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Class Information
Number: 315/307
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation
Description: Systems wherein the regulation of the current or potential supplied to the load device is automatically controlled in response to some condition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7518525 |
Light emitting diode and display device using the same |
Apr. 14, 2009 |
| 7518321 |
Luminance adjusting device |
Apr. 14, 2009 |
| 7518319 |
LED lighting device and LCD device using the same |
Apr. 14, 2009 |
| 7518318 |
Circuit for a gas-discharge lamp |
Apr. 14, 2009 |
| 7518317 |
Backlight driving and control circuit with an isolated power factor correction structure |
Apr. 14, 2009 |
| 7515446 |
High-efficiency adaptive DC/AC converter |
Apr. 7, 2009 |
| 7515445 |
High-efficiency adaptive DC/AC converter |
Apr. 7, 2009 |
| 7514883 |
Illuminating device for imaging apparatus |
Apr. 7, 2009 |
| 7514882 |
Lamp driving device and method |
Apr. 7, 2009 |
| 7514878 |
High frequency electronic ballast with sine wave oscillator |
Apr. 7, 2009 |
| 7511437 |
Methods and apparatus for high power factor controlled power delivery using a single switching stage per load |
Mar. 31, 2009 |
| 7511436 |
Current control method and circuit for light emitting diodes |
Mar. 31, 2009 |
| 7511435 |
Backlight unit and liquid crystal display device having the same |
Mar. 31, 2009 |
| 7511434 |
Lamp driving apparatus, liquid crystal display comprising the same, and driving method thereof |
Mar. 31, 2009 |
| 7511433 |
Discharge lamp lighting device and projector |
Mar. 31, 2009 |
| 7510300 |
Light emitting device and display apparatus and read apparatus using the light emitting device |
Mar. 31, 2009 |
| 7508144 |
Light source device, lighting and driving method thereof and projector |
Mar. 24, 2009 |
| 7508142 |
Ballast control circuit for use with CCFL and EEFL lamps |
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 |
| 7501747 |
Integrated circuit optical signal emitters |
Mar. 10, 2009 |
| 7499261 |
Load control device having a split enclosure |
Mar. 3, 2009 |
| 7498754 |
Architecture for driving multiple loads at constant current |
Mar. 3, 2009 |
| 7498752 |
Driving method of external electrode fluorescent lamp inverter for backlight |
Mar. 3, 2009 |
| 7498751 |
High efficiency and low cost cold cathode fluorescent lamp driving apparatus for LCD backlight |
Mar. 3, 2009 |
| 7498750 |
Gas discharge lamp driving circuit and method with resonating sweep voltage |
Mar. 3, 2009 |
| 7498748 |
Method and apparatus for providing power in an electrical system |
Mar. 3, 2009 |
| 7495398 |
Discharge lamp lighting apparatus |
Feb. 24, 2009 |
| 7492108 |
System and method for driving light-emitting diodes (LEDs) |
Feb. 17, 2009 |
| 7492107 |
Device for driving light source module |
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 |
| 7482765 |
Lighting control apparatus of lighting device for vehicle |
Jan. 27, 2009 |
| 7482762 |
Discharge lamp ballast with detection of abnormal discharge outside the arc tube |
Jan. 27, 2009 |
| 7479744 |
Power dimmer |
Jan. 20, 2009 |
| 7479743 |
Vehicle lighting apparatus |
Jan. 20, 2009 |
| 7479742 |
Discharge lamp lighting circuit |
Jan. 20, 2009 |
| 7479738 |
Drive circuit for light emitting diode |
Jan. 20, 2009 |
| 7477025 |
Power control circuit for adjusting light |
Jan. 13, 2009 |
| 7477024 |
Sequential burst mode activation circuit |
Jan. 13, 2009 |
| 7474064 |
Lamp driving circuit for a discharge lamp and a control method thereof |
Jan. 6, 2009 |
| 7474063 |
Anti-cycling control system for luminaires |
Jan. 6, 2009 |
| 7474062 |
Decoupling circuits |
Jan. 6, 2009 |
| 7474059 |
Fluorescent ballast with fiber optic and IR control |
Jan. 6, 2009 |
| 7468586 |
Ballast with arc protection circuit |
Dec. 23, 2008 |
| 7466302 |
Display apparatus and method of driving the same |
Dec. 16, 2008 |
| 7466084 |
Digital interface with potentiometer |
Dec. 16, 2008 |
| 7466082 |
Electronic circuit reducing and boosting voltage for controlling LED current |
Dec. 16, 2008 |
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