| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/27/1997 | DE19530746A1 Schaltungsanordnung zum Betrieb einer Hochdruck-Gasentladungslampe mit Wechselstrom Circuit arrangement for operating a high-pressure gas discharge lamp with AC |
| 02/26/1997 | EP0759686A2 Process and circuit for operating a lamp |
| 02/26/1997 | EP0759685A2 Instant lighting type fluorescent lamp lighting circuit |
| 02/26/1997 | EP0759684A1 Starting device for a high pressure discharge lamp |
| 02/26/1997 | EP0759265A1 Switching device |
| 02/26/1997 | EP0759264A1 Lighting system for controlling the colour temperature of artificial light under the influence of the daylight level |
| 02/26/1997 | EP0729694A4 High efficiency uv backlighting system for rear illumination of electronic display devices |
| 02/26/1997 | EP0654156A4 Toggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lamps. |
| 02/26/1997 | EP0541769B1 Circuit for driving a gas discharge lamp load |
| 02/26/1997 | CN2248438Y Voltage-doubler rectifying ballast for fluorescent lamp |
| 02/26/1997 | CN1143727A Timing self-checking type ac-dc auto-converting fluorescent lamp |
| 02/25/1997 | US5606227 Surge generator having a low voltage transformer winding connected to a high voltage winding |
| 02/25/1997 | US5606224 Protection circuit for fluorescent lamps operating at failure mode |
| 02/25/1997 | US5606223 Luminaire of reduced noise with magnetic field cancelled |
| 02/25/1997 | US5606222 Lighting system with a device for reducing system wattage |
| 02/25/1997 | US5606220 Visible lamp including selenium or sulfur |
| 02/20/1997 | WO1997006655A1 Ballast circuit |
| 02/20/1997 | WO1997006654A1 System for operating a lamp |
| 02/20/1997 | CA2202070A1 System for operating a lamp |
| 02/20/1997 | CA2202067A1 Ballast circuit |
| 02/19/1997 | EP0758839A2 Cold cathode fluorescent lamp driving apparatus using a piezoelectric transformer |
| 02/19/1997 | EP0758838A2 Emergency lamp with conventional ballast |
| 02/19/1997 | EP0758520A1 Circuit arrangement |
| 02/19/1997 | CN2247921Y High-efficiency energy-saving electronic ballast |
| 02/19/1997 | CN2247920Y Electronic starter for fluorescent lamp |
| 02/18/1997 | US5604422 Transient voltage protection circuit for a DC voltage supply |
| 02/18/1997 | US5604411 Electronic ballast having a triac dimming filter with preconditioner offset control |
| 02/18/1997 | US5604410 Method to operate an incoherently emitting radiation source having at least one dielectrically impeded electrode |
| 02/18/1997 | US5604409 Electronic lighting controller |
| 02/18/1997 | US5604408 Control device for a fluorescent tube, having synchronized blocking of auxiliary and primary transistors |
| 02/18/1997 | US5604406 Portable lamp for use with rapid start metal halide bulbs |
| 02/12/1997 | EP0758159A2 Converter wherein a piezoelectric transformer input signal is frequency modulated by a pulse width modulated signal |
| 02/12/1997 | CN1142705A Power supply apparatus |
| 02/06/1997 | WO1997004625A1 Method for operating a lighting system and suitable lighting system therefor |
| 02/06/1997 | WO1997004624A1 Circuit arrangement |
| 02/05/1997 | EP0757513A2 UV water treatment system |
| 02/05/1997 | EP0757512A1 Driving circuit, MOS transistor using the same and corresponding applications |
| 02/05/1997 | EP0757511A1 Starting circuit, MOS transistor using the same and corresponding applications |
| 02/05/1997 | EP0757420A1 Electric ballast with inrush current limitation and overvoltage protection |
| 02/05/1997 | CN2246883Y Light controller of xenon major signal lamp |
| 02/05/1997 | CN1142310A Circuit arrangement for alternatingly establishing and extinguishing a discharge in each of plurality of discharge paths |
| 02/05/1997 | CN1142168A Method for starting ballasting of fluorescent lamp |
| 02/04/1997 | US5600211 Electronic ballast for gas discharge lamps |
| 02/04/1997 | US5600208 Discharge lamp unit having separable high-voltage transformer safeguard |
| 02/04/1997 | US5600187 Electronically controllable capacitors using power MOSFET's |
| 01/30/1997 | WO1997003541A1 Circuit arrangement |
| 01/29/1997 | EP0756441A1 Ballast with detachable lamp socket |
| 01/29/1997 | CN2246362Y Directly-lighting fluorescent lamp electronic ballast |
| 01/29/1997 | CN2246353Y Harmonic suppressor of electronic ballast |
| 01/29/1997 | CN1141694A Circuit arrangement |
| 01/29/1997 | CN1141569A Feedback control system of ballast |
| 01/29/1997 | CN1141499A Electrodeless high intensity discharge lamp having field symmetrizing aid |
| 01/28/1997 | US5598326 High frequency AC/AC converter with PF correction |
| 01/28/1997 | US5598079 A.C. induction devices having tuned compound windings |
| 01/28/1997 | US5598069 Amalgam system for electrodeless discharge lamp |
| 01/28/1997 | US5598066 Two-level security lighting system |
| 01/28/1997 | US5598042 Moveable desktop load controller |
| 01/28/1997 | CA2110127C Color mixing method for variable color lighting and variable color luminaire for use with the method |
| 01/28/1997 | CA2104737C Inverter device |
| 01/23/1997 | WO1997002722A1 Circuit arrangement |
| 01/23/1997 | DE19627989A1 Multiplying circuit for variable resistive load power measurement e.g. of plasma arc |
| 01/23/1997 | DE19526341A1 Control and protection circuit for electronic ballast for discharge lamp |
| 01/23/1997 | DE19526211A1 Verfahren zum Betreiben von Entladungslampen bzw. -strahler Method for operating discharge lamps or radiant heaters |
| 01/22/1997 | EP0755174A2 Static immunity for single touch flash charger control |
| 01/22/1997 | EP0754400A1 Rf driven sulfur lamp |
| 01/22/1997 | EP0754399A1 Circuit arrangement for ignition of a high intensity discharge lamp |
| 01/22/1997 | EP0676121B1 Ballast for at least one pair of gas discharge lamps in parallel |
| 01/22/1997 | CN2245842Y Variable impedance ballast |
| 01/21/1997 | US5596247 Compact dimmable fluorescent lamps with central dimming ring |
| 01/21/1997 | CA2155293C Sleeve retention for flexible core of a flashlight |
| 01/21/1997 | CA2104738C Variable color luminaire |
| 01/16/1997 | WO1997001945A1 Circuit arrangement |
| 01/15/1997 | EP0753987A1 Circuit and method of operation for electric lamps |
| 01/15/1997 | EP0753986A2 Device for optimized management of fluorescent lamps |
| 01/15/1997 | CN2245320Y Silicon control inductive ballast |
| 01/15/1997 | CN1140328A Compact fluorescent lamp having helical lamp envelope |
| 01/15/1997 | CN1140325A Reduced length compact fluorescent lamp and method of forming the same |
| 01/14/1997 | US5594308 High intensity discharge lamp starting circuit with automatic disablement of starting pulses |
| 01/14/1997 | US5594304 For use in special applications such as hazardous/wet environments |
| 01/14/1997 | US5594303 Apparatus for exciting an electrodeless lamp with an increasing electric field intensity |
| 01/09/1997 | DE19624724A1 EMC filter unit e.g. for motor vehicle discharge-type headlamp connector |
| 01/08/1997 | EP0752806A1 A control device for a gas-discharge lamp |
| 01/08/1997 | EP0752805A1 Electronic converter with thermal protection circuit |
| 01/08/1997 | EP0752804A1 Supply circuit for discharge lamps with means for preheating the electrodes |
| 01/08/1997 | EP0752197A1 Method for igniting and operating a high-pressure discharge lamp and a circuit for performing the method |
| 01/08/1997 | EP0752196A1 Ultra violet lamps |
| 01/08/1997 | EP0589962B1 Circuit for operating a discharge lamp |
| 01/08/1997 | CN2244801Y Ballast for durable energy-saving fluorescent lamp |
| 01/08/1997 | CN2244800Y Starter for energy-saving fluorescent lamp |
| 01/08/1997 | CN2244799Y Electronic fast glow starter |
| 01/08/1997 | CN1140007A Ballast |
| 01/08/1997 | CN1140006A Circuit arrangement for a lamp comprising a first and second circuit branch connected to the lamp |
| 01/08/1997 | CN1139746A Stroboscopic tube unit |
| 01/07/1997 | US5592054 Fluorescent lamp ballast with selectable power levels |
| 01/07/1997 | US5592052 Variable color temperature fluorescent lamp |
| 01/03/1997 | WO1997000597A1 Single transistor ballast with filament preheating |
| 01/02/1997 | DE19626101A1 Gas discharge lamp starting device |
| 01/02/1997 | DE19523750A1 LF AC voltage source e.g. for 50 to 200 Hz |
| 01/01/1997 | CN2244280Y Magnetic conductor day light lamp controller |
| 01/01/1997 | CN2244279Y Electronic starter of day-light lamp |