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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 |
| 7365497 |
Discharge lamp ignition device and projector |
Apr. 29, 2008 |
| 7365498 |
Electrodeless discharge lamp lighting device and luminaire |
Apr. 29, 2008 |
| 7358712 |
Power supply control circuit and control method thereof |
Apr. 15, 2008 |
| 7358689 |
Phase-control power controller for converting a line voltage to a RMS load voltage |
Apr. 15, 2008 |
| 7358681 |
Switched constant current driving and control circuit |
Apr. 15, 2008 |
| 7355356 |
Circuit arrangement and method for detecting a crest factor of a lamp current or a lamp operating voltage of an electric lamp |
Apr. 8, 2008 |
| 7339332 |
Chroma compensated backlit display |
Mar. 4, 2008 |
| 7336042 |
Display apparatus employing a field emission device and brightness control device and method therefor |
Feb. 26, 2008 |
| 7336040 |
Single-channel comprehensive protection circuit |
Feb. 26, 2008 |
| 7336037 |
Intelligent electrical switching device |
Feb. 26, 2008 |
| 7332868 |
Discharge lamp lighting device |
Feb. 19, 2008 |
| 7327051 |
Lighting control circuit for vehicle lamps |
Feb. 5, 2008 |
| 7327096 |
Electrode temperature differential operation of a discharge lamp |
Feb. 5, 2008 |
| 7323825 |
Ballast integrated circuit (IC) |
Jan. 29, 2008 |
| 7323832 |
Inverter with dimming function |
Jan. 29, 2008 |
| 7321206 |
LED driving apparatus |
Jan. 22, 2008 |
| 7319298 |
Digitally controlled luminaire system |
Jan. 15, 2008 |
| 7317289 |
Method and apparatus for controlling driving current of illumination source in a display system |
Jan. 8, 2008 |
| 7315132 |
Apparatus for driving lamp of liquid crystal display device |
Jan. 1, 2008 |
| 7315133 |
Discharge lamp lighting apparatus |
Jan. 1, 2008 |
| 7315135 |
Load driving device and load driving method |
Jan. 1, 2008 |
| 7315137 |
Method and apparatus for a CCFL driving device |
Jan. 1, 2008 |
| 7312586 |
Ballast power supply |
Dec. 25, 2007 |
| 7312589 |
Driver control circuit and method for cold cathode fluorescent lamp |
Dec. 25, 2007 |
| 7312583 |
Apparatus and method for driving a lamp unit, and liquid crystal display device using the same |
Dec. 25, 2007 |
| 7307386 |
Process for operating a discharge lamp |
Dec. 11, 2007 |
| 7301289 |
Discharge lamp lighting control device |
Nov. 27, 2007 |
| 7301291 |
Power controller having current limited RMS regulated output |
Nov. 27, 2007 |
| 7298099 |
PFC and ballast control IC |
Nov. 20, 2007 |
| 7295180 |
Backlight driving device, backlight driving method, and liquid crystal display device |
Nov. 13, 2007 |
| 7291986 |
Step sinusoidal voltage controlling method for hid, flourescent and incandescent light dimming applications |
Nov. 6, 2007 |
| 7288898 |
Automotive high intensity discharge lamp ballast circuit |
Oct. 30, 2007 |
| 7285922 |
Driving apparatus for CCFL |
Oct. 23, 2007 |
| 7285924 |
Driving circuit for LCD backlight lamps |
Oct. 23, 2007 |
| 7285925 |
Backlight module control circuit of multi-lamp display device |
Oct. 23, 2007 |
| 7282870 |
Driving apparatus for CCFL |
Oct. 16, 2007 |
| 7282872 |
Discharge lamp lighting circuit |
Oct. 16, 2007 |
| 7279849 |
Apparatus for driving backlight of liquid crystal display |
Oct. 9, 2007 |
| 7276861 |
System and method for driving LED |
Oct. 2, 2007 |
| 7276864 |
Discharge lamp lighting device and projection type image display apparatus having the same |
Oct. 2, 2007 |
| 7276863 |
LED array driving apparatus and backlight driving apparatus using the same |
Oct. 2, 2007 |
| 7274155 |
Flash lamp drive circuit |
Sep. 25, 2007 |
| 7271544 |
Lighting apparatus for illumination light source |
Sep. 18, 2007 |
| 7268497 |
Lighting device with night light and human body sensing capability |
Sep. 11, 2007 |
| 7265504 |
High efficiency power supply for LED lighting applications |
Sep. 4, 2007 |
| 7265502 |
Dimming apparatus of light emitting unit |
Sep. 4, 2007 |
| 7265503 |
Applications of halogen convertor control IC |
Sep. 4, 2007 |
| 7262562 |
Method for driving a fluorescent lamp and an inverter circuit for performing such a method |
Aug. 28, 2007 |
| 7259526 |
Method and apparatus for controlling driving current of illumination source in a display system |
Aug. 21, 2007 |
| 7259525 |
High efficiency switching LED driver |
Aug. 21, 2007 |
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