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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 |
| 7518715 |
Method for determination of efficient lighting use |
Apr. 14, 2009 |
| 7518525 |
Light emitting diode and display device using the same |
Apr. 14, 2009 |
| 7518320 |
LED control circuit capable of automatically controlling brightness of LEDs according to ambient light conditions |
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 |
| 7515128 |
Methods and apparatus for providing luminance compensation |
Apr. 7, 2009 |
| 7514882 |
Lamp driving device and method |
Apr. 7, 2009 |
| 7514881 |
Discharge lamp lighting apparatus |
Apr. 7, 2009 |
| 7514880 |
Lighting apparatus for projector |
Apr. 7, 2009 |
| 7514879 |
Method and system for driving a plasma-based light source |
Apr. 7, 2009 |
| 7514877 |
Display panel driving circuit |
Apr. 7, 2009 |
| 7511628 |
Status indicator circuit for a dimmer switch |
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 |
| 7511432 |
Discharge lamp lighting device, illumination device, and projector |
Mar. 31, 2009 |
| 7508144 |
Light source device, lighting and driving method thereof and projector |
Mar. 24, 2009 |
| 7508143 |
Driving apparatus and method for driving light emitting elements, and projector |
Mar. 24, 2009 |
| 7504781 |
Method for driving a LED based lighting device |
Mar. 17, 2009 |
| 7501774 |
Multi-button low voltage switch adaptable for three states |
Mar. 10, 2009 |
| 7501768 |
Equipment and methods for emergency lighting that provides brownout detection and protection |
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 |
| 7498753 |
Color-compensating Fluorescent-LED hybrid lighting |
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 |
| 7498749 |
Intelligent electrical switching device including a touch sensor user interface switch |
Mar. 3, 2009 |
| 7495398 |
Discharge lamp lighting apparatus |
Feb. 24, 2009 |
| 7492109 |
Apparatus for controlling lamp source and electric equipment and power socket therof |
Feb. 17, 2009 |
| 7492108 |
System and method for driving light-emitting diodes (LEDs) |
Feb. 17, 2009 |
| 7489090 |
Electronic ballast having adaptive frequency shifting |
Feb. 10, 2009 |
| 7489089 |
Color control system for color changing lights |
Feb. 10, 2009 |
| 7489088 |
Power supply for 2-line dimmer |
Feb. 10, 2009 |
| 7486032 |
Apparatus for driving LED arrays |
Feb. 3, 2009 |
| 7486031 |
Symmetric cancelling anti-striation circuit |
Feb. 3, 2009 |
| 7486030 |
Universal input voltage device |
Feb. 3, 2009 |
| 7486029 |
Circuit for detecting end of life of fluorescent lamp |
Feb. 3, 2009 |
| 7486028 |
Circuit arrangement |
Feb. 3, 2009 |
| 7482765 |
Lighting control apparatus of lighting device for vehicle |
Jan. 27, 2009 |
| 7482764 |
Light sources for illumination of liquids |
Jan. 27, 2009 |
| 7482763 |
Non-PWM vehicle lamp dimming arrangement |
Jan. 27, 2009 |
| 7482762 |
Discharge lamp ballast with detection of abnormal discharge outside the arc tube |
Jan. 27, 2009 |
| 7482760 |
Method and apparatus for scaling the average current supply to light-emitting elements |
Jan. 27, 2009 |
| 7479743 |
Vehicle lighting apparatus |
Jan. 20, 2009 |
| 7479742 |
Discharge lamp lighting circuit |
Jan. 20, 2009 |
| 7479741 |
Method and device for supplying power to LEDs |
Jan. 20, 2009 |
| 7479740 |
Module for parallel lighting and balancer coil for discharge lamp |
Jan. 20, 2009 |
| 7479738 |
Drive circuit for light emitting diode |
Jan. 20, 2009 |
| 7477025 |
Power control circuit for adjusting light |
Jan. 13, 2009 |
| 7477023 |
Inverter circuit and backlight assembly having the same |
Jan. 13, 2009 |
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