Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 315/245
Name: Electric lamp and discharge devices: systems > Condenser in the supply circuit > Resistance in the condenser circuit
Description: Systems provided with a resistance in a circuit which includes the condenser.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8624518 Power management circuit and liquid crystal display using same Jan. 7, 2014
8508146 Electronic device, control circuit, and method for controlling light emitting element Aug. 13, 2013
8232737 Electronic HID ballast with current source/sink to power recessed can insulation detector Jul. 31, 2012
8129915 Discharge lamp operating device, illumination device and liquid crystal display device Mar. 6, 2012
7612504 Lamp with integral voltage converter having phase-controlled dimming circuit for reducing RMS load voltage Nov. 3, 2009
7550930 Method and device for lighting an electronic or electromechanical apparatus Jun. 23, 2009
7053564 Ballast for a discharge lamp May. 30, 2006
7009346 Driving an EL panel without DC bias Mar. 7, 2006
6894440 Method and device for lighting an electronic or electromechanical apparatus May. 17, 2005
6495970 Lamp stand with multi-stage light modulation Dec. 17, 2002
6448720 Circuit for driving an HID lamp Sep. 10, 2002
6414446 Switching device Jul. 2, 2002
6191540 Devices for powering a motor vehicle headlight discharge lamp Feb. 20, 2001
6072286 Auxiliary lighting control circuit and method for a HID lamp lighting system Jun. 6, 2000
5973608 Remotely activated electrical control arrangement Oct. 26, 1999
5869936 Strobe device Feb. 9, 1999
5866980 Sulfur/selenium lamp with improved characteristics Feb. 2, 1999
5543690 High voltage ignition circuit for a discharge lamp Aug. 6, 1996
5387849 Lamp ballast system characterized by a power factor correction of greater than or equal to 90% Feb. 7, 1995
5387847 Passive power factor ballast circuit for the gas discharge lamps Feb. 7, 1995
5343125 High-pressure discharge lamp with pulsed inverter operating circuit, and method of operating a discharge lamp Aug. 30, 1994
5159244 Ignition circuit for gas discharge lamp Oct. 27, 1992
5118991 Electron beam generator for an electron gun Jun. 2, 1992
5070277 Electrodless hid lamp with microwave power coupler Dec. 3, 1991
4988923 Lighting equipment for providing bright illumination with limited surge Jan. 29, 1991
4961029 Discharge lamp lighting device Oct. 2, 1990
4914354 Reactor-type ballast circuit Apr. 3, 1990
4887008 Electrodeless lamp bulb of modified shape for providing uniform emission of radiation Dec. 12, 1989
4746841 Fluorescent lamp operating device May. 24, 1988
4723096 Arc lamp power supply using a voltage multiplier Feb. 2, 1988
4647820 Discharge lamp ignition and supply circuit having a PTC resistor Mar. 3, 1987
4647817 Discharge lamp starting circuit particularly for compact fluorescent lamps Mar. 3, 1987
4645981 Process and apparatus for the surface treatment of workpieces by glow discharge Feb. 24, 1987
4626745 Ballast circuit for lamps with low voltage gas discharge tubes Dec. 2, 1986
4618803 Current limited strobe charge circuit Oct. 21, 1986
4609849 High pressure sodium vapor lamp having D.C. resistive ballast circuits Sep. 2, 1986
4572991 Higher efficiency incandescent lighting unit having an improved ballast unit Feb. 25, 1986
4544863 Power supply apparatus for fluorescent lamp Oct. 1, 1985
4540917 Pulse network for fluorescent lamp dimming Sep. 10, 1985
RE31970 High efficiency ballast system for gaseous discharge lamps Aug. 13, 1985
4513225 Fluorescent lamp series system Apr. 23, 1985
4406976 Discharge lamp ballast circuit Sep. 27, 1983
4388564 Energy saving fluorescent lamp circuit Jun. 14, 1983
4366417 Suppression circuit for interference pulses in transformers with high leakage inductance Dec. 28, 1982
4288725 Lightweight fluorescent lamp ballast Sep. 8, 1981
4284925 Multiple level dimming circuit for fluorescent lamp Aug. 18, 1981
4259614 Electronic ballast-inverter for multiple fluorescent lamps Mar. 31, 1981
4253043 Electric arrangement including at least one gas and/or vapor discharge tube Feb. 24, 1981
4238707 Power supply system for a semiconductor light source Dec. 9, 1980
4236100 Lighting circuits Nov. 25, 1980

1 2










 
 
  Recently Added Patents
Method for designing sunlight-reflection and heat-radiation multilayer film
Motion-compensated prediction of inter-layer residuals
Method of forming wafer level mold using glass fiber and wafer structure formed by the same
Invisible fence battery charger
Blur correction device and imaging apparatus
Method, system and computer program product for managing funds in custodial deposit accounts
Tractor
  Randomly Featured Patents
Clock speed limiter for microprocessor
Multi-state memory
Code generation and allocation method
Pulling clamp
Lift for skids and pallets
Heterodimers of glutamic acid
Persistent state database for operating system services
Cassette adapter and magnetic recording/reproduction apparatus
Ceramic guide block and method of manufacture
Method for forming a dielectric