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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 |
| 6285136 |
Lighting driver for discharge lamp |
Sep. 4, 2001 |
| 6285138 |
Apparatus for lighting fluorescent lamp |
Sep. 4, 2001 |
| 6281636 |
Neutral-point inverter |
Aug. 28, 2001 |
| 6281638 |
Converter/inverter full bridge ballast circuit |
Aug. 28, 2001 |
| 6281639 |
Cold cathode discharge lamp lighting circuit |
Aug. 28, 2001 |
| 6281641 |
Electronic ballast for one or more lamps |
Aug. 28, 2001 |
| 6278244 |
Circuit arrangement for operating a discharge lamp in synchronism with an image writing signal |
Aug. 21, 2001 |
| 6271633 |
High power factor electronic ballast with fully differential circuit topology |
Aug. 7, 2001 |
| 6265835 |
Energy-efficient ultraviolet source and method |
Jul. 24, 2001 |
| 6262542 |
Electronic ballast system |
Jul. 17, 2001 |
| 6259213 |
Circuit arrangement for operating at least one low-pressure discharge lamp |
Jul. 10, 2001 |
| 6255785 |
High power factor electronic ballast with low lamp current peak ratio |
Jul. 3, 2001 |
| 6252357 |
Self-ballasted fluorescent lamp and lighting fixture |
Jun. 26, 2001 |
| 6246181 |
Discharge lamp lighting device |
Jun. 12, 2001 |
| 6246182 |
Electronic track lighting system |
Jun. 12, 2001 |
| 6246187 |
System for promoting passive end of life light source failure |
Jun. 12, 2001 |
| 6242867 |
Circuit for synchronizing the ignition of electronic ballast discharge lamps |
Jun. 5, 2001 |
| 6239556 |
Long life discharge lamp operating circuit with reduced lamp flicker |
May. 29, 2001 |
| 6239557 |
Transformer winding technique with reduced parasitic capacitance effects |
May. 29, 2001 |
| 6232725 |
Circuit arrangement for operating a high-pressure discharge lamp |
May. 15, 2001 |
| RE37168 |
Electronic candle simulator |
May. 8, 2001 |
| 6229268 |
Device for supplying power to at least one bromine tungsten filament lamp |
May. 8, 2001 |
| 6229269 |
System for and method of operating a discharge lamp |
May. 8, 2001 |
| 6229270 |
Variable high frequency lamp controllers and systems |
May. 8, 2001 |
| 6229718 |
Parallel-resonant bridge inverter |
May. 8, 2001 |
| 6225751 |
Fluorescent lamp drive circuit of an image formation apparatus |
May. 1, 2001 |
| 6225753 |
Electronic ballast that is controlled by the operation of a shared switch |
May. 1, 2001 |
| 6225755 |
High power factor electronic ballast with simplified circuit topology |
May. 1, 2001 |
| 6225760 |
Fluorescent lamp dimmer system |
May. 1, 2001 |
| 6222325 |
Fluorescent lamp control circuit |
Apr. 24, 2001 |
| 6222326 |
Ballast circuit with independent lamp control |
Apr. 24, 2001 |
| 6222327 |
Lighting device for illumination and lamp provided with the same |
Apr. 24, 2001 |
| 6218782 |
Fluorescent lighting assembly with wireless ballast |
Apr. 17, 2001 |
| 6218789 |
Metal halide lamp having specified relation between electrode distance and operation voltage, and operating at acoustic standing wave frequency |
Apr. 17, 2001 |
| 6215255 |
Electric ballast system |
Apr. 10, 2001 |
| 6211620 |
Ballast for fluorescent lamp |
Apr. 3, 2001 |
| 6211624 |
Method and device for the modulation of the intensity of fluorescent lamps |
Apr. 3, 2001 |
| 6208085 |
Circuit for power-factor correction |
Mar. 27, 2001 |
| 6208086 |
Halogen power converter with complementary switches |
Mar. 27, 2001 |
| 6204609 |
Enhanced inverter for powering an EL lamp |
Mar. 20, 2001 |
| 6204611 |
Pulse ignition apparatus for a discharge lamp |
Mar. 20, 2001 |
| 6204614 |
Bi-level output electronic high intensity discharge (HID) ballast system |
Mar. 20, 2001 |
| 6198231 |
Circuit configuration for operating at least one discharge lamp |
Mar. 6, 2001 |
| 6198232 |
Discharge lamp circuit with dual ignition coils |
Mar. 6, 2001 |
| 6198233 |
Neon sign transformer module and receptacle |
Mar. 6, 2001 |
| 6194840 |
Self-oscillating resonant converter with passive filter regulator |
Feb. 27, 2001 |
| 6194844 |
Circuit arrangement and method for operating at least one high-pressure discharge lamp |
Feb. 27, 2001 |
| 6194845 |
Ballasts with tapped inductor arrangements for igniting and powering high intensity discharge lamps |
Feb. 27, 2001 |
| 6191540 |
Devices for powering a motor vehicle headlight discharge lamp |
Feb. 20, 2001 |
| 6188184 |
Electronic ballast with reduced operating frequency after lamp ignition |
Feb. 13, 2001 |
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