| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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| 02/04/1998 | CN2273942Y Starting switch of fluorescent lamp with protection function |
| 02/04/1998 | CN2273807Y Full automatic conversion type two purpose lamp for lighting and for emergency use |
| 02/03/1998 | US5714848 Variable color discharge lamp |
| 02/03/1998 | US5714846 Minimum harmonic distortion operating circuit for at least one low-pressure discharge lamp |
| 02/03/1998 | US5714845 Method and circuit arrangement for operating a high pressure gas discharge lamp |
| 02/03/1998 | US5714835 Xenon excimer radiation source with fluorescent materials |
| 01/29/1998 | WO1998004103A1 Inverter protection method and protection circuit for fluorescent lamp preheat ballasts |
| 01/28/1998 | EP0821547A2 Method and apparatus for accommodating multiple dimming strategies |
| 01/28/1998 | EP0821546A2 Lighting circuit for discharge lamp |
| 01/28/1998 | EP0746867A4 Gas discharge lamp and power distribution system therefor |
| 01/28/1998 | CN2273478Y Electronic trigger ballast for high-voltage sodium lamp |
| 01/28/1998 | CN2273477Y Mounting support for starter of fluorescent lamp |
| 01/28/1998 | CN1171717A Fluorescent lamp lighting apparatus |
| 01/27/1998 | US5712776 Starting circuit and method for starting a MOS transistor |
| 01/27/1998 | US5712536 Reduced bus voltage integrated boost high power factor circuit |
| 01/22/1998 | DE19629207A1 Compact fluorescent lamp brightness control method |
| 01/21/1998 | EP0819317A1 Apparatus for exciting an electrodeless lamp with microwave radiation |
| 01/21/1998 | CN2273089Y Quick high-efficienct energy-saving starter for fluoreascent lamp |
| 01/20/1998 | US5710489 Overvoltage and thermally protected electronic ballast |
| 01/20/1998 | US5710488 Low-frequency high-efficacy electronic ballast |
| 01/20/1998 | US5710487 Ballast circuit for gaseous discharge lamps without inductive electrical components or filaments |
| 01/16/1998 | CA2181197A1 Non flickering fluorescent lamp |
| 01/15/1998 | DE19627703A1 Device to operate gas discharge lamp under AC-equivalent conditions using DC |
| 01/14/1998 | EP0818867A1 Circuit arrangement |
| 01/14/1998 | EP0818130A1 Method and apparatus for direct current pulsed ionization lighting |
| 01/14/1998 | EP0818129A1 Control and protection of dimmable electronic fluorescent lamp ballast with wide input voltage range and wide dimming range |
| 01/14/1998 | EP0818128A1 Elimination of striations in fluorescent lamps driven by high-frequency ballasts |
| 01/14/1998 | EP0818127A1 Lamp protective, electronic ballast |
| 01/13/1998 | US5708878 Flash control circuit |
| 01/13/1998 | US5708330 Resonant voltage-multiplication, current-regulating and ignition circuit for a fluorescent lamp |
| 01/07/1998 | EP0817544A2 Irradiating device |
| 01/07/1998 | EP0817543A2 Diodeless start circuit of an inverter for gas discharge lamp |
| 01/07/1998 | EP0817542A1 Discharge lamp lighting device |
| 01/07/1998 | CN2272181Y High-pressure sodium lamp internal trigger |
| 01/06/1998 | US5706185 Control apparatus for a lighting system of a discharge lamp used in various types of vehicles |
| 01/06/1998 | US5705920 Power supply apparatus |
| 01/06/1998 | US5705898 Lighting circuit for discharge lamp which restricts inversion of output voltage polarity |
| 01/06/1998 | US5705897 Apparatus for lighting alternating current discharge lamp |
| 01/06/1998 | US5705896 Control electronic ballast system using feedback |
| 01/06/1998 | US5705894 Method for operating at least one fluorescent lamp with an electronic ballast, as well as ballast therefor |
| 01/06/1998 | US5705883 Reduced length compact fluorescent lamp and method of forming same |
| 01/06/1998 | US5705879 Discharge tube driving device and piezoelectric transformer therefor |
| 01/06/1998 | US5705877 Piezoelectric transformer driving circuit |
| 01/06/1998 | US5705808 Flash tube devices with a controllable electrical energy |
| 01/02/1998 | DE19625077A1 Ballast unit for fluorescent lamp |
| 01/02/1998 | DE19624243A1 Discharge lamp esp for motor vehicle head-light |
| 12/31/1997 | WO1997042651A3 Integrated hid reflector lamp |
| 12/31/1997 | CN2271792Y Fluorescent lamp tube starting ballast having wide work voltage range |
| 12/31/1997 | CN2271791Y Energy saving electrical induction ballast |
| 12/31/1997 | CN1169054A Conversion device with output modulation circuit |
| 12/31/1997 | CN1169020A Compact fluorescent lamp adapter |
| 12/30/1997 | US5703891 Pulse forming network assembly |
| 12/30/1997 | US5703441 Multi-function filament-heater power supply for an electronic ballast for long-life dimmerable lamps |
| 12/30/1997 | US5703440 Compact fluorescent lamp and ballast arrangement with inductor directly between lamp ends |
| 12/30/1997 | US5703439 Lamp power supply circuit with electronic feedback circuit for switch control |
| 12/30/1997 | US5702179 Discharge lamp having light-transmissive conductive coating for RF containment and heating |
| 12/26/1997 | CA2179872A1 Fluorescent lighting system |
| 12/24/1997 | WO1997049268A1 Circuit for reversing polarity on electrodes |
| 12/24/1997 | CN1168457A Ring fluorescent lamp and illuminating lamps and lanterns |
| 12/23/1997 | US5701059 Elimination of striations in fluorescent lamps driven by high-frequency ballasts |
| 12/17/1997 | EP0813354A1 Compact fluorescent lamp adapter |
| 12/17/1997 | EP0777872A4 Low frequency square wave electronic ballast for gas discharge devices |
| 12/17/1997 | EP0601091B1 Resonance mode converter with a series-parallel resonance |
| 12/17/1997 | CN2271087Y Modular stroboscopic controller |
| 12/17/1997 | CN1168220A Circuit arrangement |
| 12/17/1997 | CN1168219A Circuit arrangement |
| 12/17/1997 | CN1168218A Circuit arrangement |
| 12/17/1997 | CN1168202A Circuit arrangement |
| 12/16/1997 | US5699238 Zero voltage switching controller of resonance mode converter and electronic ballast using the same |
| 12/16/1997 | US5698952 Method and apparatus for direct current pulsed ionization lighting |
| 12/16/1997 | US5698951 Electrodeless discharge lamp and device for increasing the lamp's luminous development |
| 12/16/1997 | US5698950 Suppressor for an electronic ballast in a discharge lamp |
| 12/11/1997 | WO1997046782A1 Foam core spacer assembly |
| 12/11/1997 | DE19723625A1 Light current circuit for discharge lamps with power control unit |
| 12/11/1997 | DE19706491A1 Compact starter circuit for use with AC mains-fed electrical arc lamps |
| 12/11/1997 | DE19622807A1 Arc lamp regulation for arc lamp operated with low frequency AC voltage |
| 12/11/1997 | DE19622801A1 Circuit arrangement for gas-discharge lamp |
| 12/10/1997 | EP0811306A1 Starter for a high-pressure gas-discharge lamp |
| 12/10/1997 | EP0811305A1 Fluorescent tube control and starting aid device |
| 12/10/1997 | CN2270339Y Fast dc glow starter for fluorescent lamp |
| 12/10/1997 | CN2270338Y Split-type electro-optical source electronic transformer |
| 12/10/1997 | CN1167421A Electronics ballast for gas discharge lamp having primary and auxiliary resonant circuits |
| 12/09/1997 | US5696670 Power supply for arc-discharge load |
| 12/09/1997 | US5696431 Inverter driving scheme for capacitive mode protection |
| 12/04/1997 | WO1997045858A1 Multiple reflection electrodeless lamp with sulfur or selenium fill and method for providing radiation using such a lamp |
| 12/04/1997 | DE19621879A1 Power-saving lamp system with Edison-screw base and dimmable HF starter unit |
| 12/04/1997 | CA2256689A1 Multiple reflection electrodeless lamp with sulfur or sellenium fill and method for providing radiation using such a lamp |
| 12/03/1997 | EP0809923A1 Circuit for operating a discharge lamp |
| 12/03/1997 | CN2269689Y L,L-C type combined ballast |
| 12/03/1997 | CN2269688Y Electronic starter for daylight lamp |
| 12/03/1997 | CN1166772A Discharger of short-arc pulsed gas discharge lamp |
| 12/02/1997 | US5694008 Lamp starting apparatus for liquid crystal projector |
| 12/02/1997 | US5694007 Discharge lamp lighting system for avoiding high in-rush current |
| 12/02/1997 | US5694006 Single switch ballast with integrated power factor correction |
| 11/27/1997 | WO1997044989A1 Circuit arrangement |
| 11/27/1997 | DE19620672A1 Procedure for controlling studio fluorescent tube lighting with dimmable ballast units |
| 11/26/1997 | EP0808552A1 Ballast system |
| 11/26/1997 | EP0808551A1 Ballast system |
| 11/26/1997 | EP0746964A4 Fault tolerant electronic ballast |
| 11/26/1997 | EP0746809A4 Electronic ballast with low harmonic distortion |