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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 |
| 6998791 |
Discharge power supply apparatus |
Feb. 14, 2006 |
| 6998792 |
Electrodeless discharge lamp lighting device, light bulb type electrodeless fluorescent lamp and discharge lamp lighting device |
Feb. 14, 2006 |
| 6998794 |
Device and method for driving organic EL display |
Feb. 14, 2006 |
| 6998795 |
Power factor correction circuit for electronic ballast |
Feb. 14, 2006 |
| 6998797 |
Device and method for adjusting currents of lamp tubes |
Feb. 14, 2006 |
| 6995518 |
System, apparatus, and method for driving light emitting diodes in low voltage circuits |
Feb. 7, 2006 |
| 6995519 |
OLED display with aging compensation |
Feb. 7, 2006 |
| 6995523 |
Discharge lamp lighting device |
Feb. 7, 2006 |
| 6989638 |
Discharge lamp lighting circuit |
Jan. 24, 2006 |
| 6989807 |
LED driving device |
Jan. 24, 2006 |
| 6987366 |
Step down circuit for an LED flashlight |
Jan. 17, 2006 |
| 6984943 |
Method and apparatus for lighting high pressure discharge lamp, high pressure discharge lamp apparatus, and projection-type image display apparatus |
Jan. 10, 2006 |
| 6982527 |
Method for driving light emitting diode |
Jan. 3, 2006 |
| 6982528 |
Thermal protection for lamp ballasts |
Jan. 3, 2006 |
| 6979955 |
Deriving power for a wireless network component from the power source of a fluorescent light |
Dec. 27, 2005 |
| 6979959 |
Apparatus and method for striking a fluorescent lamp |
Dec. 27, 2005 |
| 6979960 |
Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the same |
Dec. 27, 2005 |
| 6977471 |
Electroluminescent device |
Dec. 20, 2005 |
| 6977472 |
Electrodeless self-ballasted fluorescent lamp and discharge lamp operating device |
Dec. 20, 2005 |
| 6975076 |
Charge pump circuit to operate control circuit |
Dec. 13, 2005 |
| 6975077 |
High intensity discharge lamp ballast apparatus |
Dec. 13, 2005 |
| 6975078 |
Dimming-control lighting apparatus for incandescent electric lamp |
Dec. 13, 2005 |
| 6975214 |
Supply unit for identifying and powering a LED unit, and method therefor |
Dec. 13, 2005 |
| 6972523 |
Metal halide lamp control device with linear control power transducer |
Dec. 6, 2005 |
| 6972526 |
Organic EL display device and driving circuits |
Dec. 6, 2005 |
| 6972530 |
Apparatus and method for transparent dynamic range scaling for open loop LED drivers |
Dec. 6, 2005 |
| 6969955 |
Method and apparatus for dimming control of electronic ballasts |
Nov. 29, 2005 |
| 6969956 |
Current control apparatus for fluorescent lamps |
Nov. 29, 2005 |
| 6969957 |
Ignition system for a high-frequency high-intensity discharge lamp system |
Nov. 29, 2005 |
| 6969958 |
Square wave drive system |
Nov. 29, 2005 |
| 6967447 |
Pre-configured light modules |
Nov. 22, 2005 |
| 6967978 |
Light-emitting element driving device |
Nov. 22, 2005 |
| 6965204 |
Ballasting circuit for optimizing the current in the take-over/warm-up phase |
Nov. 15, 2005 |
| 6965237 |
Device for scanning or detecting electromagnetic waves |
Nov. 15, 2005 |
| 6965307 |
Sign sentry |
Nov. 15, 2005 |
| 6963170 |
Lamp monitor and lamp |
Nov. 8, 2005 |
| 6963175 |
Illumination control system |
Nov. 8, 2005 |
| 6963176 |
Discharge lamp operation apparatus |
Nov. 8, 2005 |
| 6963177 |
Open circuit detection for vehicular lamp |
Nov. 8, 2005 |
| 6963178 |
Apparatus for controlling operation of gas discharge devices |
Nov. 8, 2005 |
| 6963179 |
Frequency synchronization device for LCD lamps |
Nov. 8, 2005 |
| 6960884 |
Device for operating a short arc discharge mercury lamp |
Nov. 1, 2005 |
| 6960890 |
Electroluminescent display device |
Nov. 1, 2005 |
| 6960891 |
Direct-type back light device |
Nov. 1, 2005 |
| 6958580 |
Electronic ballast for a high intensity discharge lamp |
Oct. 25, 2005 |
| 6958581 |
High-intensity discharge lamp operating device and method for controlling the high-intensity discharge lamp |
Oct. 25, 2005 |
| 6958582 |
Lamp current control circuit |
Oct. 25, 2005 |
| 6958583 |
AC voltage control circuit |
Oct. 25, 2005 |
| 6958584 |
Lamp driving apparatus and method for driving lamp |
Oct. 25, 2005 |
| 6956336 |
Single chip ballast control with power factor correction |
Oct. 18, 2005 |
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