| Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
|---|
| 06/27/1989 | US4843282 Glow discharge starter containing silver |
| 06/21/1989 | EP0320944A1 Converter for a discharge lamp |
| 06/21/1989 | CN2039890U Power saving fluorescent lamp without stroboflash |
| 06/20/1989 | CA1256156A1 Ballast adaptor for improving operation of fluorescent lamps |
| 06/14/1989 | CN2039455U Switch for fluorescent lamp without starter |
| 06/13/1989 | USRE32953 Electronic fluorescent lamp ballast with overload protection |
| 06/13/1989 | US4839686 Flash device |
| 06/13/1989 | US4839565 High pressure double wall sodium arc tube and methods of operating such |
| 06/13/1989 | CA1255744A1 Circuit arrangement for igniting and operating gas discharge lamps |
| 06/07/1989 | EP0319003A2 Supply circuit for a low or high pressure discharge lamp, a mercury vapour lamp or the like |
| 06/07/1989 | CN2039095U Universal flash lamp |
| 06/07/1989 | CN2039094U Electronic ballast for fluorescent lamp |
| 06/07/1989 | CN2039093U Electronic ballast for adjustable light |
| 06/07/1989 | CN2039092U Power supply device for lighting |
| 06/06/1989 | CA1255356A1 Metal vapor lamp starting and operating apparatus |
| 05/31/1989 | EP0318110A1 DC/AC bridge circuit |
| 05/31/1989 | EP0317698A1 Neon tube lighting device |
| 05/31/1989 | CN2038702U Electronic ballast for high-voltage sodium lamp |
| 05/31/1989 | CN2038701U Fluorescent lamp excited by high frequency field |
| 05/31/1989 | CN2038700U Low-voltage ballast with quickly starting feature |
| 05/31/1989 | CN2038662U Automatic starting switch for fluorescent lamp |
| 05/30/1989 | CA1254939A1 Control circuit for gas discharge lamps |
| 05/24/1989 | CN2038307U Electronic energy-saving controller for fluorescent light |
| 05/24/1989 | CN1033139A Pulsating electronic light source |
| 05/23/1989 | US4833577 Light source in a subdivided arrangement |
| 05/23/1989 | CA1254610A1 High frequency gas discharge lamp dimming ballast |
| 05/17/1989 | EP0107019B1 Lamp, in particular a signalling lamp for water-borne vehicles |
| 05/17/1989 | CN2037917U Flash synchronizer |
| 05/17/1989 | CN2037916U Switch box of fluorescent lamp |
| 05/17/1989 | CN2037915U Electronic ballast for energy-saving fluorescent lamp |
| 05/17/1989 | CN2037914U Safe fluorescent-lamp starter |
| 05/17/1989 | CN1032974A Durable fluorescent lamp |
| 05/16/1989 | US4831564 Apparatus for estimating and displaying remainder of lifetime of xenon lamps |
| 05/11/1989 | DE3736324A1 Circuit arrangement for saving energy by inductively lowering the mains voltage for low-pressure and high-pressure discharge lamps and mercury-vapour lamps |
| 05/10/1989 | CN2037526U Capacitive reactance type fluorescent lamp starter |
| 05/10/1989 | CN2037525U Integrative effective power-saving fluorescent lamp |
| 05/10/1989 | CN2037524U High speed, power-saving fluorescent lamp ballast |
| 05/10/1989 | CN2037523U Power-saving double-fluorescent lamp ballast |
| 05/10/1989 | CN2037522U Ultraviolet lamp starter |
| 05/10/1989 | CN2037521U Automatic electronic timing commutator |
| 05/10/1989 | CN2037520U Electry-saving fluorescent lamp starter switch |
| 05/09/1989 | CA1253913A1 High-pressure sodium discharge lamp |
| 05/03/1989 | EP0314178A1 Ignition circuit for high-pressure met2l vapour discharge lamps |
| 05/03/1989 | EP0314077A2 Discharge lamp driving circuit |
| 05/03/1989 | CN2037024U Multifunctional color-changing lamp and lantern |
| 05/02/1989 | US4827313 Mechanism and method for controlling the temperature and output of an amalgam fluorescent lamp |
| 04/27/1989 | DE3735130A1 Plasma light source arrangement |
| 04/26/1989 | EP0313135A1 DC/AC converter for igniting and supplying a gas discharge lamp |
| 04/26/1989 | EP0313134A1 DC/AC converter for igniting and supplying a gas discharge lamp |
| 04/26/1989 | CN2036736U Controller for miniature arc lamp |
| 04/26/1989 | CN2036735U Fluorescent lamp combined switch capable of starting at low voltage |
| 04/26/1989 | CN2036734U Quickly starting switch for fluorescent lamp |
| 04/26/1989 | CN2036733U Electronic starter for fluorescent lamp |
| 04/26/1989 | CN2036732U Low-voltage starter for fluorescent light |
| 04/25/1989 | US4825128 Compact discharge lamp with conductive coating capacitvely coupled to high frequency supply |
| 04/25/1989 | CA1253199A1 Remote control of dimmable electronic gas discharge lamp ballasts |
| 04/25/1989 | CA1253197A1 Control circuit for electronic flash |
| 04/19/1989 | EP0311995A2 Power saving circuitry |
| 04/19/1989 | CN2036308U Pull swtich with glow starting function of fluorescent lamp |
| 04/19/1989 | CN1032453A Display device with lighting |
| 04/12/1989 | EP0311424A2 High frequency ballast for gaseous discharge lamps |
| 04/12/1989 | EP0311183A1 Electric arrangement for igniting and supplying a gas discharge lamp |
| 04/12/1989 | CN2035947U Sensitive regulator for light of fluorescent lamp |
| 04/12/1989 | CN2035912U Switch with starter holder |
| 04/11/1989 | USRE32904 Power supply for gas discharge devices |
| 04/05/1989 | EP0310218A1 Compact fluorescent lamp circuit |
| 04/05/1989 | CN2035551U Adjustable power saving ballast |
| 04/05/1989 | CN2035424U Dc fluorescent light |
| 04/05/1989 | CN1003829B Electrodeless low voltage discharge lamp |
| 04/05/1989 | CN1003828B High voltage sodium discharge lamp |
| 04/04/1989 | USRE32901 Series-resonant electronic ballast circuit |
| 04/04/1989 | US4819146 Resonant inverter having frequency control |
| 04/04/1989 | US4818918 High frequency lighting system for gas discharge lamps |
| 04/04/1989 | US4818917 Circuit for starting and operating a gaseous discharge lamp |
| 03/29/1989 | EP0308975A1 Cold cathode discharge tube |
| 03/29/1989 | EP0308634A1 Power supplies for electroluminescent lamps or panels |
| 03/29/1989 | CN2035161U Lc ballast for fluorescent lamp |
| 03/29/1989 | CN1032095A Dc fluorescent lamp device |
| 03/28/1989 | US4816850 Flash condition indicator device for cameras |
| 03/28/1989 | US4816741 Switched resistor regulator with diode-snubber for parasitic inductance in switched resistor |
| 03/28/1989 | US4816721 Circuit arrangement for operating a high-pressure gas discharge lamp |
| 03/28/1989 | US4816720 Discharge lamp operating circuit |
| 03/28/1989 | US4815848 Device for the individual adjustment of the intensity of several spectral lamps |
| 03/23/1989 | DE3731153A1 Circuit arrangement for regulated high-energy pulse production for gas-discharge flashlamps |
| 03/22/1989 | EP0179778B1 Adapter for releasibly connecting electric lighting apparatuses |
| 03/22/1989 | CN2034761U Adjustable light electronic ballast for fluorescent lamp |
| 03/22/1989 | CN2034760U High efficacy energy-saving regulator for fluorescent lamp |
| 03/22/1989 | CN2034703U Flashy synchronous inductor |
| 03/21/1989 | US4814966 Shunt switched resistor regulator with diode snubber |
| 03/15/1989 | EP0307065A2 Driving of discharge lamp |
| 03/15/1989 | EP0307057A1 Energy convertor |
| 03/15/1989 | EP0179773B1 Film video player with electronic strobe light |
| 03/15/1989 | CN2034362U Fluorescent lamp for illumination in urgent need |
| 03/15/1989 | CN2034289U Synchronous electronic flash lamp with controlled power |
| 03/14/1989 | US4812736 Circuit arrangement for operating high-pressure gas discharge lamps |
| 03/14/1989 | US4812702 Excitation coil for hid electrodeless discharge lamp |
| 03/09/1989 | EP0282488A4 A high intensity discharge lamp self-adjusting ballast system with current limiters and a current feed-back loop. |
| 03/08/1989 | EP0306086A1 Circuit arrangement for starting a high-pressure gas discharge lamp |
| 03/07/1989 | US4811186 High frequency-high voltage power converter circuit |
| 03/07/1989 | US4810938 High efficacy electrodeless high intensity discharge lamp |