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Class Information
Number: 315/242
Name: Electric lamp and discharge devices: systems > Condenser in the supply circuit > Condenser in shunt to the load device and the supply > With an inductance in the circuit
Description: Systems having an inductance connected in the circuit.

Sub-classes under this class:

Class Number Class Name Patents
315/243 Inductance in series with the load device and the supply 86

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8093836 Circuit arrangement and method for striking a discharge lamp Jan. 10, 2012
7804253 Self-exciting step-up converter Sep. 28, 2010
7429828 Method and system for luminance characterization Sep. 30, 2008
7235931 Discharge lamp lighting apparatus for lighting multiple discharge lamps Jun. 26, 2007
7190124 Two-wire dimmer with power supply and load protection circuit in the event of switch failure Mar. 13, 2007
7042165 Driver circuit for LED vehicle lamp May. 9, 2006
6867553 Continuous mode voltage fed inverter Mar. 15, 2005
6793366 Watertight, low power L.E.D. flashlight Sep. 21, 2004
6541920 DC/DC converter and self-luminous display apparatus Apr. 1, 2003
6504318 Supply coupling of a fluorescent lamp Jan. 7, 2003
6486613 Reducing the clamping voltage of operating devices for gas discharge lamps Nov. 26, 2002
6448950 Energy efficient resonant switching electroluminescent display driver Sep. 10, 2002
6198226 Low-noise drive circuit for electroluminescent lamp, and electroluminescent lamp assembly comprising same Mar. 6, 2001
6188179 Induction circuits for lighting Feb. 13, 2001
6181078 Discharge lamp lighting system Jan. 30, 2001
6034485 Low-voltage non-thermionic ballast-free energy-efficient light-producing gas discharge system and method Mar. 7, 2000
5757144 Gas discharge lamp ballasting means May. 26, 1998
5537010 Voltage-comparator, solid-state, current-switch starter for fluorescent lamp Jul. 16, 1996
5446348 Apparatus for providing ignition to a gas turbine engine and method of short circuit detection Aug. 29, 1995
5444334 System for starting a high intensity discharge lamp Aug. 22, 1995
5428264 Electronic ballast with controlled operating voltage Jun. 27, 1995
5412286 Variable voltage ballast system for mini-fluorescent lamp May. 2, 1995
5410466 High power-factor inverter device having reduced output ripple Apr. 25, 1995
5396152 Electrical circuit for the pulsed operation of high-pressure gas-discharge lamps Mar. 7, 1995
5349270 Transformerless fluorescent lamp operating circuit, particularly for a compact fluorescent lamp, with phase-shifted inverter control Sep. 20, 1994
5338110 Circuit, having multiple series resonant paths, for lighting a blinking fluorescent lamp without adversely affecting lamp life Aug. 16, 1994
5266869 Discharge lamp lighting apparatus having output impedance which limits current flow therethrough after start of discharging Nov. 30, 1993
5256939 Magnetic electronic fluorescent lamp ballast Oct. 26, 1993
5059867 Ballast circuit with improved transfer functions Oct. 22, 1991
5023519 Circuit for starting and operating a gas discharge lamp Jun. 11, 1991
4983888 Fluorescent lamp device Jan. 8, 1991
4885507 Electronic starter combined with the L-C ballast of a fluorescent lamp Dec. 5, 1989
4808888 Starting circuit for gaseous discharge lamps Feb. 28, 1989
4806830 Device and process for lighting a fluorescent discharge lamp Feb. 21, 1989
4775822 Power network fluorescent lamp operating circuit Oct. 4, 1988
4749914 Circuit system for igniting and operating a high-pressure discharge lamp, particularly a sodium vapor lamp Jun. 7, 1988
4723098 Electronic ballast circuit for fluorescent lamps Feb. 2, 1988
4710682 Fluorescent lamp operating circuit Dec. 1, 1987
4701673 Ballast adaptor for improving operation of fluorescent lamps Oct. 20, 1987
4695770 Circuit for switching current in an inductive load Sep. 22, 1987
4687971 Power supply for discharge lamp Aug. 18, 1987
4683404 Starting circuit and apparatus for high pressure sodium lamps Jul. 28, 1987
4675576 High-reliability high-efficiency electronic ballast Jun. 23, 1987
4672273 Electronic flash device for camera Jun. 9, 1987
4663571 Electronic ballast with ground-fault protection May. 5, 1987
4647819 Metal vapor lamp starting and operating apparatus Mar. 3, 1987
4644228 Series-resonant parallel-loaded fluorescent lamp ballast Feb. 17, 1987
4633141 Low voltage power source power inverter for an electroluminescent drive Dec. 30, 1986
4608523 Phase correction for series-resonant ballasts Aug. 26, 1986
4540917 Pulse network for fluorescent lamp dimming Sep. 10, 1985

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