| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 05/19/2005 | US20050106914 High frequency electronic ballast lamp interconnects |
| 05/19/2005 | US20050105305 Drive system and AC conversion device |
| 05/19/2005 | US20050104698 Electromagnetic device, high-voltage generating device, and method for making the electromagnetic device |
| 05/19/2005 | US20050104563 Circuit arrangement for power factor correction |
| 05/19/2005 | US20050104560 Voltage sense apparatus and method for a capacitor charger |
| 05/19/2005 | US20050104543 Energy savings device and method for a resistive and/or an inductive load and/or a capacitive load |
| 05/19/2005 | US20050104540 Multiplexed high voltage dc-ac driver |
| 05/19/2005 | US20050104539 High frequency electronic ballast with sine wave oscillator |
| 05/19/2005 | US20050104538 Electric circuit for igniting a discharge lamp, and electric component module and discharge lamp incorporating such an electric circuit |
| 05/19/2005 | US20050104537 High frequency electronic ballast with sine wave oscillator |
| 05/19/2005 | US20050104536 Device and method for operating a discharge lamp |
| 05/19/2005 | US20050104535 Driver circuit for an electroluminescent lamp |
| 05/19/2005 | US20050104534 Operating circuit and operating method for a gas discharge lamp |
| 05/19/2005 | US20050104524 Universal lamp illumination system |
| 05/19/2005 | DE19625077B4 Leuchtstofflampen-Vorschaltgerät Fluorescent lamp ballast |
| 05/19/2005 | CA2542822A1 Lighting fixture and method for operating same |
| 05/18/2005 | CN2701218Y An electronic ballast |
| 05/18/2005 | CN2701217Y Electronic blast |
| 05/18/2005 | CN2701216Y High-efficiency and electricity-saving outdoor advertisement lighting device |
| 05/18/2005 | CN1618256A Basic halogen convertor ic |
| 05/18/2005 | CN1618162A Circuit arrangement for power factor correction |
| 05/18/2005 | CN1618048A Power redgulator employing sinusoidal refferene |
| 05/18/2005 | CN1617649A No stroboflash fluorescent lamp |
| 05/18/2005 | CN1617648A Circuit for starting lamp |
| 05/18/2005 | CN1617647A Protective circuit when lamp tube air leaking in electronic ballast |
| 05/18/2005 | CN1617646A Protective circuit while no lamp tube cut-in in electronic ballast |
| 05/18/2005 | CN1617645A Protective circuit when lamp tube life end in electronic ballast |
| 05/18/2005 | CN1617438A Multiplexed high voltage DC-AC driver |
| 05/18/2005 | CN1617015A Apparatus of driving lamp and liquid crystal display device using the same |
| 05/17/2005 | US6894675 Seamless highlighting in LCD monitors and LCD-TV |
| 05/17/2005 | US6894438 Lighting system and method incorporating pulsed mode drive for enhanced afterglow |
| 05/17/2005 | US6894437 Light source device |
| 05/17/2005 | CA2231253C Switching control of an operating circuit |
| 05/17/2005 | CA2214660C Starting flag structure for tubular low pressure discharge lamps |
| 05/12/2005 | WO2005043955A2 Electronic lighting ballast |
| 05/12/2005 | WO2005043592A2 Balancing transformers for lamps driven in parallel |
| 05/12/2005 | WO2005022952A3 Apparatus and method for providing dimming control of lamps and electrical lighting systems |
| 05/12/2005 | US20050099144 Method and apparatus for controlling visual enhancement of luminent devices |
| 05/12/2005 | US20050099143 Drive circuit for illumination unit |
| 05/12/2005 | US20050099142 Thermal protection for lamp ballasts |
| 05/12/2005 | US20050099139 Apparatus of driving lamp and liquid crystal display device using the same |
| 05/12/2005 | US20050099132 Apparatus for driving a light tube and method therefor |
| 05/12/2005 | US20050099130 Microwave energized plasma lamp with dielectric waveguide |
| 05/12/2005 | DE202005002012U1 Digitally controlled energy saving light bulb has a built in control circuit that responds to remote control signals |
| 05/12/2005 | CA2556100A1 Electronic lighting ballast |
| 05/11/2005 | EP1530407A2 Electronic ballast wherein the converter remains active in the event of a lamp failure |
| 05/11/2005 | CN2699624Y A high tubing pressure luminous tube ballasting device |
| 05/11/2005 | CN2699623Y DC high-power energy-saving lamp controller |
| 05/11/2005 | CN2699622Y Averaging power supply circuit for multiple cold-cathode fluorescent lamp |
| 05/11/2005 | CN2699621Y An electronic ballast with life limit protection |
| 05/11/2005 | CN2699620Y Novel cold-cathode type fluorescence lamp |
| 05/11/2005 | CN2699619Y DC fluorescent lamp with improved filament preheat circuit |
| 05/11/2005 | CN2699618Y An environment protective road lamp |
| 05/11/2005 | CN1615675A Ballast for discharge lamp |
| 05/11/2005 | CN1615674A Device and method for operating a discharge lamp |
| 05/11/2005 | CN1615066A Electronic ballast having a converter which can continue to operate in the event of lamp failure |
| 05/11/2005 | CN1615065A Lighting device for discharge lamp |
| 05/11/2005 | CN1615064A Non-radiation electronic ballast with low harmonic wave |
| 05/11/2005 | CN1615063A Circuit of light-adjustable ballast with fluorescent tube resistance feedback network |
| 05/11/2005 | CN1614852A Charging circuit, urgent lighting device and luminous device |
| 05/11/2005 | CN1614737A Apparatus and method for intercepting leakage of microwave |
| 05/11/2005 | CN1201640C Discharge lamp lighting device |
| 05/11/2005 | CN1201639C Fully intergrated ballast IC |
| 05/11/2005 | CN1201184C Liquid crystal displaying device with improved illumination |
| 05/10/2005 | US6892029 Strobe light emitting apparatus and camera |
| 05/10/2005 | US6891339 Adaptive CFL control circuit |
| 05/10/2005 | US6891338 Projector, lamp lighting circuit and lamp lighting control method |
| 05/10/2005 | US6891337 Lighting system |
| 05/10/2005 | US6891336 High pressure discharge lamp lighting apparatus and luminaire using thereof |
| 05/10/2005 | CA2193288C Circuit arrangement for operating a lamp |
| 05/10/2005 | CA2170827C Method and circuit for operation of a high-pressure discharge lamp |
| 05/06/2005 | WO2005041622A1 Ballast |
| 05/06/2005 | WO2005041621A1 Electric-discharge lamp lighting apparatus |
| 05/06/2005 | WO2005002290A8 Control method and apparatus for improving the efficacy of fluorescent lamps |
| 05/06/2005 | WO2004107636A3 Deriving power for a wireless network component from the power source of a fluorescent light |
| 05/05/2005 | US20050094110 Projector and drive control of light source lamp for projector |
| 05/05/2005 | US20050093529 Power-up signal generating apparatus |
| 05/05/2005 | US20050093486 Electronic ballast having a converter which can continue to operate in the event of lamp failure |
| 05/05/2005 | US20050093484 Systems and methods for fault protection in a balancing transformer |
| 05/05/2005 | US20050093483 Systems and methods for a transformer configuration for driving multiple gas discharge tubes in parallel |
| 05/05/2005 | US20050093482 Systems and methods for a transformer configuration with a tree topology for current balancing in gas discharge lamps |
| 05/05/2005 | US20050093481 System and method for generating a discharge in high pressure gases |
| 05/05/2005 | US20050093479 Electronic ballast with rail voltage switching |
| 05/05/2005 | US20050093478 Lighting device for a dielectric barrier discharge lamp |
| 05/05/2005 | US20050093477 Electronic ballast having end of lamp life, overheating, and shut down protections, and reignition and multiple striking capabilities |
| 05/05/2005 | US20050093476 Direct drive CCFL circuit with controlled start-up mode |
| 05/05/2005 | US20050093475 Inductively coupled ballast circuit |
| 05/05/2005 | US20050093474 Lighting method of ultra-high pressure mercury lamp |
| 05/05/2005 | US20050093472 Balancing transformers for ring balancer |
| 05/05/2005 | US20050093471 Current sharing scheme for multiple CCF lamp operation |
| 05/05/2005 | US20050093463 Power supply system and liquid crystal display device having the same |
| 05/05/2005 | US20050093462 Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps |
| 05/05/2005 | US20050093461 Lamp driver system with improved redundancy |
| 05/05/2005 | US20050093456 Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps |
| 05/05/2005 | CA2486782A1 Electronic ballast having a converter which can continue to operate in the event of lamp failure |
| 05/04/2005 | EP1078554A4 Electronic ballast with filament cut-out |
| 05/04/2005 | DE19944575B4 Beleuchtungsvorrichtung mit mindestens einer elektrodenlosen Entladungslampe A lighting device with at least one electrodeless discharge lamp |
| 05/04/2005 | CN2698016Y Driving circuit for electronic ballast of high-strength gas discharge lamp |
| 05/04/2005 | CN2698015Y Self-recovery protector for electronic ballast of high-strength gas discharge lamp |
| 05/04/2005 | CN2698014Y Control power source circuit especially for electronic ballast of high-strength gas discharge lamp |