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Class Information
Number: 315/DIG.7
Name: Electric lamp and discharge devices: systems > Starting and control circuits for gas discharge lamp using transistors
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619447 |
High voltage high side transistor driver |
Nov. 17, 2009 |
| 7598677 |
Multiple failure detection shutdown protection circuit for an electronic ballast |
Oct. 6, 2009 |
| 7589476 |
Power supply for external electrode fluorescent lamps |
Sep. 15, 2009 |
| 7586270 |
Circuit and method for the operation of miniature high pressure short-arc lamps using alternating current |
Sep. 8, 2009 |
| 7560874 |
Electronic ballast with improved inverter startup circuit |
Jul. 14, 2009 |
| 7554273 |
Protection for external electrode fluorescent lamp system |
Jun. 30, 2009 |
| 7531970 |
Power source driving circuits and controllers thereof |
May. 12, 2009 |
| 7531965 |
Discharge centering lamp lighting device |
May. 12, 2009 |
| 7479742 |
Discharge lamp lighting circuit |
Jan. 20, 2009 |
| 7477021 |
Non-discontinuous neon power supply with high power factor |
Jan. 13, 2009 |
| 7474064 |
Lamp driving circuit for a discharge lamp and a control method thereof |
Jan. 6, 2009 |
| 7459867 |
Program start ballast |
Dec. 2, 2008 |
| 7443103 |
High pressure lamp with lamp flicker suppression and lamp voltage control |
Oct. 28, 2008 |
| 7439687 |
Discharge lamp lighting circuit |
Oct. 21, 2008 |
| 7436124 |
Voltage fed inverter for fluorescent lamps |
Oct. 14, 2008 |
| 7425802 |
Discharge lamp lighting apparatus, luminaire and illumination system |
Sep. 16, 2008 |
| 7425777 |
Lighting circuit |
Sep. 16, 2008 |
| 7417381 |
Discharge lamp lighting circuit |
Aug. 26, 2008 |
| 7411360 |
Apparatus and method for striking a fluorescent lamp |
Aug. 12, 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 |
| 7388336 |
Discharge lamp driving circuit having a signal detection circuit therein |
Jun. 17, 2008 |
| 7385361 |
Ballast for high-pressure discharge lamp and method of operating the same |
Jun. 10, 2008 |
| 7385360 |
High intensity discharge lamp control |
Jun. 10, 2008 |
| 7368878 |
Current-mode resonant ballast |
May. 6, 2008 |
| 7348737 |
Lighting circuit for high-pressure discharge lamp |
Mar. 25, 2008 |
| 7339327 |
Resonant circuit for halogen lighting |
Mar. 4, 2008 |
| 7339326 |
DC/AC converter for supplying two gas discharge lamps |
Mar. 4, 2008 |
| 7332876 |
Lighting apparatus for discharge lamp |
Feb. 19, 2008 |
| 7327096 |
Electrode temperature differential operation of a discharge lamp |
Feb. 5, 2008 |
| 7323829 |
Minimizing bond wire power losses in integrated circuit full bridge CCFL drivers |
Jan. 29, 2008 |
| 7321200 |
Square wave drive system |
Jan. 22, 2008 |
| 7312588 |
Ballast with frequency-diagnostic lamp fault protection circuit |
Dec. 25, 2007 |
| 7312586 |
Ballast power supply |
Dec. 25, 2007 |
| 7294974 |
Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship |
Nov. 13, 2007 |
| 7294973 |
Discharge tube lighting apparatus, light source apparatus, and display apparatus |
Nov. 13, 2007 |
| 7288897 |
Circuit arrangement for operating at least one high pressure discharge lamp |
Oct. 30, 2007 |
| 7274154 |
CFL ballast with passive valley fill and crest factor control |
Sep. 25, 2007 |
| 7259523 |
Circuit arrangement |
Aug. 21, 2007 |
| 7253569 |
Open lamp detection in an EEFL backlight system |
Aug. 7, 2007 |
| 7247991 |
Dimming ballast and method |
Jul. 24, 2007 |
| 7242149 |
Lamp driving circuit with floating power supply driver |
Jul. 10, 2007 |
| 7221111 |
Switching power supply device and method of controlling the switching device |
May. 22, 2007 |
| 7218066 |
Driver for a gas discharge lamp |
May. 15, 2007 |
| 7208887 |
Ballast having multiple circuit failure protection and method for ballast circuit protection |
Apr. 24, 2007 |
| 7205725 |
Electronic stabilizer used for hand-held lamp |
Apr. 17, 2007 |
| 7193375 |
Electronic ballast having a pump circuit for a discharge lamp having preheatable electrodes |
Mar. 20, 2007 |
| 7183721 |
Ballast with circuit for detecting and eliminating an arc condition |
Feb. 27, 2007 |
| 7176638 |
Discharge lamp lighting circuit |
Feb. 13, 2007 |
| 7164237 |
Circuit arrangement for operating discharge lamps |
Jan. 16, 2007 |
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