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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 |
| 6791279 |
Single-switch electronic dimming ballast |
Sep. 14, 2004 |
| 6791286 |
Hid lamp operating circuit |
Sep. 14, 2004 |
| 6788007 |
Use of arc straightening in HID lamps operated at VHF frequencies |
Sep. 7, 2004 |
| 6784626 |
Electronic ballast and lighting fixture |
Aug. 31, 2004 |
| 6781327 |
Discharge lamp lighting device |
Aug. 24, 2004 |
| 6774576 |
Switch mode energy recovery for electro-luminescent lamp panels |
Aug. 10, 2004 |
| 6774580 |
Inverter circuit for a discharge tube |
Aug. 10, 2004 |
| 6774581 |
Electrodeless lamp system |
Aug. 10, 2004 |
| 6768271 |
Ballast and method for operating a lamp |
Jul. 27, 2004 |
| 6768274 |
Ballast with lamp-to-earth-ground fault protection circuit |
Jul. 27, 2004 |
| RE38547 |
Frequency-modulated converter with a series-parallel resonance |
Jul. 6, 2004 |
| 6756746 |
Method of delaying and sequencing the starting of inverters that ballast lamps |
Jun. 29, 2004 |
| 6756747 |
Apparatus and method for eliminating striation of fluorescent lamp with dimming control |
Jun. 29, 2004 |
| 6753657 |
Discrete modulation ballast operation and method of use |
Jun. 22, 2004 |
| 6753658 |
Electronic ballast circuit for operating a high intensity discharge lamp |
Jun. 22, 2004 |
| 6753659 |
Operating device for discharge lamps having a preheating device |
Jun. 22, 2004 |
| 6747418 |
Device and method for preheating the coil electrodes of a fluorescent lamp |
Jun. 8, 2004 |
| 6744219 |
Operating circuit for a discharge lamp with preheatable electrodes |
Jun. 1, 2004 |
| 6744220 |
Free-running circuit arrangement |
Jun. 1, 2004 |
| 6729318 |
System and process for controlling the step response of electric components |
May. 4, 2004 |
| 6727661 |
Self-ballasted fluorescent lamp |
Apr. 27, 2004 |
| 6727662 |
Dimming control system for electronic ballasts |
Apr. 27, 2004 |
| 6727663 |
Circuit arrangement for feeding a load |
Apr. 27, 2004 |
| 6727664 |
Portable fluorescent drop-light |
Apr. 27, 2004 |
| 6727665 |
Dimmer for energy saving lamp |
Apr. 27, 2004 |
| 6728494 |
Light-emitting device drive circuit, and optical transmission system using the circuit |
Apr. 27, 2004 |
| 6724153 |
Apparatus for protection of an inductive output tube (IOT) from stored energy in a linear high voltage power supply (HVPS) and its associated filter circuit during a high voltage arc |
Apr. 20, 2004 |
| 6717375 |
Discharge lamp lighting device and system comprising it |
Apr. 6, 2004 |
| 6710474 |
Circuit arrangement for switching on a partial circuit arrangement |
Mar. 23, 2004 |
| 6710551 |
High-intensity discharge lamp lighting apparatus and luminaire for using the same |
Mar. 23, 2004 |
| 6707260 |
Circuit arrangement including DC-AC converter having a dependable start circuit |
Mar. 16, 2004 |
| 6707262 |
Discharge lamp operating circuit having a circuit for detecting the proximity to capacitive operation |
Mar. 16, 2004 |
| 6707264 |
Sequential burst mode activation circuit |
Mar. 16, 2004 |
| 6700328 |
Discharge lamp driver circuit designed to minimize radiation or noise |
Mar. 2, 2004 |
| 6696791 |
Method for starting a discharge lamp |
Feb. 24, 2004 |
| 6696800 |
High frequency electronic ballast |
Feb. 24, 2004 |
| 6690122 |
Lamp ballast with SEPIC converter |
Feb. 10, 2004 |
| 6686703 |
High frequency electronic ballast |
Feb. 3, 2004 |
| 6683418 |
Inverter type illumination lighting apparatus |
Jan. 27, 2004 |
| 6677715 |
Portable electronic ballast |
Jan. 13, 2004 |
| 6677718 |
HID electronic ballast with glow to arc and warm-up control |
Jan. 13, 2004 |
| 6674252 |
Non-blinking direct current fluorescent lamp circuit |
Jan. 6, 2004 |
| 6664742 |
Filament cut-back circuit |
Dec. 16, 2003 |
| 6664743 |
Low loss operating circuit for a discharge lamp |
Dec. 16, 2003 |
| 6661185 |
Dimmable self-ballasted fluorescent lamp and discharge lamp operating apparatus |
Dec. 9, 2003 |
| 6657403 |
Circuit arrangement for operating a fluorescent lamp |
Dec. 2, 2003 |
| 6646387 |
AC-type plasma display panel having energy recovery unit in sustain driver |
Nov. 11, 2003 |
| 6646389 |
Discharge lamp ignition device, equipment and image forming apparatus |
Nov. 11, 2003 |
| 6630799 |
Resonant power supply and apparatus for producing vacuum arc discharges |
Oct. 7, 2003 |
| 6628090 |
Resonant driving system for a fluorescent lamp |
Sep. 30, 2003 |
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