamp operating circuit for a gas discharge lamp |
| 04/07/2005 | US20050073266 Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
| 04/06/2005 | EP1521508A1 Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast |
| 04/06/2005 | EP1521507A1 Method and apparatus for driving a discharge lamp |
| 04/06/2005 | EP1521506A2 Discharge lamp lighting apparatus |
| 04/06/2005 | EP1520453A1 Operation of a discharge lamp |
| 04/06/2005 | CN2691025Y Magnetic ballasts |
| 04/06/2005 | CN1605228A Electronic ballast and operating method for a gas discharge lamp |
| 04/06/2005 | CN1605051A Electronic ballast with ignition and operation control |
| 04/06/2005 | CN1604716A Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast |
| 04/06/2005 | CN1604715A Method and apparatus for driving a discharge lamp by using dc/ac converter |
| 04/06/2005 | CN1604714A Ballast with load-adaptable fault detection circuit |
| 04/06/2005 | CN1604713A Fast warming lighting device |
| 04/06/2005 | CN1604632A Projector and drive control of light source lamp for projector |
| 04/06/2005 | CN1604472A Ramp voltage generating apparatus and active matrix drive-type display apparatus |
| 04/06/2005 | CN1196382C Ballast IC with shut-down function |
| 04/06/2005 | CN1196381C Circuit arrangement |
| 04/06/2005 | CN1196380C Free oscillator circuit with simple starting circuit |
| 04/06/2005 | CN1196379C Universal high intensity discharge (HID) electronic starter |
| 04/06/2005 | CN1196170C Fluorescent lamp |
| 04/05/2005 | US6876161 Transformer for cathode tube inverter |
| 04/05/2005 | US6876160 Fluorescent ballast with fiber optic and IR control |
| 04/05/2005 | US6876159 Electronic ballast system for emergency lighting applications |
| 04/05/2005 | US6876158 Electronic ballast with full bridge circuit |
| 04/05/2005 | US6876157 Lamp inverter with pre-regulator |
| 04/05/2005 | CA2227954C A power supply for discharge lamps with balanced resonant circuit |
| 04/05/2005 | CA2223085C Operating circuit for an electrodeless low-pressure discharge lamp |
| 04/05/2005 | CA2178443C Circuit arrangement for coil pre-heating of fluorescent lamps |
| 04/01/2005 | CA2457292A1 Method and apparatus for lamp heat control |
| 03/31/2005 | WO2005029925A1 Power converter with digital signal processor |
| 03/31/2005 | WO2005029924A1 Lamp apparatus having function of air purification |
| 03/31/2005 | WO2005029919A2 Dimming control techniques using self-excited gate circuits |
| 03/31/2005 | US20050068795 Controlled resonant half-bridge inverter for power supplies and electronic ballasts |
| 03/31/2005 | US20050068143 Transformer, lamp base having a transformer and high-pressure discharge lamp |
| 03/31/2005 | US20050068142 Method of manufacturing a long rod shaped ignition transformer integrated in an igniter unit |
| 03/31/2005 | US20050067983 PWM controller with automatic low battery power reduction circuit and lighting device incorporating the controller |
| 03/31/2005 | US20050067981 Simplified topology for HID lamps |
| 03/31/2005 | US20050067980 Method for operating at least one low-pressure discharge lamp |
| 03/31/2005 | US20050067979 Discharge lamp lighting apparatus |
| 03/31/2005 | US20050067978 Frequency synchronization device for LCD lamps |
| 03/31/2005 | US20050067977 Fluorescent lamp |
| 03/31/2005 | US20050067976 Method for the production of a visible, uv or ir radiation with a lamp without electrodes, and lamp that carries out this method |
| 03/31/2005 | US20050067975 Method of operating a discharge lamp system and a discharge lamp system using a combination radial and longitudinal acoustic mode to reduce vertical segregation |
| 03/31/2005 | US20050067974 Three-phase electronic ballast |
| 03/31/2005 | US20050067973 Device for heating electrodes of a discharge lamp |
| 03/31/2005 | US20050067972 Low-output microwave, lighting system and flicker removing method using the same |
| 03/31/2005 | US20050067968 Ramp voltage generating apparatus and active matrix drive-type display apparatus |
| 03/31/2005 | US20050067967 Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast |
| 03/31/2005 | DE10340198A1 Dimmer function for a fluorescent lamp is provided by a regulator circuit controlling the timer oscillator circuit |
| 03/31/2005 | DE10053196B4 Arbeitsleuchte Work Light |
| 03/30/2005 | EP1519638A1 Method for operating a low pressure discharge lamp |
| 03/30/2005 | EP1519637A2 Method of operating a discharge lamp system and a discharge lamp system using a combination radial and longitudinal acoustic mode to reduce vertical segregation |
| 03/30/2005 | EP1519636A2 A method of operating a discharge lamp |
| 03/30/2005 | EP1519635A1 Low-output microwave lighting system and flicker removing method using the same |
| 03/30/2005 | EP1519405A2 Electrodeless lighting system |
| 03/30/2005 | EP1518446A2 Ballast circuit arrangement |
| 03/30/2005 | EP1064828B1 Electronic ballast with a piezoelectric cooling fan |