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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 |
| 6392366 |
Traic dimmable electrodeless fluorescent lamp |
May. 21, 2002 |
| 6388394 |
High-intensity discharge lamp lighting device and lighting system |
May. 14, 2002 |
| 6389050 |
High-speed CMOS driver for vertical-cavity surface-emitting lasers |
May. 14, 2002 |
| 6380693 |
Apparatus for operating at least one light-emitting diode |
Apr. 30, 2002 |
| 6380695 |
Driving device for fluorescent tube |
Apr. 30, 2002 |
| 6376934 |
Voltage waveform generator |
Apr. 23, 2002 |
| 6376989 |
Dimmable discharge lamp for dielectrically impeded discharges |
Apr. 23, 2002 |
| 6377000 |
Electronic ballast for gas discharge lamp |
Apr. 23, 2002 |
| 6377107 |
Fast turn-off circuit arrangement |
Apr. 23, 2002 |
| 6373199 |
Reducing stress on ignitor circuitry for gaseous discharge lamps |
Apr. 16, 2002 |
| 6369518 |
Lamps with electronic control of color temperature and color rendering index |
Apr. 9, 2002 |
| 6366027 |
Circuit device for operating a discharge lamp by means of a high-frequency current |
Apr. 2, 2002 |
| 6366029 |
Lamp ballast for reducing interference current |
Apr. 2, 2002 |
| 6366031 |
Electronic ballast for at least one low-pressure discharge lamp |
Apr. 2, 2002 |
| 6362575 |
Voltage regulated electronic ballast for multiple discharge lamps |
Mar. 26, 2002 |
| 6362578 |
LED driver circuit and method |
Mar. 26, 2002 |
| 6359393 |
Dimmer for a gas discharge lamp employing frequency shifting |
Mar. 19, 2002 |
| 6359395 |
Control circuit for power factor corrected electronic ballasts and power supplies |
Mar. 19, 2002 |
| 6356024 |
Lighting device for normal and emergent use |
Mar. 12, 2002 |
| 6356033 |
Light source using dielectric barrier discharge lamp, and power supply |
Mar. 12, 2002 |
| 6356034 |
Low voltage discharge lamp power supply |
Mar. 12, 2002 |
| 6356035 |
Deep PWM dimmable voltage-fed resonant push-pull inverter circuit for LCD backlighting with a coupled inductor |
Mar. 12, 2002 |
| 6356039 |
Modular electronic supply device for discharge lamp |
Mar. 12, 2002 |
| 6353293 |
Method and apparatus for controllably generating sparks in an ignition system or the like |
Mar. 5, 2002 |
| 6351082 |
Electronic ballast for a fluorescent lamp |
Feb. 26, 2002 |
| 6348767 |
Electronic ballast with continued conduction of line current |
Feb. 19, 2002 |
| 6346779 |
Variable frequency self-oscillating half-bridge drive architecture particularly for electric loads |
Feb. 12, 2002 |
| 6344717 |
High frequency, high efficiency electronic lighting system with iodine and/or bromine-based metal halide high pressure discharge lamp |
Feb. 5, 2002 |
| 6337800 |
Electronic ballast with inductive power feedback |
Jan. 8, 2002 |
| 6333604 |
Integrated ignition circuit and method |
Dec. 25, 2001 |
| 6333606 |
Ballast for discharge lamp |
Dec. 25, 2001 |
| 6329761 |
Frequency controlled half-bridge inverter for variable loads |
Dec. 11, 2001 |
| 6326737 |
Current fed parallel resonant ballast |
Dec. 4, 2001 |
| 6326740 |
High frequency electronic ballast for multiple lamp independent operation |
Dec. 4, 2001 |
| 6323600 |
Process for generating voltage pulse sequences and circuit assembly therefor |
Nov. 27, 2001 |
| 6323603 |
Resonant flyback ignitor circuit for a gas discharge lamp control circuit |
Nov. 27, 2001 |
| 6323605 |
Gas discharge tube changeable color display and digital controller system |
Nov. 27, 2001 |
| 6320330 |
Illuminating electronic device and illumination method |
Nov. 20, 2001 |
| 6316881 |
Method and apparatus for controlling a discharge lamp in a backlighted display |
Nov. 13, 2001 |
| 6316883 |
Power-factor correction circuit of electronic ballast for fluorescent lamps |
Nov. 13, 2001 |
| 6316888 |
Ballast for at least one gas discharge lamp and method for operating such a ballast |
Nov. 13, 2001 |
| 6310444 |
Multiple lamp LCD backlight driver with coupled magnetic components |
Oct. 30, 2001 |
| 6310447 |
Method for operating at least one fluorescent lamp, and electronic ballast therefor |
Oct. 30, 2001 |
| 6304154 |
Circuit arrangement including a self-oscillator circuit |
Oct. 16, 2001 |
| 6300722 |
Non-thermionic ballast-free energy-efficient light-producing gas discharge system and method |
Oct. 9, 2001 |
| 6294878 |
Piezoelectric transformer, piezoelectric inverter and liquid crystal display |
Sep. 25, 2001 |
| 6294879 |
Ballast for a discharge lamp |
Sep. 25, 2001 |
| 6294882 |
Circuit arrangement with improved power-factor for feeding a discharge lamp |
Sep. 25, 2001 |
| 6291945 |
Discharge lamp lighting device |
Sep. 18, 2001 |
| 6288500 |
Circuit arrangement for detecting rectification of discharge lamps |
Sep. 11, 2001 |
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