| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/20/2002 | CN2478308Y Fluorescent lamp able to purifying air |
| 02/20/2002 | CN2478307Y Electronic starting ballast of fluorescent lamp |
| 02/20/2002 | CN1337143A 镇流电路 Ballast circuit |
| 02/20/2002 | CN1337142A Circuit device for operating a discharge lamp by means of a high-frequency current |
| 02/20/2002 | CN1336784A Method for lowering end voltage of working arrangement of gas discharging lamp |
| 02/20/2002 | CN1336783A Method and arrangement for operating gas discharge lamp |
| 02/19/2002 | US6349048 Voltage converter circuit having a self-oscillating half-bridge structure |
| 02/19/2002 | US6348769 Electronic ballast |
| 02/19/2002 | US6348767 Electronic ballast with continued conduction of line current |
| 02/19/2002 | US6348765 Sychronous switching device for fluorescent lamp |
| 02/19/2002 | US6348755 Method and apparatus for driving piezoelectric transformer |
| 02/14/2002 | WO2002013581A2 Multiple lamp lcd backlight driver with coupled magnetic components |
| 02/14/2002 | WO2002013230A1 High-pressure discharge lamp |
| 02/14/2002 | WO2001074573A3 Ballast system for a fluorescent lamp |
| 02/14/2002 | US20020018652 Flash unit |
| 02/14/2002 | US20020018193 Exposure apparatus and device producing method using the same |
| 02/14/2002 | US20020017881 Apparatus for dimming a fluorescent lamp with a magnetic ballast |
| 02/14/2002 | US20020017880 Safety shield assembly for electrical apparatus |
| 02/14/2002 | US20020017878 Power supply apparatus, an electronic ballast using the power supply, and a self-ballasted fluorescent lamp |
| 02/14/2002 | US20020017877 Ballast circuit |
| 02/14/2002 | US20020017874 Modular electronic supply device for discharge lamp |
| 02/14/2002 | US20020017845 Aperture lamp |
| 02/14/2002 | DE10037563A1 Electronic ballast circuit for fluorescent tube operation, includes choke, additional condensers and diodes in mains power supply circuitry |
| 02/13/2002 | EP0852106B1 A method and an arrangement for controlling gas discharge lamps |
| 02/13/2002 | CN1336093A 电路装置 Circuit device |
| 02/13/2002 | CN1335738A Discharge tube lighting apparatus |
| 02/12/2002 | US6346782 Multiple lamp ballast system |
| 02/12/2002 | US6346780 Low-voltage, high-efficiency fluorescent lighting for canes and umbrellas |
| 02/12/2002 | US6346779 Variable frequency self-oscillating half-bridge drive architecture particularly for electric loads |
| 02/12/2002 | US6346778 AC power converter |
| 02/12/2002 | CA2036817C Method of making an excitation coil for an electrodeless high intensity discharge lamp |
| 02/07/2002 | WO2002011498A1 Interface circuit and method for dimming a fluorescent lamp |
| 02/07/2002 | WO2002011181A1 Plasma lamp with dielectric waveguide |
| 02/07/2002 | WO2002010867A2 Circuit arrangement |
| 02/07/2002 | WO2002003535A8 Frequency controlled half-bridge inverter for variable loads |
| 02/07/2002 | WO2001074572A3 Apparatus and method for heating a polymerizable composition |
| 02/07/2002 | WO2001074135A3 Gasket and mold assembly for producing plastic lenses |
| 02/07/2002 | US20020015591 Circuit for a photographic flash |
| 02/07/2002 | US20020015321 Circuit device |
| 02/07/2002 | US20020014865 Discharge-lamp drive apparatus |
| 02/07/2002 | US20020014863 Switching device |
| 02/07/2002 | US20020014861 Dimming control of electronic ballasts |
| 02/07/2002 | US20020014858 Switching device |
| 02/07/2002 | US20020014856 Circuit device |
| 02/07/2002 | US20020014461 Used to filter and treat contaminants in water |
| 02/07/2002 | DE10036952A1 Reduzierung der Klemmenspannung von Betriebsgeräten für Gasentladungslampen Reducing the terminal voltage of operating devices for gas discharge lamps |
| 02/07/2002 | DE10036950A1 Betriebsgerät für Entladungslampen mit Schalterentlastung beim Vorheizen der Elektrodenwendeln Control unit for discharge lamps with switch relief during preheating of the electrode filaments |
| 02/07/2002 | DE10035558A1 Changing AC mains voltage across incandescent, fluorescent or gas discharge lamps, involves open-circuiting low resistance bypass in parallel with choke |
| 02/06/2002 | EP1178711A1 Xenon flash lamp, and socket and rectifier for xenon flash lamp |
| 02/06/2002 | EP1178710A1 Electric discharge lamp starter and lighting system |
| 02/06/2002 | EP1177712A1 Frequency controlled ballast with loosely coupled transformer with gap shunt and method therefor |
| 02/06/2002 | EP1177711A1 Improved pulsed operation method for a silent discharge lamp |
| 02/06/2002 | EP1177710A1 Electronic ballast |
| 02/05/2002 | US6345156 Flash unit |
| 02/05/2002 | US6345155 Light-emission control apparatus camera apparatus and light-emission control method |
| 02/05/2002 | US6344717 High frequency, high efficiency electronic lighting system with iodine and/or bromine-based metal halide high pressure discharge lamp |
| 02/05/2002 | CA2042258C Electrodeless hid lamp with microwave power coupler |
| 02/05/2002 | CA2042251C Electrodeless hid lamp with microwave power coupler |
| 01/31/2002 | WO2002009480A1 A system and method for determining the frequency of longitudinal mode required for color mixing in a discharge lamp |
| 01/31/2002 | WO2002009479A1 Method and apparatus for arc detection and protection for electronic ballasts |
| 01/31/2002 | WO2001074570A3 Apparatus and system for the production of plastic lenses |
| 01/31/2002 | US20020011809 Method for operating a lamp, particularly for medical applications, and a lamp having a discharge lamp |
| 01/31/2002 | US20020011807 Discharge lamp lighting apparatus and lighting appliance employing same |
| 01/31/2002 | US20020011806 Ballast circuit with independent lamp control |
| 01/31/2002 | US20020011804 Control circuit and method for protecting a piezoelectric transformer from an open state and a short-circuited state |
| 01/31/2002 | US20020011803 Method of and device for operating a gas discharge lamp |
| 01/31/2002 | US20020011802 Plasma lamp with dielectric waveguide |
| 01/31/2002 | US20020011801 Power feedback power factor correction scheme for multiple lamp operation |
| 01/31/2002 | US20020011791 Fluorescent lamp lighting apparatus |
| 01/31/2002 | US20020011764 Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer |
| 01/31/2002 | US20020011434 Point-of use water treatment system |
| 01/31/2002 | DE10133007A1 Entladungslampenzündschaltkreis Entladungslampenzündschaltkreis |
| 01/31/2002 | DE10033571A1 Carrier for electronic component e.g. for gas discharge lamp ignition module in motor vehicle, has plug housing in one piece with lead frame molding, and contact pins molded at least in transition region of contact pin and leadframe |
| 01/31/2002 | DE10013273A1 Electronic adapter for electric lamp has circuit board with controller for adapter, input pin(s) accessible by controller for at least two input values for at least two different circuit board modes |
| 01/30/2002 | EP1176855A2 High pressure discharge lamp driving apparatus, luminaire and high pressure discharge lamp driving method |
| 01/30/2002 | EP1176854A2 Reduction of the voltage between the socket connections of ballasts for gas discharge lamps |
| 01/30/2002 | EP1176853A1 Dielectric barrier discharge lamp light source |
| 01/30/2002 | EP1176852A2 High-frequency electronic converter, particularly for supplying power to cold-cathode lamps |
| 01/30/2002 | EP1176851A1 Discharge lamp device and switch for heating the electrodes |
| 01/30/2002 | EP1176707A1 Voltage converter circuit with self oscillating half bridge configuration and with protection against hard switching |
| 01/30/2002 | CN2475253Y Resonant induction type fluorescent lamp ballast |
| 01/30/2002 | CN2475252Y Semiconductor energy-saving lamp |
| 01/30/2002 | CN1078736C Pulsed gas-filled lamp |
| 01/29/2002 | US6342766 Power module for high intensity discharge lamp |
| 01/29/2002 | US6341879 High output flat-panel display back light module |
| 01/28/2002 | CA2354247A1 Reducing the clamping voltage of operating devices for gas discharge lamps |
| 01/28/2002 | CA2354192A1 Operating device for discharge lamps with switch relief for the preheating of electrode filaments |
| 01/24/2002 | WO2002007294A1 Inverter circuit with multilayer piezoelectric transformer |
| 01/24/2002 | WO2002007178A1 Self-powered switching device |
| 01/24/2002 | DE10033262A1 Verfahren und Schaltungsanordnung für den Betrieb einer Natriumhochdrucklampe Method and circuit for operating a high pressure sodium lamp |
| 01/23/2002 | EP1175131A2 Compact fluorescent lamp |
| 01/23/2002 | CN2473854Y Electronic ballast |
| 01/23/2002 | CN2473853Y Multi-way output daylight lamp electronic ballast |
| 01/23/2002 | CN2473852Y Daylight lamp starter base |
| 01/23/2002 | CN2473807Y Electronic transformer for haligen-tungsten lamp |
| 01/23/2002 | CN1332596A Method for eliminating heat of filament by lowering voltage of filament and delaying heating time |
| 01/23/2002 | CN1078438C 电路装置 Circuit device |
| 01/22/2002 | US6340870 Lighting circuit for discharge lamp |
| 01/22/2002 | US6340869 Method for operating direct current metal halogen arc lamp circuit pertaining thereto |
| 01/22/2002 | US6340864 Lighting control system including a wireless remote sensor |