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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 |
| 7088055 |
High efficiency controller of a gas-filled light emitting tube |
Aug. 8, 2006 |
| 7088058 |
Image display |
Aug. 8, 2006 |
| 7088059 |
Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems |
Aug. 8, 2006 |
| 7088080 |
Power supply circuit for vacuum fluorescent display |
Aug. 8, 2006 |
| 7084578 |
System and method for preventing acoustic arc resonance in a HID lamp |
Aug. 1, 2006 |
| 7084579 |
Two light level ballast |
Aug. 1, 2006 |
| 7084580 |
Discharge lamp lighting circuit |
Aug. 1, 2006 |
| 7084582 |
Electronic ballast system having emergency lighting provisions and electronic chip |
Aug. 1, 2006 |
| 7084583 |
External electrode fluorescent lamp, back light unit using the external electrode fluorescent lamp, LCD back light equipment using the back light unit and driving device thereof |
Aug. 1, 2006 |
| 7084584 |
Low frequency inverter fed by a high frequency AC current source |
Aug. 1, 2006 |
| 7084585 |
Discharge lamp lighting apparatus |
Aug. 1, 2006 |
| 7081709 |
Method and apparatus for lighting a discharge lamp |
Jul. 25, 2006 |
| 7081720 |
Driver circuit and method for driving electroluminescent lamp to emit light at brightness set level |
Jul. 25, 2006 |
| 7081721 |
Projection type video display apparatus |
Jul. 25, 2006 |
| 7081722 |
Light emitting diode multiphase driver circuit and method |
Jul. 25, 2006 |
| 7078870 |
Simplified topology for HID lamps |
Jul. 18, 2006 |
| 7075237 |
Illumination control apparatus and failure detecting apparatus |
Jul. 11, 2006 |
| 7075245 |
Driving circuit for multiple cold cathode fluorescent lamps backlight applications |
Jul. 11, 2006 |
| 7075246 |
Discharge lamp illumination circuit |
Jul. 11, 2006 |
| 7075250 |
Three-component protective head gear powered by a rechargeable battery |
Jul. 11, 2006 |
| 7075251 |
Universal platform for phase dimming discharge lighting ballast and lamp |
Jul. 11, 2006 |
| 7075252 |
LED driver circuit |
Jul. 11, 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 |
| 7071630 |
Closed loop magnetic boost LED driver system and method |
Jul. 4, 2006 |
| 7071632 |
Discharge lamp starter |
Jul. 4, 2006 |
| 7071633 |
Burst pulse circuit for signal lights and method |
Jul. 4, 2006 |
| 7071634 |
Lighting control device having improved long fade off |
Jul. 4, 2006 |
| 7071762 |
Supply assembly for a led lighting module |
Jul. 4, 2006 |
| 7067982 |
Deriving power for an external device from a fluorescent light power source |
Jun. 27, 2006 |
| 7067986 |
Frequency controlled lighting system |
Jun. 27, 2006 |
| 7067989 |
Modularized inverter control circuit |
Jun. 27, 2006 |
| 7067991 |
Feedback sampling control circuit for lamp driving system |
Jun. 27, 2006 |
| 7067992 |
Power controls for tube mounted LEDs with ballast |
Jun. 27, 2006 |
| 7067993 |
Light source control system |
Jun. 27, 2006 |
| 7064496 |
State detection device |
Jun. 20, 2006 |
| 7064498 |
Light-emitting diode based products |
Jun. 20, 2006 |
| 7064499 |
Method for operating at least one low-pressure discharge lamp and operating device for at least one low-pressure discharge lamp |
Jun. 20, 2006 |
| 7065303 |
Efficient low power optical source driver and method and optical systems and devices using same |
Jun. 20, 2006 |
| 7061188 |
Instant start electronic ballast with universal AC input voltage |
Jun. 13, 2006 |
| 7061189 |
Electronic ballast |
Jun. 13, 2006 |
| 7061190 |
Circuit arrangement and operating device for operating lamps |
Jun. 13, 2006 |
| 7055962 |
System and method for managing projector bulb life |
Jun. 6, 2006 |
| 7057355 |
Drive circuit for operating at least one lamp in an associated load circuit |
Jun. 6, 2006 |
| 7057356 |
High intensity discharge lamp with boost circuit |
Jun. 6, 2006 |
| 7057357 |
Rapid warmup light actuator |
Jun. 6, 2006 |
| 7057358 |
Electronic ballast and operating method for a gas discharge lamp |
Jun. 6, 2006 |
| 7057359 |
Method and apparatus for controlling driving current of illumination source in a display system |
Jun. 6, 2006 |
| 7053563 |
Circuit arrangement for operating light sources |
May. 30, 2006 |
| 7053564 |
Ballast for a discharge lamp |
May. 30, 2006 |
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