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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 |
| 7492108 |
System and method for driving light-emitting diodes (LEDs) |
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 |
| 7482763 |
Non-PWM vehicle lamp dimming arrangement |
Jan. 27, 2009 |
| 7469940 |
Discharge lamp lighting device, lighting system and method |
Dec. 30, 2008 |
| 7471287 |
Light source driving circuit for driving light emitting diode components and driving method thereof |
Dec. 30, 2008 |
| 7462995 |
Transistorized, voltage-controlled dimming circuit |
Dec. 9, 2008 |
| 7462996 |
Method of operating a lamp with a power controller having current limited RMS regulated output |
Dec. 9, 2008 |
| 7459865 |
Cold cathode tube lighting device, tube current detecting circuit used in cold cathode tube lighting device, tube current controlling method and integrated circuit |
Dec. 2, 2008 |
| 7456586 |
Voltage controlled light source and image presentation device using the same |
Nov. 25, 2008 |
| 7446487 |
Dimming mode selecting circuit and driving device using the same |
Nov. 4, 2008 |
| 7446488 |
Metal halide lamp ballast controlled by remote enable switched bias supply |
Nov. 4, 2008 |
| 7443111 |
Liquid crystal display backlight inverter |
Oct. 28, 2008 |
| 7443107 |
Method and apparatus for controlling a discharge lamp in a backlighted display |
Oct. 28, 2008 |
| 7443113 |
Software controlled electronic dimming ballast |
Oct. 28, 2008 |
| 7439690 |
Discharge lamp lighting apparatus and discharge lamp lighting method |
Oct. 21, 2008 |
| 7439687 |
Discharge lamp lighting circuit |
Oct. 21, 2008 |
| 7439683 |
Backlighting system for display screen |
Oct. 21, 2008 |
| 7439691 |
High pressure discharge lamp lighting device |
Oct. 21, 2008 |
| 7432667 |
Projector lamp control for increased lamp life |
Oct. 7, 2008 |
| 7425803 |
Method and circuit for driving a low voltage light emitting diode |
Sep. 16, 2008 |
| 7425804 |
Lamp drive device of projector |
Sep. 16, 2008 |
| 7423389 |
LED driving device of overvoltage protection and duty control |
Sep. 9, 2008 |
| 7420335 |
Switched constant current driving and control circuit |
Sep. 2, 2008 |
| 7420337 |
System and method for open lamp protection |
Sep. 2, 2008 |
| 7418392 |
System and method for controlling the operation of a device by voice commands |
Aug. 26, 2008 |
| 7405524 |
Light management system device and method |
Jul. 29, 2008 |
| 7400100 |
Discharge-lamp lighting apparatus and projector |
Jul. 15, 2008 |
| 7397197 |
Discharge lamp lighting circuit |
Jul. 8, 2008 |
| 7397200 |
Device for the control of fluorescent lamps in a lighting arrangement |
Jul. 8, 2008 |
| 7391162 |
Luminaire with LED(s) and method for operating the luminaire |
Jun. 24, 2008 |
| 7391163 |
Apparatus of driving light source for display device |
Jun. 24, 2008 |
| 7391172 |
Optical and temperature feedbacks to control display brightness |
Jun. 24, 2008 |
| 7391335 |
Aerospace light-emitting diode (LED)-based lights life and operation monitor compensator |
Jun. 24, 2008 |
| 7388336 |
Discharge lamp driving circuit having a signal detection circuit therein |
Jun. 17, 2008 |
| 7385361 |
Ballast for high-pressure discharge lamp and method of operating the same |
Jun. 10, 2008 |
| 7385360 |
High intensity discharge lamp control |
Jun. 10, 2008 |
| 7382101 |
Lighting system |
Jun. 3, 2008 |
| 7378807 |
Drive circuit for a fluorescent lamp with a diagnosis circuit, and method for diagnosis of a fluorescent lamp |
May. 27, 2008 |
| 7375473 |
Variable power control for OLED area illumination |
May. 20, 2008 |
| 7375474 |
Apparatus and method for driving backlight |
May. 20, 2008 |
| 7375475 |
Lamp containing power controller having current limited RMS regulated output |
May. 20, 2008 |
| 7372218 |
Open protection circuit for backlight module |
May. 13, 2008 |
| 7372214 |
Apparatus and method for driving lamp of liquid crystal display device |
May. 13, 2008 |
| 7372211 |
Cold cathode tube lighting device and driving method and integrated circuit to be used in same |
May. 13, 2008 |
| 7372217 |
Device for driving a light source module |
May. 13, 2008 |
| 7368881 |
Discharge lamp lighting apparatus and lamp system using the lighting apparatus |
May. 6, 2008 |
| 7368885 |
Lighting controller for lighting device for vehicle |
May. 6, 2008 |
| 7365497 |
Discharge lamp ignition device and projector |
Apr. 29, 2008 |
| 7365498 |
Electrodeless discharge lamp lighting device and luminaire |
Apr. 29, 2008 |
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