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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 |
| 7333027 |
Power supply for LED signal |
Feb. 19, 2008 |
| 7332876 |
Lighting apparatus for discharge lamp |
Feb. 19, 2008 |
| 7332875 |
Illumination apparatus, and an illumination head and power source device used therefore |
Feb. 19, 2008 |
| 7332873 |
Electrical circuit for fluorescent lamps |
Feb. 19, 2008 |
| 7332871 |
High frequency power source control circuit and protective circuit apparatus |
Feb. 19, 2008 |
| 7332868 |
Discharge lamp lighting device |
Feb. 19, 2008 |
| 7332867 |
Apparatus and method for driving lamp of liquid crystal display device |
Feb. 19, 2008 |
| 7330003 |
Backlight control circuit with two transistors |
Feb. 12, 2008 |
| 7330002 |
Circuit for controlling LED with temperature compensation |
Feb. 12, 2008 |
| 7330000 |
Discharge lighting bulbs control system |
Feb. 12, 2008 |
| 7329999 |
Lamp lighting circuit |
Feb. 12, 2008 |
| 7329998 |
Lighting system including photonic emission and detection using light-emitting elements |
Feb. 12, 2008 |
| 7329997 |
System including an electronic ballast for use with a spa |
Feb. 12, 2008 |
| 7329996 |
Sine wave light-adjusting apparatus |
Feb. 12, 2008 |
| 7329994 |
Lighting system for vehicle |
Feb. 12, 2008 |
| 7327102 |
Portable fluorescent task lamp |
Feb. 5, 2008 |
| 7327100 |
Discharge lamp lighting apparatus |
Feb. 5, 2008 |
| 7327098 |
LED controller and control method thereof |
Feb. 5, 2008 |
| 7327097 |
Light module with control of luminance and method for managing the luminance |
Feb. 5, 2008 |
| 7327096 |
Electrode temperature differential operation of a discharge lamp |
Feb. 5, 2008 |
| 7327095 |
Discharge lamp lighting apparatus |
Feb. 5, 2008 |
| 7327092 |
Current driving circuit for inductive loads |
Feb. 5, 2008 |
| 7323831 |
Illumination device |
Jan. 29, 2008 |
| 7323830 |
Lighting arrangement having a fluorescent lamp, particularly a cold cathode lamp |
Jan. 29, 2008 |
| 7323829 |
Minimizing bond wire power losses in integrated circuit full bridge CCFL drivers |
Jan. 29, 2008 |
| 7323828 |
LED current bias control using a step down regulator |
Jan. 29, 2008 |
| 7323827 |
Ripple reduction method for electronic ballasts |
Jan. 29, 2008 |
| 7321350 |
Image display |
Jan. 22, 2008 |
| 7321206 |
LED driving apparatus |
Jan. 22, 2008 |
| 7321205 |
Method and a controller to control power supply to a CCFL |
Jan. 22, 2008 |
| 7321203 |
LED dimming control technique for increasing the maximum PWM dimming ratio and avoiding LED flicker |
Jan. 22, 2008 |
| 7321201 |
Basic halogen convertor IC |
Jan. 22, 2008 |
| 7321200 |
Square wave drive system |
Jan. 22, 2008 |
| 7321199 |
Display apparatus and control method thereof |
Jan. 22, 2008 |
| 7319446 |
Organic electroluminescent display device and driving method thereof |
Jan. 15, 2008 |
| 7319297 |
Balanced current lamp module and multi-lamp circuit |
Jan. 15, 2008 |
| 7319296 |
Device for driving lamps |
Jan. 15, 2008 |
| 7317289 |
Method and apparatus for controlling driving current of illumination source in a display system |
Jan. 8, 2008 |
| 7317288 |
Controlling method and system for LED-based backlighting source |
Jan. 8, 2008 |
| 7317287 |
Circuit for an LED array |
Jan. 8, 2008 |
| 7317286 |
Power supply apparatus for discharge lamp and control method for the same |
Jan. 8, 2008 |
| 7316483 |
Method of representing a video image by means of a projector |
Jan. 8, 2008 |
| 7315139 |
Light source having more than three LEDs in which the color points are maintained using a three channel color sensor |
Jan. 1, 2008 |
| 7315138 |
Cold cathode fluorescent discharge lamp apparatus and operating method for same |
Jan. 1, 2008 |
| 7315137 |
Method and apparatus for a CCFL driving device |
Jan. 1, 2008 |
| 7315136 |
Protection apparatus and multi-lamp driving system using the same |
Jan. 1, 2008 |
| 7315134 |
Power supply for a high voltage device |
Jan. 1, 2008 |
| 7312780 |
Fluorescent lamp driver system |
Dec. 25, 2007 |
| 7312588 |
Ballast with frequency-diagnostic lamp fault protection circuit |
Dec. 25, 2007 |
| 7312587 |
Control device for high intensity discharge bulb and method of controlling high intensity discharge bulb |
Dec. 25, 2007 |
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