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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 |
| 7161305 |
Method and apparatus for single-ended conversion of DC to AC power for driving discharge lamps |
Jan. 9, 2007 |
| 7157865 |
Circuit for driving cold cathode tubes and external electrode fluorescent lamps |
Jan. 2, 2007 |
| 7154231 |
Gas discharge lamp dimming control method |
Dec. 26, 2006 |
| 7154230 |
Circuit arrangement for dimming at least one lamp |
Dec. 26, 2006 |
| 7154229 |
Electronic ballast with load shed circuit |
Dec. 26, 2006 |
| 7154228 |
Ballast for high pressure discharge lamp |
Dec. 26, 2006 |
| 7151344 |
Electroluminescent driver circuit |
Dec. 19, 2006 |
| 7141936 |
Driving circuit for light emitting diode |
Nov. 28, 2006 |
| 7138769 |
Device for operation of a high pressure discharge lamp and a projector device |
Nov. 21, 2006 |
| 7135825 |
LED power supply device |
Nov. 14, 2006 |
| 7129651 |
Remote control of electronic light ballast and other devices |
Oct. 31, 2006 |
| 7129650 |
Lighting apparatus for high intensity discharge lamp |
Oct. 31, 2006 |
| 7129647 |
Electronic ballast with programmable processor |
Oct. 31, 2006 |
| 7126520 |
Segmented sawtooth generator |
Oct. 24, 2006 |
| RE39341 |
Apparatus for lighting fluorescent lamp |
Oct. 17, 2006 |
| 7122972 |
Dimmable ballast with resistive input and low electromagnetic interference |
Oct. 17, 2006 |
| 7119490 |
Starter for minimizing damage to lamp electrodes of a discharge lamp at startup |
Oct. 10, 2006 |
| 7116063 |
Dimmable discharge lamp lighting device |
Oct. 3, 2006 |
| 7116062 |
Method of soft-starting a switching power supply including pulse width modulation circuit |
Oct. 3, 2006 |
| 7110269 |
Soft-switching techniques for power inverter legs |
Sep. 19, 2006 |
| 7110267 |
Circuit and method of igniting a high-pressure lamp |
Sep. 19, 2006 |
| 7102297 |
Ballast with end-of-lamp-life protection circuit |
Sep. 5, 2006 |
| 7102298 |
Integral lamp |
Sep. 5, 2006 |
| 7098604 |
Solar powered lamp having an auxiliary startup device |
Aug. 29, 2006 |
| 7098609 |
Discharge lamp driving circuit provided with discharge detecting pattern |
Aug. 29, 2006 |
| 7098612 |
Frequency synchronization device for LCD lamps |
Aug. 29, 2006 |
| 7098727 |
Boosting circuit |
Aug. 29, 2006 |
| 7093962 |
Light emitting device and method of using same |
Aug. 22, 2006 |
| 7095181 |
Method and apparatus for controllably generating sparks in an ignition system or the like |
Aug. 22, 2006 |
| 7095185 |
Fluorescent lamp electronic ballast |
Aug. 22, 2006 |
| 7095186 |
Control circuit for controlling an electron-emitting device |
Aug. 22, 2006 |
| 7095637 |
Method of determining working voltage of inverter |
Aug. 22, 2006 |
| 7091670 |
Safety interlock apparatus and method |
Aug. 15, 2006 |
| 7091671 |
Electronic ballast with rail voltage switching |
Aug. 15, 2006 |
| 7088055 |
High efficiency controller of a gas-filled light emitting tube |
Aug. 8, 2006 |
| 7084579 |
Two light level ballast |
Aug. 1, 2006 |
| 7084580 |
Discharge lamp lighting circuit |
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 |
| 7081709 |
Method and apparatus for lighting a discharge lamp |
Jul. 25, 2006 |
| 7081715 |
Method of providing break-in conditioning for a bi-level illumination system |
Jul. 25, 2006 |
| 7075245 |
Driving circuit for multiple cold cathode fluorescent lamps backlight applications |
Jul. 11, 2006 |
| 7075246 |
Discharge lamp illumination circuit |
Jul. 11, 2006 |
| 7075253 |
Method for operation of a lighting system |
Jul. 11, 2006 |
| 7075254 |
Lighting ballast having boost converter with on/off control and method of ballast operation |
Jul. 11, 2006 |
| 7067988 |
Inverter circuit for lighting discharge lamps with reduced power consumption |
Jun. 27, 2006 |
| 7057351 |
Emergency lighting function illumination appliance |
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 |
| 7057390 |
Linear beam raster magnet driver based on H-bridge technique |
Jun. 6, 2006 |
| 7053561 |
Circuit apparatus and method for operating a lamp |
May. 30, 2006 |
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