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| Number | Title | Issue Date |
| 8129911 | Magnetron A magnetron has an anode 3 surrounding a tubular hollow cathode 4 which contains a heater 9. The cathode is supported by radial arms at each end. At one end of the cathode, the heater is supplied with one terminal of its D.C. supply by means of ... | 03/06/2012 |
| 8004199 | Method for powering a control circuit for a gas discharge lamp during pre-heating of said lamp, and a device for performing said method The method according to the present invention relates to controlling a gas discharge lamp during a pre-heating period of said lamp, wherein a first terminal of a control circuit is connected with a first electrode of the lamp and a second terminal of a control circu... | 08/23/2011 |
| 7834552 | Controlling a lamp ballast A method and apparatus for providing electrical current to a lamp, detecting a power supply voltage outage, detecting a return of the power supply voltage, determining how long the power supply voltage outage lasted, and preheating the lamp responsive to determining... | 11/16/2010 |
| 7635953 | Insulation detection power supply and electronic ballast A power supply for an insulation detector having a heating element and a temperature sensitive switch thermally coupled to the heating element, the power supply including a power circuit 120 operable to provide heating element power 102 to the heating ... | 12/22/2009 |
| 7629750 | Lamp driving device and driving method thereof A lamp driving device includes a switch circuit for supplying a signal; a transformer which boosts a voltage of the signal from the switch circuit and supplies the boosted voltage to at least one lamp; a safety circuit which compares a threshold value with at least ... | 12/08/2009 |
| 7589472 | Electronic ballast with lamp type determination The electronic ballast with lamp type determination for an electronic ballast providing power to a lamp filament 208 includes a filament current sensing circuit 220 operably connected to the lamp filament 208 and generating a sensed filament cur... | 09/15/2009 |
| 7560867 | Starter for a gas discharge light source A starter for a gas discharge light source is configured to measure an initial resistance of one or more filaments of the gas discharge light source, such as a fluorescent light, each time the gas discharge light source is initially powered via a ballast. The starte... | 07/14/2009 |
| 7560868 | Ballast with filament heating and ignition control A ballast (10) for powering at least one gas discharge lamp (70) having heatable filaments (72,74) includes an inverter (200), a resonant output circuit (400) coupled between inverter (200) and lamp (70), and a filame... | 07/14/2009 |
| 7429826 | Indirectly heated electrode for gas discharge tube, gas discharge tube using said indirectly heated electrode, and lighting device for said gas discharge tube An indirectly heated cathode C1 comprises a heater 1, a double coil 2, a mesh member 3, and a metal oxide 10. An electrical insulating layer 4 is formed on the surface of heater 1. Heater 1 is inserted into and... | 09/30/2008 |
| 7391041 | Germicidal UV reactor and UV lamp A germicidal UV reactor for use in fluid purifiers is provided, in which the UV reactor comprises an UV lamp with an UV transparent primary envelope and also an UV transparent secondary envelope around the primary envelope. The outer surface of the secondary envelop... | 06/24/2008 |
| 7368916 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 05/06/2008 |
| 7339322 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the ga... | 03/04/2008 |
| 7336039 | Driving device for discharge lamps A driving device for driving discharge lamps (14) includes a first pulse circuit (11), a second pulse circuit (13), and a primary driving circuit (12). The first pulse circuit includes an input end, a first output end (1), and a se... | 02/26/2008 |
| 7323877 | Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps Apparatus and methods are disclosed for measuring cathode fall within a fluorescent lamp that contains an electrode and a gas. A level of cathode fall associated with the electrode may be identified based on an intensity and wavelength of radiation emitted by the ga... | 01/29/2008 |
| 7318908 | Integrated nanotube sensor Integrated nanotube sensors are adapted for detecting various chemical and biological molecules. In one implementation, nanotube sensor arrays are formed as nano-electronic noses capable of such detection, and can be implemented in devices including carbon nanotube-... | 01/15/2008 |
| 7284878 | Lumen regulating apparatus and process The present invention is a fluorescent light lumen regulating apparatus. More specifically, in one aspect, the present invention is a fluorescent lighting assembly for mounting at least one fluorescent lamp. In this aspect, the lighting assembly comprises a lamp hou... | 10/23/2007 |
| 7279844 | Electronic ballast The invention relates to a ballast for low-pressure discharge lamps, comprising a controllable inverter circuit for the generation of a high-frequency supply voltage for a discharge lamp (1), a lamp inductance (L1) connected to the inverter circuit... | 10/09/2007 |
| 7269017 | Thermal management of surface-mount circuit devices on laminate ceramic substrate A circuit board assembly with a substrate having a laminate construction of ceramic layers, such as an LTCC ceramic substrate. The substrate is configured for the purpose of improving the thermal management of power circuit devices mounted to the substrate. Thermall... | 09/11/2007 |
| 7259519 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 08/21/2007 |
| 7256549 | Three electrode arc-discharge lamp A method of operating an arc discharge lamp that has first and second electrodes is described. First, the first electrode is heated with a third electrode with a first arc until the first electrode temperature is sufficiently elevated to allow for thermionic emissio... | 08/14/2007 |
| 7247863 | System and method for rapidly controlling the output of an ion source for ion implantation An apparatus and a method are disclosed for rapidly controlling the rate of ion generation in an ion source. The ion source includes an ion chamber, filament-cathode, a mirror electrode, and a grid. The ion source is operable to generate an ion beam from the ionizat... | 07/24/2007 |
| 7224124 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 05/29/2007 |
| 7196476 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 03/27/2007 |
| 7196478 | Circuit arrangement A driver for driving a gas discharge lamp includes an inductive ballast implemented as auto-transformer having a central tap, connected between one output terminal and a first input terminal, and a triac connected between a second output terminal and a second input ... | 03/27/2007 |
| 7193367 | Indirectly heated electrode for gas discharge tube, gas discharge tube with this, and its operating device An indirectly heated cathode C1 comprises a heater 1, a double coil 2, a mesh member 3, and a metal oxide 10. An electrical insulating layer 4 is formed on the surface of heater 1. Heater 1 is inserted into and... | 03/20/2007 |
| 7187132 | Ballast with filament heating control circuit A ballast (10) for powering at least one gas discharge lamp (20) having lamp filaments (22,24) comprises an inverter (200), an output circuit (300), a filament heating control circuit (400), and a dimming control circuit ( | 03/06/2007 |
| 7180248 | Inductively coupled ballast circuit A ballast circuit is disclosed for inductively providing power to a load. The ballast circuit includes an oscillator, a driver, a switching circuit, a resonant tank circuit and a current sensing circuit. The current sensing circuit provides a current feedback signal... | 02/20/2007 |
| 7144290 | Discharge lamp with stabilized discharge vessel plate The invention relates to a new design of discharge vessel for a discharge lamp, in which dielectrically impeded discharges are to be generated. In this case, a discharge vessel plate 1, 9 is, as it were, of two-fold design, specifically as a first discharge v... | 12/05/2006 |
| 7137096 | Interconnect structure of a chip and a configuration method thereof A chip has a power bus, a first metal layer and a plurality of internal electronic circuits. The first metal layer has a plurality of power lines which are substantially parallel and electrically connected to the power bus in parallel for delivering electrical power... | 11/14/2006 |
| 7070472 | Field emission display and methods of forming a field emission display A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate (12) having a deformation temperature that is less than about six hundred and fi... | 07/04/2006 |
| 7063431 | Resistive bubble lamp structure A resistive bubble lamp structure is disclosed and claimed, which comprises a vacuum glass tube containing liquid CH2Cl2 with a low boiling point and a circuit mounted at the bottom end of the vacuum glass tube and externally connected to a pow... | 06/20/2006 |
| 7063583 | Multi-spectral uniform light source A multi-spectral uniform light source provides a single light source for a variety of applications. The gas or gases inside the light source may be exchanged for another gas or gases depending on the desired application and need for a particular wavelength of emitte... | 06/20/2006 |
| 7061173 | Amalgam-doped low mercury low-pressure UV irradiator A UV lamp unit is provided and comprises a lamp in the form of a mercury low pressure amalgam lamp that is provided with at least one amalgam deposit. A cladding tube surrounds the lamp in such a way that an air gap is provided between the lamp and the cladding tube... | 06/13/2006 |
| 7057611 | Integrated power supply for an LCD panel The present invention provides an integrated LCD panel power supply formed on a single printed circuit board. The integrated power supply includes at least one DC/AC control unit, at least one DC/DC buck converter unit and at least one DC/DC boost control unit. Each... | 06/06/2006 |
| 7049738 | Amalgam low pressure mercury UV lamp A UV lamp unit includes a lamp in the form of a mercury low pressure amalgam lamp that is provided with at least one amalgam deposit. A cladding tube surrounds the lamp in such a way that an air gap is provided between the lamp and the cladding tube. An element is p... | 05/23/2006 |
| 7051290 | Graphical interface for receiving eyeglass prescription information A high volume lens curing system is described. The high volume lens curing system is configured to cure multiple eyeglass lenses in a continuous manner. The lens curing system includes a computer-implemented method configured to collect prescription information, sav... | 05/23/2006 |
| 7034465 | Device for operating discharge lamps by means of a transformer with four windings, and a corresponding method A device for operating a plurality of discharge lamps is to be fashioned cost-effectively. Consequently, two discharge lamps (71, 72) are operated with the aid of one ballast in whose load circuit the heating current for the individual incandescent filaments ... | 04/25/2006 |
| 7034543 | Method of predicting a lifetime of filament in ion source and ion source device An ion source device includes an ion source having a filament for emitting thermoelectrons, a current measuring device for measuring current flowing through the filament, a voltage measuring device for measuring voltage across the filament, a resistance operation de... | 04/25/2006 |
| 7026590 | Low-output microwave, lighting system and flicker removing method using the same A low-output microwave lighting system includes: a rectifier for rectifying general AC power inputted through a power source unit and outputting a DC voltage; a power factor compensator for compensating a power factor of the DC voltage inputted through the rectifier... | 04/11/2006 |
| 7002301 | Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps Apparatus and methods for measuring cathode fall in fluorescent lamps are disclosed. Together with measurements of cathode temperature, such measurements of cathode fall may inform a determination of cathode heater voltage as a function of discharge current (i.e., a... | 02/21/2006 |
