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Class Information
Number: 315/308
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation > Regulator responsive to plural conditions
Description: Systems wherein the regulating means is responsive to two or more conditions; such as, the current and the voltage of the circuit, or a condition of the load device and the current or voltage of the circuit.


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
7615937 High-pressure discharge lamp lighting device and lighting fixture Nov. 10, 2009
7615940 Gate driver topology for maximum load efficiency Nov. 10, 2009
7609005 Circuitry for portable lighting devices and portable rechargeable electronic devices Oct. 27, 2009
7609008 Method and circuit for controlling an LED Oct. 27, 2009
7605549 System and method for current and/or temperature control of light fixture Oct. 20, 2009
7598685 Off line LED driver with integrated synthesized digital optical feedback Oct. 6, 2009
7595595 System and method for current and/or temperature control of light fixtures Sep. 29, 2009
7595786 Illumination system and illumination control method for adaptively adjusting color temperature Sep. 29, 2009
7592755 Light source driving circuit Sep. 22, 2009
7589477 Control method and ballast for run-up of metal halide lamp Sep. 15, 2009
7589472 Electronic ballast with lamp type determination Sep. 15, 2009
7586273 Method and apparatus for achieving perceived light mixing via alternating different colored LEDS Sep. 8, 2009
7576498 Organic EL drive circuit and organic EL display device using the same Aug. 18, 2009
7573210 Method and system for feedback and control of a luminaire Aug. 11, 2009
7573209 Method and system for feedback and control of a luminaire Aug. 11, 2009
7569997 Self-calibrated integration method of light intensity control in LED backlighting Aug. 4, 2009
7567041 Discharge lamp lighting apparatus and projector Jul. 28, 2009
7564199 Discharge lamp lighting circuit Jul. 21, 2009
7564200 Discharge lamp lighting circuit with frequency control in accordance with phase difference Jul. 21, 2009
7564195 Circuit of the electronic ballast with the capability of automatic restart Jul. 21, 2009
7564201 Intelligent gas discharge lamp control circuit Jul. 21, 2009
7560879 Method and apparatus for DC to AC power conversion for driving discharge lamps Jul. 14, 2009
7560877 Operation circuit for a discharge lamp and device for operation of a discharge lamp and a light source device Jul. 14, 2009
7560868 Ballast with filament heating and ignition control Jul. 14, 2009
7560880 Control device for work lamp Jul. 14, 2009
7557523 Discharge lamp lighting device, and lighting equipment and lighting system using the device Jul. 7, 2009
7554319 Circuits and methods for voltage sensing Jun. 30, 2009
7550933 Offline control circuit of LED driver to control the maximum voltage and the maximum current of LEDs Jun. 23, 2009
7550931 Controlled lighting methods and apparatus Jun. 23, 2009
7550934 LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response Jun. 23, 2009
7548031 Lighting apparatus for discharge lamp Jun. 16, 2009
7538498 Driving circuit of surface light source and method of driving the same May. 26, 2009
7535181 Method and device for ballast management in particular for a motor vehicle headlamp May. 19, 2009
7531970 Power source driving circuits and controllers thereof May. 12, 2009
7528555 LED controller IC using only one pin to dim and set a maximum LED current May. 5, 2009
7528556 Light regulation device May. 5, 2009
7528558 Ballast with ignition voltage control May. 5, 2009
7525256 HID buck and full-bridge ballast control IC Apr. 28, 2009
7525820 Inverter Apr. 28, 2009
7521878 Applications of halogen converter control IC Apr. 21, 2009
7511433 Discharge lamp lighting device and projector Mar. 31, 2009
7508142 Ballast control circuit for use with CCFL and EEFL lamps Mar. 24, 2009
7508143 Driving apparatus and method for driving light emitting elements, and projector Mar. 24, 2009
7504783 Circuit for driving and monitoring an LED Mar. 17, 2009
7504781 Method for driving a LED based lighting device Mar. 17, 2009
7504780 Power supply unit for light source and method of controlling the same Mar. 17, 2009
7504782 Discharge lamp lighting apparatus and projector Mar. 17, 2009
7498753 Color-compensating Fluorescent-LED hybrid lighting Mar. 3, 2009
7495398 Discharge lamp lighting apparatus Feb. 24, 2009
7492108 System and method for driving light-emitting diodes (LEDs) Feb. 17, 2009

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