| |
 |
|
Class Information
Number: 315/302
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Current generator control
Description: Systems wherein regulation is secured by varying some characteristic of the current or voltage generator, or by varying the number of generators used to supply the current or voltage, so as to vary the current or voltage output of the generating means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7541748 |
Discharge lamp lighting device |
Jun. 2, 2009 |
| 7518320 |
LED control circuit capable of automatically controlling brightness of LEDs according to ambient light conditions |
Apr. 14, 2009 |
| 7489089 |
Color control system for color changing lights |
Feb. 10, 2009 |
| 7323825 |
Ballast integrated circuit (IC) |
Jan. 29, 2008 |
| 7317287 |
Circuit for an LED array |
Jan. 8, 2008 |
| 7122974 |
Light quantity adjusting method, light quantity adjusting apparatus, and image forming apparatus |
Oct. 17, 2006 |
| 7122971 |
Driver circuit for driving a plurality of DC lamp strings |
Oct. 17, 2006 |
| 6995523 |
Discharge lamp lighting device |
Feb. 7, 2006 |
| 6949891 |
Light quantity adjusting method, light quantity adjusting apparatus, and image forming apparatus |
Sep. 27, 2005 |
| 6803732 |
LED array and LED module with chains of LEDs connected in parallel |
Oct. 12, 2004 |
| 6593709 |
Dual mode electronic dimmer |
Jul. 15, 2003 |
| 6515437 |
Power supply for hybrid illumination system |
Feb. 4, 2003 |
| 6495973 |
Lighting control system and method |
Dec. 17, 2002 |
| 6459919 |
Precision illumination methods and systems |
Oct. 1, 2002 |
| 6433488 |
OLED active driving system with current feedback |
Aug. 13, 2002 |
| 6369525 |
White light-emitting-diode lamp driver based on multiple output converter with output current mode control |
Apr. 9, 2002 |
| 6274986 |
Method and apparatus for driving a discharge lamp with pulses that terminate prior to the discharge reaching a steady state |
Aug. 14, 2001 |
| 6160360 |
Power control with reduced radio frequency interference |
Dec. 12, 2000 |
| 6069451 |
Analog to pulse width converter for field emission displays |
May. 30, 2000 |
| 5973455 |
Electronic ballast with filament cut-out |
Oct. 26, 1999 |
| 5949190 |
Internal combustion engine-driven discharge lamp lighting apparatus |
Sep. 7, 1999 |
| 5793164 |
Low intensity aircraft rotor tip illumination |
Aug. 11, 1998 |
| 5684368 |
Smart driver for an array of LEDs |
Nov. 4, 1997 |
| 5680016 |
Transformerless electronic ballast for gaseous discharge lamps |
Oct. 21, 1997 |
| 5592052 |
Variable color temperature fluorescent lamp |
Jan. 7, 1997 |
| 5424618 |
Arrangements for reducing interference from a dimming system, and dimmer therefor |
Jun. 13, 1995 |
| 5357170 |
Lighting control system with priority override |
Oct. 18, 1994 |
| 4605301 |
Exposure method of semiconductor wafer by mercury-vapor lamp |
Aug. 12, 1986 |
| 4546290 |
Ballast circuits for discharge lamp |
Oct. 8, 1985 |
| 4010487 |
Semiconductor arrangement |
Mar. 1, 1977 |
|
|
|
