| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 04/12/1997 | CA2181755A1 Electronic ballast for fluorescent lamp |
| 04/10/1997 | WO1997013391A1 Improvements in or relating to an electronic ballast for fluorescent lamps |
| 04/10/1997 | WO1997013187A1 Analogue function network for selecting a characteristic curve |
| 04/09/1997 | EP0767485A2 Electrodeless fluorescent lamp |
| 04/09/1997 | EP0767340A2 Discharge lamp having light-transmissive conductive coating for RF containment and heating, and lamp assembly containing the same |
| 04/09/1997 | EP0766906A1 Method and circuit arrangement for operating a high pressure discharge lamp |
| 04/09/1997 | CN2251857Y Electronic energy-saving ballast |
| 04/08/1997 | US5619402 Higher-efficiency cold-cathode fluorescent lamp power supply |
| 04/08/1997 | US5619106 Diodeless start circiut for gas discharge lamp having a voltage divider connected across the switching element of the inverter |
| 04/08/1997 | US5619105 For protecting an electronic ballast |
| 04/08/1997 | US5619104 Multiplier that multiplies the output voltage from the control circuit with the voltage from the boost circuit |
| 04/03/1997 | WO1997012500A1 Fixed-cycle power-supply circuit with an at least temporarily active consumer-independent load |
| 04/03/1997 | WO1997012499A1 Method of operating a high-frequency high-pressure gas discharge lamp |
| 04/03/1997 | WO1997012498A1 Method and device for controlling the power of a high-pressure gas-discharge lamp |
| 04/03/1997 | WO1997012308A1 In-rush current reduction circuit for boost converters and electronic ballasts |
| 04/03/1997 | DE19536644A1 Analoges Funktionsnetzwerk zur Vorgabe einer Kennlinie The same function network for presetting a characteristic |
| 04/03/1997 | DE19536064A1 Getaktete Stromversorgungsschaltung mit einer von einem Verbraucher unabhängigen, zumindest zeitweise wirksamen Last Pulsed power supply circuit with a consumer by a independent, at least intermittently active load |
| 04/02/1997 | EP0766500A1 Ballast with balancer transformer for fluorescent lamps |
| 04/02/1997 | EP0766499A1 Timing of different phases in an ignition circuit |
| 04/02/1997 | EP0765593A1 Fluorescent tube control |
| 04/02/1997 | EP0662277B1 Clocked current supply circuit |
| 04/02/1997 | EP0554350B1 High power lamp |
| 04/02/1997 | EP0548342B1 Fluorescent lamp ballast for pulsed-mode operation |
| 04/02/1997 | CN2251242Y Pulling type electronic starter for fluorescent lamp |
| 04/02/1997 | CN2251241Y 镇流器 Ballast |
| 04/02/1997 | CN2251240Y Power factor booster for electronic ballast |
| 04/02/1997 | CN2251239Y Voltage-increasing type fluorescent lamp glow starter |
| 04/02/1997 | CN1146847A Circuit arrangement for ignition of a high intensity discharge lamp |
| 04/01/1997 | US5617112 Display control device for controlling brightness of a display installed in a vehicular cabin |
| 04/01/1997 | US5616992 Electronic starter circuit for fluorescent lamp |
| 04/01/1997 | US5616990 Ballast scheme for a fluorescent lamp with preheated filaments |
| 03/27/1997 | WO1997011586A1 Method of regulating lamp current through a fluorescent lamp by pulse energizing a driving supply |
| 03/27/1997 | WO1997011585A1 Resonant voltage-multiplication, current-regulating and ignition circuit for a fluorescent lamp |
| 03/27/1997 | WO1997011584A1 Circuit for starting and operating a high-pressure gas discharge lamp operated by a controlled a.c. current |
| 03/27/1997 | WO1997011583A1 A method and an arrangement for controlling gas discharge lamps |
| 03/27/1997 | WO1997011582A1 Thermally-protected control apparatus containing electrical components |
| 03/27/1997 | WO1997011581A1 Control device for the fast striking of a high-pressure gas discharge lamp |
| 03/27/1997 | WO1997011580A1 Preheating and starting circuit and method for a fluorescent lamp |
| 03/27/1997 | DE19638932A1 Low pressure gas-discharge lamp with no electrodes |
| 03/27/1997 | DE19536634A1 Energy-saving lamp |
| 03/27/1997 | DE19536142A1 Thermisch geschütztes, elektrische Bauelemente enthaltendes Steuergerät Thermally protected, electrical components containing controller |
| 03/27/1997 | DE19535663A1 Verfahren und Anordnung zur Leistungssteuerung einer Hochdruck-Gasentladungslampe Method and arrangement for controlling power of a high-pressure gas discharge lamp |
| 03/27/1997 | DE19535662A1 Betriebsweise für eine hochfrequent betriebene Hochdruck-Gasentladungslampe Operation of a high-frequency driven high-pressure gas discharge lamp |
| 03/27/1997 | DE19534864A1 Steuergerät für den schnellen Lichtanlauf einer Hochdruck-Gasentladungslampe Control unit for the quick starting of the light of a high pressure gas discharge lamp |
| 03/27/1997 | DE19534861A1 Schaltungsanordnung für Start und Betrieb einer mit gesteuertem Wechselstrom betriebenen Hochdruck-Gasentladungslampe Circuit arrangement for starting and operating a powered AC with controlled high-pressure gas discharge lamp |
| 03/26/1997 | EP0765109A2 Gas discharge lamps and systems |
| 03/26/1997 | EP0765108A2 High intensity discharge lamp lighting device |
| 03/26/1997 | EP0765107A1 circuit arrangement for avoiding striations |
| 03/26/1997 | CN2250623Y Electronic trigger for high voltage sodium lamp |
| 03/26/1997 | CN2250622Y Pulse xenon lamp power source |
| 03/26/1997 | CN2250621Y High efficiency energy saving electronic day-light lamp |
| 03/26/1997 | CN1146272A Method for igniting and operating high-pressure discharge lamp and circuit for performing the method |
| 03/25/1997 | US5615093 For converting an input power signal to an output power signal |
| 03/25/1997 | CA2102466C High-frequency power unit for neon tubes |
| 03/20/1997 | WO1997010687A1 Ballasting system for fluorescent lamps having improved energy transfer |
| 03/20/1997 | WO1997010608A1 Ballast for discharge lamp and method and apparatus for manufacturing the same |
| 03/20/1997 | DE19637906A1 Electronic ballast for UV radiator |
| 03/19/1997 | EP0763966A2 Cold cathode tube lighting device using piezoelectric transformer |
| 03/19/1997 | EP0763312A1 Circuit arrangement |
| 03/19/1997 | EP0763311A1 Discharge lamp ballast |
| 03/19/1997 | EP0763276A1 Switching power supply for the operation of electric lamps |
| 03/19/1997 | EP0663139A4 Electrodeless lamp with bulb rotation. |
| 03/19/1997 | CN1145713A A lighting system with a device for reducing system wattage |
| 03/19/1997 | CN1145483A Circuit and method for controlling backlight of liquid crystal display in portable computer |
| 03/18/1997 | US5612857 Power supply apparatus |
| 03/18/1997 | US5612597 Oscillating driver circuit with power factor correction, electronic lamp ballast employing same and driver method |
| 03/18/1997 | US5612595 Electronic dimming ballast current sensing scheme |
| 03/18/1997 | US5612594 Electronic dimming ballast feedback control scheme |
| 03/18/1997 | US5612593 Fluorescent tube thermal management system utilizing thermal electric cooler units |
| 03/18/1997 | US5611918 Electronic driver for water treatment system UV bulb |
| 03/12/1997 | EP0762809A2 Discharge lamp device |
| 03/12/1997 | EP0762808A2 Inverter power source apparatus using a piezoelectric transformer |
| 03/12/1997 | EP0762807A2 Circuit for operating glow discharge lamps |
| 03/12/1997 | CN2249483Y Multivoltage fluorescent-lamp ballast |
| 03/12/1997 | CN2249482Y Flexible starting fluorescent lamp without ballast |
| 03/12/1997 | CN2249481Y Multi-voltage electronic ballast with filtering function |
| 03/12/1997 | CN1145138A Circuit device and junction field transistor suitable for the circuit device |
| 03/11/1997 | US5610479 Circuit arrangement for operating low-pressure discharge lamps |
| 03/11/1997 | US5610477 Low breakdown voltage gas discharge device and methods of manufacture and operation |
| 03/06/1997 | WO1997008923A1 Circuit arrangement for operating a high-pressure gas discharge lamp on alternating current |
| 03/06/1997 | WO1997008922A1 Ballast |
| 03/06/1997 | WO1997008921A1 Striking circuit for a high-pressure gas discharge lamp |
| 03/06/1997 | WO1997008920A1 Process and circuit for striking a high-pressure gas discharge lamp |
| 03/06/1997 | WO1997008813A1 Transformerless high-voltage generator circuit |
| 03/06/1997 | DE19641271A1 Operating high voltage warm cathode fluorescent tube |
| 03/06/1997 | DE19635909A1 Sequential feedback control system for electronic ballast |
| 03/06/1997 | DE19531623A1 Verfahren und Schaltungsanordnung zum Zünden einer Hochdruck-Gasentladungslampe Method and circuit arrangement for igniting a high-pressure gas discharge lamp |
| 03/06/1997 | DE19531622A1 Zündschaltung für eine Hochdruck-Gasentladungslampe Ignition circuit for a high pressure gas discharge lamp |
| 03/06/1997 | CA2203275A1 Ballast |
| 03/05/1997 | EP0669075B1 Circuit arrangement for operating low-pressure discharge lamps |
| 03/05/1997 | CN2248963Y Electronic starter |
| 03/05/1997 | CN1144341A Back-lit circuit for LCD |
| 03/04/1997 | US5608296 For a high intensity discharge lamp having a glow mode |
| 03/04/1997 | US5608295 Cost effective high performance circuit for driving a gas discharge lamp load |
| 03/04/1997 | US5608294 High pressure lamp operating circuit with suppression of lamp flicker |
| 03/04/1997 | US5608293 Lamp circuit arrangement for controlling current flow through switching element |
| 03/04/1997 | US5608292 Single transistor ballast with filament preheating |
| 03/04/1997 | US5608291 Electronic ballast with pulsing output voltage |
| 03/04/1997 | US5608289 Fluorescent lamp adapter with shell form ballast |
| 02/27/1997 | DE19531458A1 Operation of fluorescent lamp |