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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7589472 |
Electronic ballast with lamp type determination |
Sep. 15, 2009 |
| 7589477 |
Control method and ballast for run-up of metal halide lamp |
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 |
| 7564195 |
Circuit of the electronic ballast with the capability of automatic restart |
Jul. 21, 2009 |
| 7564200 |
Discharge lamp lighting circuit with frequency control in accordance with phase difference |
Jul. 21, 2009 |
| 7564201 |
Intelligent gas discharge lamp control circuit |
Jul. 21, 2009 |
| 7564199 |
Discharge lamp lighting circuit |
Jul. 21, 2009 |
| 7560877 |
Operation circuit for a discharge lamp and device for operation of a discharge lamp and a light source device |
Jul. 14, 2009 |
| 7560880 |
Control device for work lamp |
Jul. 14, 2009 |
| 7560879 |
Method and apparatus for DC to AC power conversion for driving discharge lamps |
Jul. 14, 2009 |
| 7560868 |
Ballast with filament heating and ignition control |
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 |
| 7550934 |
LED driver with fast open circuit protection, short circuit compensation, and rapid brightness control response |
Jun. 23, 2009 |
| 7550931 |
Controlled lighting methods and apparatus |
Jun. 23, 2009 |
| 7550933 |
Offline control circuit of LED driver to control the maximum voltage and the maximum current of LEDs |
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 |
| 7504782 |
Discharge lamp lighting apparatus and projector |
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 |
| 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 |
| 7489090 |
Electronic ballast having adaptive frequency shifting |
Feb. 10, 2009 |
| 7486029 |
Circuit for detecting end of life of fluorescent lamp |
Feb. 3, 2009 |
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