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Class Information
Number: 315/246
Name: Electric lamp and discharge devices: systems > Pulsating or a.c. supply
Description: Systems wherein the load devices in the system is supplied with either pulsating or alternating current or potential (but not both).










Sub-classes under this class:

Class Number Class Name Patents
315/268 Discharge control discharge device load 17
315/267 Electromagnetic influenced discharge device load 78
315/283 Inductance in the supply circuit 155
315/248 Induction-type discharge device load 673
315/287 Periodic-type current and/or voltage regulator in the supply circuit 222
315/260 Plural cathode and/or anode discharge device load 40
315/250 Plural load device systems 118
315/249 Potential node-type discharge device load 5
315/276 Transformer in the supply circuit 611
315/247 With power factor control device 811


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
7282869 HID ballast and lamp tester Oct. 16, 2007
7274155 Flash lamp drive circuit Sep. 25, 2007
7274149 Lamp with integral pulse width modulated voltage control circuit Sep. 25, 2007
7274148 Lamp having fixed forward phase switching power supply with time-based triggering Sep. 25, 2007
7271546 Lighting device for dielectric barrier discharge lamp Sep. 18, 2007
7271551 Driver protection circuit for a push-pull type discharge lamp Sep. 18, 2007
7262557 Apparatus for illuminating footwear Aug. 28, 2007
7256553 Lamp driving system controlled by electrical isolation Aug. 14, 2007
7242147 Current sharing scheme for multiple CCF lamp operation Jul. 10, 2007
7221102 High-frequency power supply device May. 22, 2007
7221107 Low frequency electronic ballast for gas discharge lamps May. 22, 2007
7215086 Electronic light generating element light bulb May. 8, 2007
7193372 Electronic ballast with voltage converter having improved damping arrangement Mar. 20, 2007
7183723 PWM illumination control circuit with low visual noise for driving LED Feb. 27, 2007
7170237 Device for operation of a high pressure discharge lamp Jan. 30, 2007
7170236 Method of setting desired RMS load voltage in a lamp Jan. 30, 2007
7170231 Lamp that sets desired RMS load voltage with variable pulse width modulation Jan. 30, 2007
7170198 Trigger arrangement for a Marx generator Jan. 30, 2007
7166964 Lamp containing pulse width modulated voltage conversion circuit Jan. 23, 2007
7161312 Distributed fluorescent light control system Jan. 9, 2007
7154230 Circuit arrangement for dimming at least one lamp Dec. 26, 2006
7138769 Device for operation of a high pressure discharge lamp and a projector device Nov. 21, 2006
7109666 Lighting device for a dielectric barrier discharge lamp Sep. 19, 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
7075244 Multi-lamp backlight system Jul. 11, 2006
7075249 Arrangement in connection with a coupling device of a fluorescent lamp Jul. 11, 2006
7064495 Electronic circuit and method of supplying energy to a high-pressure gas-discharge lamp Jun. 20, 2006
7064497 Dead-time-modulated synchronous PWM controller for dimmable CCFL royer inverter Jun. 20, 2006
7057358 Electronic ballast and operating method for a gas discharge lamp Jun. 6, 2006
7053564 Ballast for a discharge lamp May. 30, 2006
7053557 Retrofit light emitting diode tube May. 30, 2006
7049768 High intensity discharge lamps with electronic control of dimming May. 23, 2006
7049762 Portable fluorescent task lamp May. 23, 2006
7049750 Lamp having integral voltage controller May. 23, 2006
7049761 Light tube and power supply circuit May. 23, 2006
7049764 Electrodeless lighting apparatus using microwave and method for controlling power thereof May. 23, 2006
7042166 Circuit arrangement for operating electric lamps May. 9, 2006
7042168 Fluorescent-lamp driving apparatus adopting high-frequency inverter driving method, and compact self-ballasted fluorescent lamp equipped with such fluorescent-lamp driving apparatus May. 9, 2006
7023144 Device for operation of a high pressure discharge lamp Apr. 4, 2006
7009347 Multiple discharge load electronic ballast system Mar. 7, 2006
7005679 Multiple component solid state white light Feb. 28, 2006
6998787 Method of operating a microcavity discharge device Feb. 14, 2006
6982526 Dielectric barrier discharge lamp and method and circuit for igniting and operating said lamp Jan. 3, 2006
6979958 High efficacy metal halide lamp with praseodymium and sodium halides in a configured chamber Dec. 27, 2005
6963175 Illumination control system Nov. 8, 2005
RE38837 Efficient power transfer in electronic ballast Oct. 18, 2005
6954037 Electrodeless lighting system Oct. 11, 2005
6949887 High frequency inductive lamp and power oscillator Sep. 27, 2005
6936968 Retrofit light emitting diode tube Aug. 30, 2005
6934168 Single stage PFC and power converter unit Aug. 23, 2005

1 2 3 4 5 6 7 8 9 10 11 12










 
 
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