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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 |
| 7084585 |
Discharge lamp lighting apparatus |
Aug. 1, 2006 |
| 7081717 |
Discharge lamp lighting apparatus for lighting multiple discharge lamps |
Jul. 25, 2006 |
| 7081721 |
Projection type video display apparatus |
Jul. 25, 2006 |
| 7077530 |
Projector of external power supply |
Jul. 18, 2006 |
| 7078870 |
Simplified topology for HID lamps |
Jul. 18, 2006 |
| 7075254 |
Lighting ballast having boost converter with on/off control and method of ballast operation |
Jul. 11, 2006 |
| 7071625 |
LED illuminator with capability of stable brightness |
Jul. 4, 2006 |
| 7067993 |
Light source control system |
Jun. 27, 2006 |
| 7067994 |
Electronic ballast with overvoltage monitoring |
Jun. 27, 2006 |
| 7067992 |
Power controls for tube mounted LEDs with ballast |
Jun. 27, 2006 |
| 7061189 |
Electronic ballast |
Jun. 13, 2006 |
| 7061781 |
Circuit arrangement for operating light sources |
Jun. 13, 2006 |
| 7061191 |
System and method for reducing flicker of compact gas discharge lamps at low lamp light output level |
Jun. 13, 2006 |
| 7057356 |
High intensity discharge lamp with boost circuit |
Jun. 6, 2006 |
| 7045967 |
Multi-lamp actuating facility |
May. 16, 2006 |
| 7045974 |
LED optical energy detection and feedback system |
May. 16, 2006 |
| 7038401 |
Operating device and method for operating gas discharge lamps |
May. 2, 2006 |
| 7034607 |
Switching constant-current power device |
Apr. 25, 2006 |
| 7034473 |
Phase-control power controller for converting a line voltage to an RMS load voltage |
Apr. 25, 2006 |
| 7034472 |
Power supply apparatus for traveling-wave tube which eliminates high voltage relay |
Apr. 25, 2006 |
| 7034471 |
Cold-cathode tube operating apparatus |
Apr. 25, 2006 |
| 7034469 |
Phase-control power controller with analog RMS load voltage regulation |
Apr. 25, 2006 |
| 7030567 |
Phase-control power controller with digital RMS load voltage regulation |
Apr. 18, 2006 |
| 7023146 |
Discharge lamp lighting apparatus |
Apr. 4, 2006 |
| 7019470 |
Discharge lamp lighting device |
Mar. 28, 2006 |
| 7002305 |
Electronic ballast for a discharge lamp |
Feb. 21, 2006 |
| 6998793 |
Inverter for providing power to lamp circuit |
Feb. 14, 2006 |
| 6998796 |
Fluorescent lamp ballast control circuit |
Feb. 14, 2006 |
| 6995522 |
Phase controller |
Feb. 7, 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 |
| 6979085 |
Image projector and method of operating same |
Dec. 27, 2005 |
| 6979957 |
Apparatus for driving lamp of liquid crystal display device |
Dec. 27, 2005 |
| 6967449 |
Discharge lamp lighting apparatus |
Nov. 22, 2005 |
| 6967446 |
High pressure discharge lamp lighting apparatus and high pressure discharge lamp lighting method |
Nov. 22, 2005 |
| 6963170 |
Lamp monitor and lamp |
Nov. 8, 2005 |
| 6963176 |
Discharge lamp operation apparatus |
Nov. 8, 2005 |
| 6949892 |
Light emitting element drive device and electronic device light emitting element |
Sep. 27, 2005 |
| 6949888 |
Dimming ballast control IC with flash suppression circuit |
Sep. 27, 2005 |
| 6943503 |
Lighting method and apparatus for lighting a high pressure discharge lamp and high pressure discharge lamp apparatus with reduced load |
Sep. 13, 2005 |
| 6933681 |
Circuit arrangement and method for starting and operating discharge lamps |
Aug. 23, 2005 |
| 6930454 |
Method for operating at least one low-pressure discharge lamp and operating device for at least one low-pressure discharge lamp |
Aug. 16, 2005 |
| 6930452 |
Circuit arrangement |
Aug. 16, 2005 |
| 6930453 |
Power supply device for energizing discharge lamp |
Aug. 16, 2005 |
| 6917164 |
Light signaling device related to the operating state of a system |
Jul. 12, 2005 |
| 6914395 |
Electronic ballast for a high-pressure discharge lamp |
Jul. 5, 2005 |
| 6911786 |
CCFL circuit with independent adjustment of frequency and duty cycle |
Jun. 28, 2005 |
| 6911787 |
Driving method and driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel |
Jun. 28, 2005 |
| 6909239 |
Dual LED/incandescent security fixture |
Jun. 21, 2005 |
| 6888323 |
Light management system device and method |
May. 3, 2005 |
| 6879112 |
Image display device and method of displaying images with static image detection |
Apr. 12, 2005 |
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