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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 |
| 6954039 |
Driving circuit for light emitting diodes |
Oct. 11, 2005 |
| 6949886 |
Dynamic displays |
Sep. 27, 2005 |
| 6949888 |
Dimming ballast control IC with flash suppression circuit |
Sep. 27, 2005 |
| 6946807 |
Lamp lighting apparatus for a discharge lamp |
Sep. 20, 2005 |
| 6943502 |
Electronic ballast for a discharge lamp |
Sep. 13, 2005 |
| 6943785 |
Piezoelectric transformation driving apparatus |
Sep. 13, 2005 |
| 6940234 |
Electric arc discharge protection device |
Sep. 6, 2005 |
| 6936976 |
Circuit arrangement and method for starting and operating gas discharge lamps with heatable electrode filaments |
Aug. 30, 2005 |
| 6936979 |
Frequency-modulated dimming control system of discharge lamp |
Aug. 30, 2005 |
| 6933681 |
Circuit arrangement and method for starting and operating discharge lamps |
Aug. 23, 2005 |
| 6933682 |
Method for operating fluorescent lamps and ballast |
Aug. 23, 2005 |
| 6930452 |
Circuit arrangement |
Aug. 16, 2005 |
| 6930453 |
Power supply device for energizing discharge lamp |
Aug. 16, 2005 |
| 6924604 |
Method of operating a discharge lamp system and a discharge lamp system using a combination radial and longitudinal acoustic mode to reduce vertical segregation |
Aug. 2, 2005 |
| 6924606 |
Low-visual noise, jitterized pulse width modulation brightness control circuit |
Aug. 2, 2005 |
| 6924607 |
Method and apparatus for automatically shutting off a microscope |
Aug. 2, 2005 |
| 6922023 |
Multiple-lamp backlight inverter |
Jul. 26, 2005 |
| 6919692 |
Control device of gas-discharge light source |
Jul. 19, 2005 |
| 6919694 |
Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
Jul. 19, 2005 |
| 6919695 |
Overvoltage protection for hid lamp ballast |
Jul. 19, 2005 |
| 6919696 |
Device for operating a high-pressure discharge lamp |
Jul. 19, 2005 |
| 6917164 |
Light signaling device related to the operating state of a system |
Jul. 12, 2005 |
| 6917166 |
Vehicular lamp |
Jul. 12, 2005 |
| 6914394 |
Supply circuit, in particular for a discharge lamp |
Jul. 5, 2005 |
| 6911790 |
Multiplexed high voltage DC-AC driver |
Jun. 28, 2005 |
| 6909238 |
Back-lighted control and protection device for multi-lamp LCD |
Jun. 21, 2005 |
| 6909245 |
Ballast circuit for control of lamp power |
Jun. 21, 2005 |
| 6909246 |
Electronic ballast and electronic transformer |
Jun. 21, 2005 |
| 6909249 |
Switching constant-current power supply |
Jun. 21, 2005 |
| 6909250 |
Apparatus and method for operating a portable xenon arc searchlight |
Jun. 21, 2005 |
| 6906477 |
Linear control device for controlling a resistive and/or an inductive and/or a capacitive load |
Jun. 14, 2005 |
| 6899434 |
Projector and power supply device |
May. 31, 2005 |
| 6900993 |
Inverter controller |
May. 31, 2005 |
| 6897622 |
Incremental color blending illumination system using LEDs |
May. 24, 2005 |
| 6894441 |
Method and apparatus for detecting remaining lamp lifetime |
May. 17, 2005 |
| 6894442 |
Luminary control system |
May. 17, 2005 |
| 6891336 |
High pressure discharge lamp lighting apparatus and luminaire using thereof |
May. 10, 2005 |
| 6891337 |
Lighting system |
May. 10, 2005 |
| 6891338 |
Projector, lamp lighting circuit and lamp lighting control method |
May. 10, 2005 |
| 6888321 |
Device for operating a high pressure discharge lamp |
May. 3, 2005 |
| 6888323 |
Light management system device and method |
May. 3, 2005 |
| 6888324 |
Ozone generator having a mercury lamp with a filament temperature detective circuit |
May. 3, 2005 |
| 6889174 |
Remotely controllable distributed device monitoring unit and system |
May. 3, 2005 |
| 6882119 |
Lamp with multiple light-producing elements |
Apr. 19, 2005 |
| 6879114 |
Fluorescent lamp driver circuit |
Apr. 12, 2005 |
| 6876153 |
Switching regulator circuit and vehicular lamp |
Apr. 5, 2005 |
| 6876157 |
Lamp inverter with pre-regulator |
Apr. 5, 2005 |
| 6876159 |
Electronic ballast system for emergency lighting applications |
Apr. 5, 2005 |
| 6873121 |
Fluorescent ballast with unique dimming control |
Mar. 29, 2005 |
| 6870325 |
Led drive circuit and method |
Mar. 22, 2005 |
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