Inductive Impedance Connected Between Electrodes Of A Discharge Device Load Patents (Class 315/41)
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Patent number: 10557593Abstract: A replacement light tube for replacing a fluorescent light tube includes a bulb portion extending between a first end and a second end, the bulb portion comprising a support structure, a plurality of white light emitting diodes (LEDs) and an elongate light-transmissive cover. The support structure has a first surface extending between the first end and the second end. The plurality of LEDs are supported by the first surface and arranged between the first end and the second end. The elongate light-transmissive cover extends between the first end and the second end and over the first surface of the support structure. A first end cap and a second end cap are disposed on the first end and the second end, respectively, each configured to fit with a socket for a fluorescent light tube. A power supply circuit is configured to provide power to the plurality of LEDs.Type: GrantFiled: July 30, 2018Date of Patent: February 11, 2020Assignee: iLumisys, Inc.Inventors: Jos Timmermans, Jean C. Raymond, John Ivey
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Patent number: 10499468Abstract: A control circuit for a step dimming circuit includes a first line power lead, a second line power lead, a first relay pole, powered by the first line power lead, for switching power from the first and second line power leads to a power supply line, a second relay pole powered by the first line power lead and connected to a first control lead, a third relay pole powered by the second line power lead and connected to a second control lead and connected to the second relay pole, where the second and third relay poles are configured to connect the first and second control leads together when only one of the second and third relay poles are powered, and where the second and third relay poles are configured to disconnect the first and second control leads when both of the second and third relay poles are powered.Type: GrantFiled: January 15, 2019Date of Patent: December 3, 2019Assignee: CURRENT LIGHTING SOLUTIONS, LLCInventors: Jeffrey Glenn Felty, Kevin Andrew Candow
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Patent number: 9041291Abstract: A band pass filter comprises an air filled aluminum chamber, having a lid and a cuboid resonant cavity having a central iris. At opposite end nodes of the cavity, perfect electric conductors (PECs) are provided. One is connected to a feed wire from an input at one end of the cavity. The other PEC is connected via a further feed wire to a radiator in a fabrication of solid-dielectric, lucent material. Threaded tuning projections opposite the PECs and in the iris are provided, whereby the pass band and the transmission characteristics of the filter in the pass band can be tuned to match the input impedance of the band pass filter and the wave guide to the output impedance of a microwave drive circuit (not shown). Typically the impedance will be 50?.Type: GrantFiled: April 23, 2012Date of Patent: May 26, 2015Assignee: Ceravision LimitedInventors: Andrew Simon Neate, Amjid Sadiq
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Publication number: 20140184064Abstract: An novelly designed gas discharge tube (GDT) comprising at least two electrodes and at least one hollow insulating ring fastened to at least one of the electrodes, wherein the hollow insulating ring has an inductive property or a variable resistance property, thereby the new gas discharge tube can provide another possibility of a circuit design.Type: ApplicationFiled: December 27, 2012Publication date: July 3, 2014Applicant: CHANG GUNG UNIVERSITYInventor: Liann-Be CHANG
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Patent number: 8299711Abstract: A protection circuit is provided for a T8 LED lighting tube, including at least two power transmission connectors and at least two rectification circuits. The power transmission connectors are respectively mounted to opposite ends of the T8 LED tube and each has at least two contacts that are respectively engageable with tube retention connectors formed on opposite ends of a T8 fluorescent light fixture to receive an external AC power. Each rectification circuit is composed of at least one rectifier semiconductor and the two rectification circuits are respectively connected to the contacts of the two power transmission connectors.Type: GrantFiled: September 15, 2010Date of Patent: October 30, 2012Assignee: Azurelighting Technologies, Inc.Inventor: Bailey Chang
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Patent number: 8164264Abstract: A bandpass filter comprises an air filled aluminum chamber having a lid and a cuboid resonant cavity having a central iris. At opposite end nodes of the cavity, perfect electric conductors (PECs) are provided. Threaded tuning projections opposite the PECs and in the iris are provided, whereby the pass band and the transmission characteristics of the filter in the pass band can be tuned to match the input impedance of the band pass filter and the wave guide to the output impedance of a microwave drive circuit. It is mounted on one end of the filter chamber, with an electrodeless bulb in a central cavity directed axially away from the chamber and the radiator in a further cavity set to one side of the central cavity. When the filter is driven, the wave guide resonates driving the bulb.Type: GrantFiled: May 24, 2007Date of Patent: April 24, 2012Assignee: Ceravision LimitedInventors: Andrew Simon Neate, Amjid Sadiq
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Publication number: 20110221343Abstract: A decorative light string with open-circuit-proof and over-current-proof structure includes a plurality of lamp units arranged electrically in series with each other by a power lead. Each lamp unit includes a soft bulb socket, a soft bulb receptacle mounted in the soft bulb socket and a bulb mounted in the soft bulb receptacle. Two conductive wires of the bulb are in contact with two elastic contact plates mounted in said soft bulb socket. The soft bulb socket has a tail plug with a resistor which has approximately equal resistance value to the resistance of said bulb. Two conductive wires of the resistor extend through the tail plug and are attached to lateral sides thereof corresponding to the positions of the two elastic contact plates. The maximum distance between the two conductive wires of the bulb on the bulb receptacle exceeds the maximum distance between two wires of the resistor on the tail plug.Type: ApplicationFiled: December 8, 2009Publication date: September 15, 2011Inventor: Chengju Kuo
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Patent number: 7663321Abstract: An electrical supply device configured to deliver energy to a structure that includes at least two electrodes and a space containing a gas intended to be excited. The device includes a voltage generator, an inductor connected to the generator and connected to the structure to supply the two electrodes with a periodic voltage of given frequency, and a resonance mechanism for fixing the frequency at substantially the resonant frequency of the system of the structure and the inductor.Type: GrantFiled: July 23, 2004Date of Patent: February 16, 2010Assignee: Saint-Gobain Glass FranceInventors: Jingwei Zhang, Guillaume Auday, Didier Duron, Thomas Bertin-Mourot, Philippe Visage
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Patent number: 7323830Abstract: A lighting arrangement having at least one fluorescent lamp comprising a tube that has at least one light emitting region, a high-voltage terminal at a first end of the tube and a low-voltage terminal at a second end of the tube, an electrically conductive surface being arranged adjacent to the light emitting region of the tube that extends at least partly over the length of the tube, a voltage that corresponds at least approximately to the voltage gradient over the tube being applied to the electrically conductive surface.Type: GrantFiled: October 27, 2005Date of Patent: January 29, 2008Assignee: Minebea Co., Ltd.Inventors: Jurgen Adam, Robert Weger
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Patent number: 7088057Abstract: An apparatus, system, and method are disclosed for inducing an electrical current for use by an electronic device. The apparatus includes an inductor and an interface coupling the inductor to an electronic device. The inductor comprises a continuous wire looped spirally, the inductor deriving power from an insulated conductor positioned within the bore of the inductor. The electronic device is substantially wholly energized by the power induced within the inductor. The system includes a non-conductive tube, an arc lamp tube, a light fixture, an inductor, and an interface. The inductor comprises a continuous wire wound spirally around the non-conductive tube, the inductor deriving inductor and is mounted in the light fixture. The light fixture powers the arc lamp tube. The interface couples the inductor to an electronic device.Type: GrantFiled: September 13, 2004Date of Patent: August 8, 2006Assignee: International Business Machines CorporationInventor: Robert Thomas Cato
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Patent number: 6184622Abstract: A fluorescent illuminating apparatus includes a translucent housing with a chamber within which a fluorescent medium is supported and electrical connections configured to provide an electrical potential across the chamber. An inductive-resistive structure is fixed sufficiently proximate to the housing to induce fluorescence in the fluorescent medium when an electric current is passed through the inductive-resistive structure while an electric potential is applied across the electrical connections of the housing. Preferred inductive structures for use with the present invention include elongate tape structures having a substrate with a conductive-resistive coating. A method of inducing fluorescence comprises passing a current through an inductive structure which is adjacent a fluorescing medium in an amount sufficient to induce fluorescent in the fluorescing medium in the presence of an electrical potential imposed on the fluorescing medium.Type: GrantFiled: May 8, 2000Date of Patent: February 6, 2001Assignee: Tapeswitch CorporationInventors: Walter C. Lovell, Edward Duhon, Sheldon B. Brooks, Dana Geiger
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Patent number: 6100653Abstract: A fluorescent illuminating apparatus includes a translucent housing having a chamber within which a fluorescent medium is supported and electrical connections configured to provide an electrical potential across the chamber. An inductive-resistive structure is fixed sufficiently proximate to the housing to induce fluorescence in the fluorescent medium when an electric current is passed through the inductive-resistive structure while an electric potential is applied across the electrical connections of the housing. Preferred inductive structures for use with the present invention include elongate tape structures having a substrate with a conductive-resistive coating. A method of inducing fluorescence comprises passing a current through an inductive structure which is adjacent a fluorescing medium in an amount sufficient to induce fluorescence in the fluorescing medium in the presence of an electrical potential imposed on the fluorescing medium.Type: GrantFiled: December 22, 1998Date of Patent: August 8, 2000Assignee: Tapeswitch CorporationInventors: Walter C. Lovell, Edward Duhon, Sheldon B. Brooks, Dana Geiger
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Patent number: 5834899Abstract: A fluorescent illuminating apparatus includes a translucent housing with a chamber within which a fluorescent medium is supported. The fluorescent medium and housing may be part of an ordinary fluorescent lightbulb. The housing has electrical connections configured to provide an electrical potential across the chamber. An inductive structure is fixed sufficiently proximate to the housing to induce fluorescence in the fluorescent medium when an electric current is passed through the inductive structure while an electric potential is applied across the electrical connections of the housing. It is believed that the inductive structure induces fluorescence by means of an electromagnetic field interaction with either the fluorescent medium, or the ultraviolet-emitting gaseous material, such as mercury, typically contained in a fluorescent lightbulb, or both.Type: GrantFiled: October 16, 1996Date of Patent: November 10, 1998Assignee: Tapeswitch Corporation of AmericaInventors: Walter C. Lovell, Edward Duhon
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Patent number: 4538277Abstract: A gas laser having a metal inlet gas feed line assembly shaped as a coil, to function as an electrical inductance and therefore high impedance to pulses of electric current applied to electrodes at opposite ends of a discharge tube of a laser, for example. This eliminates a discharge path for the laser through the inlet gas feed line. A ferrite core extends through the coil to increase the inductance of the coil and provide better electric isolation. By elimination of any discharge breakdown through the gas supply, efficiency is increased and a significantly longer operating lifetime of the laser is provided.Type: GrantFiled: September 29, 1982Date of Patent: August 27, 1985Assignee: The United States of America as represented by the United States Department of EnergyInventors: William J. Benett, Terry W. Alger
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Patent number: 4456900Abstract: A high frequency coil including an inductance device formed by fitting a pair of electrode caps at both ends of a ferrite magnetic core wound by a winding on a peripheral surface of the core; a heat resistant electric insulating coated layer formed on the peripheral surface of the inductance device and a heat resistant electric insulating resilient tube fitted onto the peripheral surface of the coated inductance device.Type: GrantFiled: May 6, 1981Date of Patent: June 26, 1984Assignees: TDK Electronics Co., Ltd., NGK Spark Plug Co., Ltd.Inventors: Yohtaro Toyoshima, Yasuhiro Sasaki, Minoru Uchida
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Patent number: 4311943Abstract: An arc discharge device such as a fluorescent lamp comprising an outer envelope having an inner phosphor coating. An arc spreading assembly is disposed in said envelope. There is provided a recombination structure in the form of fine glass or quartz fibers disposed in the envelope.Type: GrantFiled: November 13, 1979Date of Patent: January 19, 1982Assignee: Spellman High Voltage Electronics Corp.Inventors: Leo Gross, S. Merrill Skeist