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Class Information
Number: 315/291
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation
Description: Systems which include means to regulate the current and/or voltage supplied to the load device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7307390 |
Primary side constant output voltage controller |
Dec. 11, 2007 |
| 7307389 |
Digital ballast |
Dec. 11, 2007 |
| 7307385 |
Boost controller capable of step-up ratio control |
Dec. 11, 2007 |
| 7304442 |
Three component protective head gear powered by a rechargeable battery |
Dec. 4, 2007 |
| 7304440 |
Electron-emitting apparatus |
Dec. 4, 2007 |
| 7304439 |
Phase-controlled dimmable electronic ballasts for fluorescent lamps with very wide dimming range |
Dec. 4, 2007 |
| 7304438 |
Method and apparatus for preventing instabilities in radio-frequency plasma processing |
Dec. 4, 2007 |
| 7301784 |
Lighting control unit for vehicle lighting fixture |
Nov. 27, 2007 |
| 7301291 |
Power controller having current limited RMS regulated output |
Nov. 27, 2007 |
| 7301289 |
Discharge lamp lighting control device |
Nov. 27, 2007 |
| 7301288 |
LED buck regulator control IC |
Nov. 27, 2007 |
| 7301284 |
Lighting control circuit for vehicle lighting equipment |
Nov. 27, 2007 |
| 7298098 |
Intellectual lamp unit able to be installed on a conventional lamp socket controlled by a wall switch |
Nov. 20, 2007 |
| 7298097 |
Driver system and method with multi-function protection for cold-cathode fluorescent lamp and external-electrode fluorescent lamp |
Nov. 20, 2007 |
| 7298096 |
Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit |
Nov. 20, 2007 |
| 7298095 |
Discharge lamp ballast apparatus |
Nov. 20, 2007 |
| 7298093 |
Method and device for driving CCFL circuit |
Nov. 20, 2007 |
| 7298088 |
Arc tube and low-pressure mercury lamp |
Nov. 20, 2007 |
| 7295176 |
LED driver with constant current offset unit |
Nov. 13, 2007 |
| 7294979 |
Light source module with temperature sensor |
Nov. 13, 2007 |
| 7294978 |
Efficient lighting |
Nov. 13, 2007 |
| 7294977 |
Lamp dimming system and methods |
Nov. 13, 2007 |
| 7294976 |
Split power supply subsystem with isolated voltage supplies to satisfy a predetermined power limit |
Nov. 13, 2007 |
| 7294975 |
Method for controlling an inverter under altering voltage |
Nov. 13, 2007 |
| 7294974 |
Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
Nov. 13, 2007 |
| 7294973 |
Discharge tube lighting apparatus, light source apparatus, and display apparatus |
Nov. 13, 2007 |
| 7294968 |
Signal transmisson system and vehicular lamp |
Nov. 13, 2007 |
| 7291993 |
Method for driving a fluorescent lamp and an inverter circuit for performing such a method |
Nov. 6, 2007 |
| 7291992 |
Load failure protection circuit and discharge lamp driving apparatus |
Nov. 6, 2007 |
| 7291990 |
Discharge lamp lighting circuit |
Nov. 6, 2007 |
| 7291989 |
Lighting control circuit for vehicle lighting equipment |
Nov. 6, 2007 |
| 7291988 |
Electronic high intensity discharge lamp driver |
Nov. 6, 2007 |
| 7291987 |
Power supply system for flat panel display devices |
Nov. 6, 2007 |
| 7291984 |
Method of reducing RMS load voltage in a lamp using pulse width modulation |
Nov. 6, 2007 |
| 7288902 |
Color variations in a dimmable lighting device with stable color temperature light sources |
Oct. 30, 2007 |
| 7288901 |
Ballast with arc protection circuit |
Oct. 30, 2007 |
| 7288900 |
Illumination system having at least two light sources, and a method for operating such an illumination system |
Oct. 30, 2007 |
| 7288899 |
Light source, projector, and method of driving arc tube |
Oct. 30, 2007 |
| 7288897 |
Circuit arrangement for operating at least one high pressure discharge lamp |
Oct. 30, 2007 |
| 7286123 |
LED driver circuit having temperature compensation |
Oct. 23, 2007 |
| 7285925 |
Backlight module control circuit of multi-lamp display device |
Oct. 23, 2007 |
| 7285923 |
Display apparatus and driving pulse control method thereof |
Oct. 23, 2007 |
| 7285922 |
Driving apparatus for CCFL |
Oct. 23, 2007 |
| 7285921 |
Electric current balancing device |
Oct. 23, 2007 |
| 7282872 |
Discharge lamp lighting circuit |
Oct. 16, 2007 |
| 7282871 |
Backlight inverter for inductively detecting current |
Oct. 16, 2007 |
| 7282870 |
Driving apparatus for CCFL |
Oct. 16, 2007 |
| 7282868 |
Inverter circuit for discharge lamps for multi-lamp lighting and surface light source system |
Oct. 16, 2007 |
| 7280375 |
Circuit arrangement for operating at least one light-emitting diode |
Oct. 9, 2007 |
| 7279958 |
Synthesized resonation for an EL driver circuit |
Oct. 9, 2007 |
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