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Class Information
Number: 315/209R
Name: Electric lamp and discharge devices: systems > Periodic switch in the supply circuit
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7436128 |
Driving circuit for hot cathode fluorescent lamps |
Oct. 14, 2008 |
| 7436124 |
Voltage fed inverter for fluorescent lamps |
Oct. 14, 2008 |
| 7432665 |
Method and device for driving a metal halide lamp |
Oct. 7, 2008 |
| 7432663 |
Circuit for igniting a high intensity discharge lamp |
Oct. 7, 2008 |
| 7432661 |
Electronic ballast having a flyback cat-ear power supply |
Oct. 7, 2008 |
| 7425804 |
Lamp drive device of projector |
Sep. 16, 2008 |
| 7425802 |
Discharge lamp lighting apparatus, luminaire and illumination system |
Sep. 16, 2008 |
| 7425800 |
Device for driving a light source module |
Sep. 16, 2008 |
| 7423389 |
LED driving device of overvoltage protection and duty control |
Sep. 9, 2008 |
| 7423388 |
Fixed lamp frequency synchronization with the resonant tank for discharge lamps |
Sep. 9, 2008 |
| 7420333 |
Mixed mode control for dimmable fluorescent lamp |
Sep. 2, 2008 |
| 7414372 |
Dimming ballast control circuit |
Aug. 19, 2008 |
| 7411359 |
Apparatus and method for providing dimming control of lamps and electrical lighting systems |
Aug. 12, 2008 |
| 7411355 |
Display device and driving device of light source for display device |
Aug. 12, 2008 |
| 7408329 |
Power supply unit for gas discharge processes |
Aug. 5, 2008 |
| 7408307 |
Ballast dimming control IC |
Aug. 5, 2008 |
| 7405522 |
Multiple failure detection shutdown protection circuit for an electronic ballast |
Jul. 29, 2008 |
| 7400100 |
Discharge-lamp lighting apparatus and projector |
Jul. 15, 2008 |
| 7397203 |
Fluorescent ballast with unique dimming control |
Jul. 8, 2008 |
| 7397196 |
Circuit arrangement for preventing high peak currents |
Jul. 8, 2008 |
| 7394207 |
Circuit arrangement having a full bridge with switching load relief for operating lamps |
Jul. 1, 2008 |
| 7394206 |
Electronic ballast with life-ended protection |
Jul. 1, 2008 |
| 7391167 |
Backlight assembly, display device and driving apparatus of light source for display device |
Jun. 24, 2008 |
| 7388335 |
Apparatus for providing a sinusoidally amplitude-modulated operating voltage, lighting system and method for generating an amplitude-modulated voltage |
Jun. 17, 2008 |
| 7385361 |
Ballast for high-pressure discharge lamp and method of operating the same |
Jun. 10, 2008 |
| 7382099 |
Striation control for current fed electronic ballast |
Jun. 3, 2008 |
| 7378804 |
Ballast for a discharge lamp with integrated control circuit for controlling switching element of dc power supply and inverter circuit |
May. 27, 2008 |
| 7378802 |
Discharge lamp lighting circuit |
May. 27, 2008 |
| 7378801 |
Driving circuit for inverter |
May. 27, 2008 |
| 7375476 |
Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices |
May. 20, 2008 |
| 7375474 |
Apparatus and method for driving backlight |
May. 20, 2008 |
| 7372214 |
Apparatus and method for driving lamp of liquid crystal display device |
May. 13, 2008 |
| 7372210 |
Method and apparatus for lamp heat control |
May. 13, 2008 |
| 7368884 |
DC/DC converter |
May. 6, 2008 |
| 7368881 |
Discharge lamp lighting apparatus and lamp system using the lighting apparatus |
May. 6, 2008 |
| 7368879 |
Pendulum resonant converter and method |
May. 6, 2008 |
| 7368878 |
Current-mode resonant ballast |
May. 6, 2008 |
| 7365500 |
Display device having lamp control circuit |
Apr. 29, 2008 |
| 7365498 |
Electrodeless discharge lamp lighting device and luminaire |
Apr. 29, 2008 |
| 7358689 |
Phase-control power controller for converting a line voltage to a RMS load voltage |
Apr. 15, 2008 |
| 7355356 |
Circuit arrangement and method for detecting a crest factor of a lamp current or a lamp operating voltage of an electric lamp |
Apr. 8, 2008 |
| 7355355 |
Discharge lamp lighting apparatus |
Apr. 8, 2008 |
| 7355354 |
Method for starting a discharge lamp using high energy initial pulse |
Apr. 8, 2008 |
| 7355351 |
Circuit arrangement having a converter without a transformer but with an inductor for the pulsed operation of dielectric barrier discharge lamps |
Apr. 8, 2008 |
| 7352134 |
Lamp containing fixed reverse phase switching power supply with time-based phase pulse triggering control |
Apr. 1, 2008 |
| 7348737 |
Lighting circuit for high-pressure discharge lamp |
Mar. 25, 2008 |
| 7348735 |
Lamp driver |
Mar. 25, 2008 |
| 7345434 |
Discharge lamp lighting apparatus and luminaire |
Mar. 18, 2008 |
| 7342362 |
Full-bridge soft switching inverter and driving method thereof |
Mar. 11, 2008 |
| 7339330 |
Methods and circuits for instant hot restart of high intensity discharge lamps |
Mar. 4, 2008 |
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