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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 |
| 7443103 |
High pressure lamp with lamp flicker suppression and lamp voltage control |
Oct. 28, 2008 |
| 7439944 |
Light emitting diode multiphase driver circuit and method |
Oct. 21, 2008 |
| 7439689 |
Lamp driving device having impedance component detecting abnormal discharge |
Oct. 21, 2008 |
| 7439688 |
Discharge lamp lighting circuit with power control |
Oct. 21, 2008 |
| 7439679 |
Method and apparatus for illuminating light sources within an electronic device |
Oct. 21, 2008 |
| 7436131 |
Thermal protection for lamp ballasts |
Oct. 14, 2008 |
| 7436129 |
Triple-loop fluorescent lamp driver |
Oct. 14, 2008 |
| 7436128 |
Driving circuit for hot cathode fluorescent lamps |
Oct. 14, 2008 |
| 7436127 |
Ballast control circuit |
Oct. 14, 2008 |
| 7432670 |
Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device |
Oct. 7, 2008 |
| 7432668 |
Sensing light emitted from multiple light sources |
Oct. 7, 2008 |
| 7432666 |
Cold cathode fluorescent lamp driving system |
Oct. 7, 2008 |
| 7432665 |
Method and device for driving a metal halide lamp |
Oct. 7, 2008 |
| 7432664 |
Circuit for powering a high intensity discharge lamp |
Oct. 7, 2008 |
| 7432661 |
Electronic ballast having a flyback cat-ear power supply |
Oct. 7, 2008 |
| 7432660 |
IC-based low cost reliable electronic ballast with multiple striking attempts and end of lamp life protection |
Oct. 7, 2008 |
| 7429834 |
Multi-lamp driver with active current regulator |
Sep. 30, 2008 |
| 7429832 |
Light control fluorescent lamp and circuit thereof |
Sep. 30, 2008 |
| 7429830 |
Power control of a fluorescent lamp |
Sep. 30, 2008 |
| 7429829 |
Discharge lamp lighting circuit with an open protection circuit |
Sep. 30, 2008 |
| 7425803 |
Method and circuit for driving a low voltage light emitting diode |
Sep. 16, 2008 |
| 7425802 |
Discharge lamp lighting apparatus, luminaire and illumination system |
Sep. 16, 2008 |
| 7425801 |
LED driving device for multiple color LED displays |
Sep. 16, 2008 |
| 7425800 |
Device for driving a light source module |
Sep. 16, 2008 |
| 7425777 |
Lighting circuit |
Sep. 16, 2008 |
| 7423387 |
Apparatus and method for controlling colour and colour temperature of light generated by a digitally controlled luminaire |
Sep. 9, 2008 |
| 7420829 |
Hybrid control for discharge lamps |
Sep. 2, 2008 |
| 7420336 |
Method of controlling cathode voltage with low lamp's arc current |
Sep. 2, 2008 |
| 7417616 |
Inverter for liquid crystal display |
Aug. 26, 2008 |
| 7417384 |
Load control system and method |
Aug. 26, 2008 |
| 7417383 |
Apparatus and method of driving lamp of liquid crystal display device |
Aug. 26, 2008 |
| 7414373 |
Discharge lamp driving circuit and method of driving a discharge lamp |
Aug. 19, 2008 |
| 7414372 |
Dimming ballast control circuit |
Aug. 19, 2008 |
| 7414371 |
Voltage regulation loop with variable gain control for inverter circuit |
Aug. 19, 2008 |
| 7414369 |
Control system for fluorescent light fixture |
Aug. 19, 2008 |
| 7411360 |
Apparatus and method for striking a fluorescent lamp |
Aug. 12, 2008 |
| 7411359 |
Apparatus and method for providing dimming control of lamps and electrical lighting systems |
Aug. 12, 2008 |
| 7411357 |
Liquid crystal and device of driving light source therefor |
Aug. 12, 2008 |
| 7408308 |
LED drive circuit, LED lighting device, and backlight |
Aug. 5, 2008 |
| 7408307 |
Ballast dimming control IC |
Aug. 5, 2008 |
| 7405523 |
Remote control of lighting |
Jul. 29, 2008 |
| 7405522 |
Multiple failure detection shutdown protection circuit for an electronic ballast |
Jul. 29, 2008 |
| 7402960 |
LED-based lamp apparatus |
Jul. 22, 2008 |
| 7402959 |
Phase sampling protection device |
Jul. 22, 2008 |
| 7402958 |
Display power partitioning |
Jul. 22, 2008 |
| 7402956 |
Ballast with zero voltage switching converter |
Jul. 22, 2008 |
| 7400310 |
Pulse signal drive circuit |
Jul. 15, 2008 |
| 7400100 |
Discharge-lamp lighting apparatus and projector |
Jul. 15, 2008 |
| 7400095 |
Portable electric lighting fixture |
Jul. 15, 2008 |
| 7397203 |
Fluorescent ballast with unique dimming control |
Jul. 8, 2008 |
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