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Class Information
Number: 315/277
Name: Electric lamp and discharge devices: systems > Pulsating or a.c. supply > Transformer in the supply circuit > Plural transformers in the supply circuit
Description: Systems provided with two or more transformers in the supply circuit of the load device.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8664871 High voltage power supply for powering a magnetron in a UV curing lamp assembly Mar. 4, 2014
8629627 Multi-transformer LLC resonant converter circuits and methods Jan. 14, 2014
8587226 Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Nov. 19, 2013
8517593 Wireless power feeder, light source cartridge, and wireless illumination system Aug. 27, 2013
8492991 Lighting fixture system for illumination using cold cathode fluorescent lamps Jul. 23, 2013
8476845 Brightness control for lighting fixtures Jul. 2, 2013
8362709 Current balance circuit having protection function, and power supply Jan. 29, 2013
8344643 Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Jan. 1, 2013
8247983 Lamp driving circuit Aug. 21, 2012
8222836 Balancing transformers for multi-lamp operation Jul. 17, 2012
8193722 Circuit arrangement having a transformation apparatus and operating method for a lamp using a circuit arrangement having a transformation apparatus Jun. 5, 2012
8164270 Discharge lamp lighting circuit Apr. 24, 2012
8134845 Electromagnetic interference suppressing apparatus for high-frequency signal generation device Mar. 13, 2012
8120271 Multi-lamp driving circuit Feb. 21, 2012
8098019 Driving circuit of multi-lamps Jan. 17, 2012
8084954 Lamp driving circuit Dec. 27, 2011
8072156 Discharge lamp operating system Dec. 6, 2011
8072159 Multi-lamp driving circuit Dec. 6, 2011
8054009 Lamp driving device and liquid crystal display device having the same Nov. 8, 2011
8030850 Fluorescent lamp driving apparatus with abnormality detection circuit Oct. 4, 2011
8008867 Arrangement suitable for driving floating CCFL based backlight Aug. 30, 2011
8004202 Apparatus and method for driving backlight Aug. 23, 2011
7990072 Balancing arrangement with reduced amount of balancing transformers Aug. 2, 2011
7973496 Resonant driver with low-voltage secondary side control for high power LED lighting Jul. 5, 2011
7973491 Multi-lamp backlight apparatus Jul. 5, 2011
7948191 Parallel transformer with output side electrical decoupling May. 24, 2011
7944152 Two-stage balancer for multi-lamp backlight May. 17, 2011
7936136 Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display May. 3, 2011
7932683 Balancing transformers for multi-lamp operation Apr. 26, 2011
7919930 Coil component and display device using same Apr. 5, 2011
7891820 Projector and method for igniting lamp Feb. 22, 2011
7893629 Backlight apparatus capable of short prevention and voltage feedback compensation Feb. 22, 2011
7880407 Driver system and method with cyclic configuration for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Feb. 1, 2011
7876055 Lamp-lighting apparatus Jan. 25, 2011
7852018 Apparatus and method of driving lamp of liquid crystal display device Dec. 14, 2010
7843143 Apparatus for driving lamps and liquid crystal display having the same Nov. 30, 2010
7834559 Lamp circuit of liquid crystal device backlight source Nov. 16, 2010
7830099 System for driving a plurality of lamps Nov. 9, 2010
7825608 Multi-discharge tube lighting apparatus Nov. 2, 2010
7808188 Driving circuit for lamp Oct. 5, 2010
7791286 Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display Sep. 7, 2010
7786681 Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display Aug. 31, 2010
7777428 Apparatus and method for controlling driving of lamp Aug. 17, 2010
7777431 Inverter circuit, fluorescent bulb operating device, backlight device, and liquid crystal display device Aug. 17, 2010
7772785 Parallel lighting system for surface light source discharge lamps Aug. 10, 2010
7759877 Driving system for electronic device and current balancing circuit thereof Jul. 20, 2010
7753578 Liquid crystal display Jul. 13, 2010
7750581 Driver system and method for multiple cold-cathode fluorescent lamps and/or external-electrode fluorescent lamps Jul. 6, 2010
7741790 Backlight system having a lamp current balance and feedback mechanism and related method thereof Jun. 22, 2010
7733031 Starting fluorescent lamps with a voltage fed inverter Jun. 8, 2010

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