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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 |
| 7462996 |
Method of operating a lamp with a power controller having current limited RMS regulated output |
Dec. 9, 2008 |
| 7462993 |
Dome light |
Dec. 9, 2008 |
| 7462992 |
Starter circuit having regulated starter voltage |
Dec. 9, 2008 |
| 7459867 |
Program start ballast |
Dec. 2, 2008 |
| 7459864 |
Power control methods and apparatus |
Dec. 2, 2008 |
| 7459862 |
High efficiency electronic ballast for metal halide lamp |
Dec. 2, 2008 |
| 7456819 |
Lamp driving device, backlight assembly and liquid crystal display apparatus having the same |
Nov. 25, 2008 |
| 7456589 |
Light output modulation for data transmission |
Nov. 25, 2008 |
| 7456587 |
Digital controlled light source driving apparatus |
Nov. 25, 2008 |
| 7456583 |
Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp |
Nov. 25, 2008 |
| 7456581 |
Power supply, backlight apparatus, and display device |
Nov. 25, 2008 |
| 7449845 |
Backlight assembly and display apparatus having the same |
Nov. 11, 2008 |
| 7449844 |
Digital power controller for gas discharge devices and the like |
Nov. 11, 2008 |
| 7449840 |
Ignitor turn-off switch for HID ballasts |
Nov. 11, 2008 |
| 7446489 |
Apparatus and method of driving light source for display device |
Nov. 4, 2008 |
| 7446488 |
Metal halide lamp ballast controlled by remote enable switched bias supply |
Nov. 4, 2008 |
| 7446487 |
Dimming mode selecting circuit and driving device using the same |
Nov. 4, 2008 |
| 7446483 |
Backlight light source drive device |
Nov. 4, 2008 |
| 7446481 |
Display device and control method thereof |
Nov. 4, 2008 |
| 7443701 |
Double-ended converter |
Oct. 28, 2008 |
| 7443112 |
Current balancing circuit for a multi-lamp system |
Oct. 28, 2008 |
| 7443110 |
Discharge lamp energizing circuit and method of energizing discharge lamp |
Oct. 28, 2008 |
| 7443105 |
Ballast circuit for gas discharge lamps |
Oct. 28, 2008 |
| 7439689 |
Lamp driving device having impedance component detecting abnormal discharge |
Oct. 21, 2008 |
| 7439688 |
Discharge lamp lighting circuit with power control |
Oct. 21, 2008 |
| 7436131 |
Thermal protection for lamp ballasts |
Oct. 14, 2008 |
| 7436130 |
Cold-cathode tube lighting device for use in a plurality of cold-cathode tubes lit by two low-impedance power sources |
Oct. 14, 2008 |
| 7436129 |
Triple-loop fluorescent lamp driver |
Oct. 14, 2008 |
| 7436128 |
Driving circuit for hot cathode fluorescent lamps |
Oct. 14, 2008 |
| 7436126 |
Resonant ballast circuit |
Oct. 14, 2008 |
| 7436125 |
Light emitting diode drive circuit |
Oct. 14, 2008 |
| 7432670 |
Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device |
Oct. 7, 2008 |
| 7432667 |
Projector lamp control for increased lamp life |
Oct. 7, 2008 |
| 7432666 |
Cold cathode fluorescent lamp driving system |
Oct. 7, 2008 |
| 7429835 |
Backlight module driver circuit |
Sep. 30, 2008 |
| 7429834 |
Multi-lamp driver with active current regulator |
Sep. 30, 2008 |
| 7429833 |
Power-saving and stabilizing ballast |
Sep. 30, 2008 |
| 7429832 |
Light control fluorescent lamp and circuit thereof |
Sep. 30, 2008 |
| 7429830 |
Power control of a fluorescent lamp |
Sep. 30, 2008 |
| 7423388 |
Fixed lamp frequency synchronization with the resonant tank for discharge lamps |
Sep. 9, 2008 |
| 7423386 |
Power supply circuits and methods for supplying stable power to control circuitry in an electronic ballast |
Sep. 9, 2008 |
| 7420335 |
Switched constant current driving and control circuit |
Sep. 2, 2008 |
| 7420334 |
Electronic ballast for a lamp |
Sep. 2, 2008 |
| 7420333 |
Mixed mode control for dimmable fluorescent lamp |
Sep. 2, 2008 |
| 7418392 |
System and method for controlling the operation of a device by voice commands |
Aug. 26, 2008 |
| 7417383 |
Apparatus and method of driving lamp of liquid crystal display device |
Aug. 26, 2008 |
| 7417382 |
High-efficiency adaptive DC/AC converter |
Aug. 26, 2008 |
| 7417381 |
Discharge lamp lighting circuit |
Aug. 26, 2008 |
| 7414373 |
Discharge lamp driving circuit and method of driving a discharge lamp |
Aug. 19, 2008 |
| 7414372 |
Dimming ballast control circuit |
Aug. 19, 2008 |
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