Patents
Sitemap › H05 - Electric techniques not otherwise provided for › H05B - Electric heating; Electric lighting not otherwise provided for › H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps
Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100)
07/1982
07/27/1982CA1128604A1 Energy conserving automatic light output system
07/27/1982CA1128603A1 Safety circuit for preventing excessive irradiation as a result of a defective timer
07/20/1982US4340844 Lighting equipment
07/20/1982US4340843 Keep-alive circuit for gas discharge lamp
07/14/1982EP0055995A1 Low-pressure discharge lamp starting and operating circuit using a DC source
07/13/1982US4339695 High pressure sodium lamp ballast circuit
07/13/1982US4339693 Arrangement including a gas and/or vapor discharge lamp
07/13/1982US4339692 Power supply for HID lamp
07/13/1982US4339690 Energy saving fluorescent lighting system
07/08/1982WO1982002314A1 Plasma charge transfer device
06/1982
06/29/1982US4337418 Starter unit for gas discharge lamps powered by alternating-current mains
06/29/1982US4337417 Starting and operating apparatus for high-pressure sodium lamps
06/29/1982US4337416 Electric flash apparatus
06/29/1982CA1126797A1 Core mounting for solenoidal electric field lamps
06/29/1982CA1126560A1 Switch control for camera flash unit
06/23/1982EP0054443A1 Circuit arrangement for igniting and gradually controlling a fluorescent lamp
06/23/1982EP0054301A1 Lighting circuit for a low-pressure discharge lamp
06/23/1982EP0054271A1 Discharge lamp starting and operating circuit
06/23/1982EP0054270A1 Starter and discharge lamp starting circuit
06/23/1982EP0054085A1 High intensity discharge lighting system
06/22/1982US4336481 Method of and apparatus for automatic electronic flash lamp control
06/22/1982CA1126326A1 Electron ballast apparatus for gaseous discharge lamps
06/16/1982EP0053951A1 Discharge lamp igniting circuit
06/15/1982US4334856 Photoflash array with selective pairing of lamps
06/15/1982CA1125839A1 Emergency/normal lighting circuit for a gaseous discharge lamp
06/08/1982US4334172 Adaptor for high intensity arc discharge lamps
06/08/1982CA1125357A2 Lighting circuits
06/01/1982US4332445 Flash light discharge tube control device
05/1982
05/27/1982WO1982001802A1 Device for controlling discharge lamps intended to the reading of documents
05/25/1982US4331905 Starting and operating circuit for gaseous discharge lamps
05/25/1982US4331406 Indicating device for computer type electronic flash unit
05/18/1982US4330737 Electronic flash system
05/18/1982US4330736 Compensated current feedback oscillator ballast for fluorescent lamps and the like
05/13/1982WO1982001637A1 Electronic ballast circuit
05/12/1982EP0051537A1 Discharge lamp starter
05/11/1982US4329629 Light source unit having a number of flash tubes
05/11/1982US4329627 High frequency thyristor circuit for energizing a gaseous discharge lamp
05/11/1982US4329623 Electronic flash apparatus
05/11/1982US4329622 Low pressure gas discharge lamp with increased end illumination
05/11/1982US4329621 Starter and discharge lamp starting circuit
05/11/1982CA1123484A1 Strobe without primary storage capacitor
05/04/1982US4328446 Method and apparatus for starting high intensity discharge lamps
05/04/1982CA1123044A1 Emergency lighting fluorescent pack
05/04/1982CA1123043A1 Photoflash lamp array circuit board having radiation sensitive fuse elements
04/1982
04/28/1982EP0050132A1 Supply apparatus.
04/28/1982EP0050131A1 Ballast for a discharge lamp.
04/27/1982US4327309 Fluorescent lamp power supply with low voltage lamp polarity reversal
04/27/1982US4327308 Simplified power source for fluorescent lamps
04/22/1982EP0020493A4 Fluorescent lamp lighting system.
04/21/1982EP0050058A1 Supply circuit comprising a pre-ionisation circuit for a flash-lamp
04/20/1982US4326149 Adaptor for high intensity arc discharge lamps
04/15/1982WO1982001276A1 Solid state ballast with high frequency inverter fault protection
04/14/1982EP0049466A2 Low energy starting aid for high intensity discharge lamps
04/14/1982EP0049465A2 Apparatus and method for starting high intensity discharge lamps
04/14/1982EP0049257A1 Control device for a converter-current valve for operating a gas discharge tube from a d.c. source
04/13/1982US4325008 Clamp assisted cycle control regulating system
04/13/1982US4325004 Method and apparatus for starting high intensity discharge lamps
04/13/1982US4324543 Photoflash array with selective pairing of lamps and switching of common circuit
04/07/1982EP0048977A2 Discharge lamp operating apparatus
04/06/1982US4323824 Low voltage fluorescent operating circuit
04/06/1982US4323823 Unitary ballast structure for operating four fluorescent lamps
04/06/1982US4323822 Electric flash device
04/06/1982US4323821 Luminaire converter
04/01/1982WO1982001113A1 Circuit for the activation of gas discharge lamps
03/1982
03/30/1982US4322789 Static converter of symmetrical type
03/30/1982US4322660 Starting and operating apparatus for high-pressure sodium lamps
03/30/1982US4322658 High intensity discharge lamp containing electronic starting aid
03/30/1982CA1120995A1 Discharge lamp starter circuit
03/30/1982CA1120994A1 Fast charging electronic flash device
03/24/1982EP0048137A1 Discharge tube firing circuit
03/24/1982EP0047892A1 Electronic flash with automatic light control
03/23/1982US4321507 Strobe power supply
03/16/1982US4320326 Electronic device for controlling the brightness of an electric gas discharge lamp without an incandescent cathode
03/16/1982US4320325 Circuit for starting and ballasting arc discharge lamps
03/16/1982US4319830 Multispectral light detection system
03/16/1982CA1120094A1 Emergency light system
03/09/1982US4319165 Electronic flash apparatus with function to bounce flash
03/02/1982US4318031 Lamp, ballast and starter visual monitor
02/1982
02/24/1982EP0046395A1 Dimming system for electric discharge lamps
02/23/1982US4317070 Circuits for flash equipment
02/23/1982US4317069 Means and method for controlling lumen output and power consumption of phosphor excitable lamps
02/18/1982WO1982000561A1 Installation for starting a discharge lamp with heated electrodes
02/16/1982US4316125 Power supply for a flash tube
02/16/1982US4316124 Mixed light arrangement
02/16/1982US4316121 Integrally ballasted fluorescent lamp unit
02/16/1982CA1118487A1 Lightweight fluorescent lamp ballast
02/02/1982US4314181 Arc discharge lamp starting device
01/1982
01/19/1982CA1116690A1 High frequency circuit for operating a high-intensity, gaseous discharge lamp
01/19/1982CA1116689A1 Metal vapour discharge lamp
01/12/1982US4310785 Electronic photographic flash apparatus
01/06/1982EP0043112A2 Discharge lamp operating circuit
01/05/1982CA1115766A1 High frequency operation of miniature metal vapor discharge lamps
01/05/1982CA1115765A1 Solenoidal electric field lamp dimming
12/1981
12/30/1981EP0042583A1 Ignition and operation circuit for a low-pressure discharge lamp
12/29/1981CA1115340A1 Pulse circuit for gaseous discharge lamps
12/29/1981CA1115339A1 Discharge lamp operating circuit
12/24/1981WO1981003731A1 Lighting system
12/23/1981EP0042127A1 Photoflash array with selective pairing of lamps
12/23/1981EP0042115A2 High pressure discharge lamp apparatus
12/22/1981US4307334 Transformer for use in a static inverter
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