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| Number | Title | Issue Date |
| 8120267 | Light emitting diode driving circuit A LED driving circuit includes a bridge rectifier, a high-bias-voltage diode, a balancing capacitor, a driving chip, and a switch. The bridge rectifier receives external AC power and outputs a full-wave or half-wave AC power. One terminal of the high-bias-voltage di... | 02/21/2012 |
| 8067895 | Lamp adapter The present invention provides a lamp adapter, including a first adapter, a second adapter and a short-circuit. These two adapters are separately coupled between two incoming ends of T5 lamp and T8 socket. The first adapter contains a circuit board, and the second a... | 11/29/2011 |
| 8035309 | Light emitting device A light emitting device includes an electronic driver and a planar light emitting element. The driver is connected with a source and the light emitting element, where the light emitting element has an internal capacitance and is connected to the driver in such a way... | 10/11/2011 |
| 7688001 | Method and system for providing a charge pump for low voltage applications A method and system for providing an output voltage greater than a voltage provided by a voltage supply in a semiconductor device are disclosed. The method and system include providing at least one oscillator and at least one voltage storage/discharge stage coupled ... | 03/30/2010 |
| 7423385 | System and method for controlling voltage on discharge capacitors which control light energy from flash lamps A system and method are described for controlling voltage on discharge capacitors which control light energy from flash lamps, wherein the method includes measuring over time an operational behavior of a flash lamp for performing photothermolysis, wherein a discharg... | 09/09/2008 |
| 7394206 | Electronic ballast with life-ended protection An electronic ballast includes a rectifier and filter circuit, a DC/AC inverter circuit and a resonant circuit. An input of the rectifier and filter circuit is connected to an outside power supply, its output is connected to the inputs of DC/AC inverter circuit, an ... | 07/01/2008 |
| 7375471 | Charging circuit A charging circuit has a battery 12, switching element 14, and resistor 16 for current detection arranged on the primary side of transformer 10. Diode 18 and capacitor 20 for storing electric power are arranged on the second... | 05/20/2008 |
| 7372216 | Constant brightness control for electro-luminescent lamp A ballast (11) includes a variable output DC converter source (12) and an inverter circuit (14) arranged to provide AC output voltage to an electro-luminescent (EL) lamp (16). A Q factor of EL lamp can characterize the age of the EL lamp.... | 05/13/2008 |
| 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 |
| 7333004 | Self-adjusting strobe A strobe unit responds to a selected candela output by selecting an optimal capacitor charging frequency to minimize current requirements at the selected candela output. A plurality of charging frequencies can be stored and associated with available input power and ... | 02/19/2008 |
| 7321004 | Method for photo-curing polymerizable compositions A method for curing polymerizable compositions by irradiating the compositions with light that is emitted from an LED. The method of the present invention is especially preferred for curing dental compositions. ... | 01/22/2008 |
| 7314350 | Energy store circuit for controlling rotor rotation A fan controller for controlling the rotation of a rotor (with a fan blade) has a current limiting element to control current flow to a capacitive storage apparatus. More specifically, the fan controller has an input for receiving an input voltage, the noted capacit... | 01/01/2008 |
| 7242314 | Strobe unit with current limiter A variable output strobe unit includes a variable current limiting circuit to limit peak current draw after each flash. Parameters of strobe output and current limiting circuit are related and can be set manually or electronically. ... | 07/10/2007 |
| 7236164 | Display device In a display device in accordance with the present invention, each pixel includes a plurality of luminescent elements having different luminous intensities to represent gray scales by controlling the turning ON/OFF of the luminescent elements. A digital signal is tr... | 06/26/2007 |
| 7235931 | Discharge lamp lighting apparatus for lighting multiple discharge lamps In a discharge lamp lighting apparatus to light two discharge lamps, one terminal of the secondary side of a step-up transformer is connected to one terminal of each of the two discharge lamps, the other terminal of each of the two discharge lamps is connected, via ... | 06/26/2007 |
| 7221100 | Gas discharge lamp power supply An apparatus for providing power to a gas discharge lamp comprises a storage capacitor and an ignition switch coupled through a primarily parasitic first inductor to a parallel combination of a diode assembly and a second inductor in series with a gas discharge lamp... | 05/22/2007 |
| 7209819 | Drive circuit for a firing cap of a vehicle restraint system A drive circuit for a firing cap, triggerable by an electric direct current firing pulse, of a vehicle restraint system, has a firing circuit which forms a series connection of a high side switch to the firing cap and to a low side switch. The firing circuit is conn... | 04/24/2007 |
| 7190124 | Two-wire dimmer with power supply and load protection circuit in the event of switch failure A dimmer circuit provides AC power to an inductive lighting load in series with the dimmer circuit. A bidirectional semiconductor switch has a control electrode with a control signal for determining the power provided to the load. The switch in normal operation is c... | 03/13/2007 |
| 7145762 | Systems and methods for immobilizing using plural energy stores An electronic disabling device includes first and second electrodes positionable to establish first and second spaced apart contact points on a target having a high impedance air gap existing between at least one of the electrodes and the target. The power supply ge... | 12/05/2006 |
| 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 |
| 7049760 | Camera flash circuit using a piezoelectric transformer to trigger firing of the camera flash tube A camera flash circuit employing a piezoelectric transformer in the flash trigger circuit, the piezoelectric transformer having input terminals coupled to the main flash voltage storage capacitor and an output terminal coupled to the flash trigger terminal on the fl... | 05/23/2006 |
| 7042167 | Back light device for liquid crystal displays Disclosed herein is a back light device for LCDs. The back light device includes an inverter to supply an alternating current or a pulse, a plurality of fluorescent lamps to radiate visible light, a reflection member to reflect the light radiated from the fluorescen... | 05/09/2006 |
| 7019619 | Power line warning light apparatus A power line warning light apparatus is installed on power lines (electric power transmission lines), and uses the electro-magnetic coupled power from the power line to generate a periodical flashing light as a warning signal to the nearby flying vehicles to prevent... | 03/28/2006 |
| 6965203 | Method and circuit for repetitively firing a flash lamp or the like Disclosed is a method and circuit for repetitively firing a flash lamp. The method utilizes a power supply having a periodic voltage signal. The method times the discharge of the flash lamp to occur when the power supply signal is below the flash lamp self extinguis... | 11/15/2005 |
| 6960891 | Direct-type back light device The object of this invention is to provide a direct-type back light device, capable of maintaining uniform luminance, and reducing manufacturing costs and power consumption, in addition to being easy to assemble and to accomplish thinness. The back light device incl... | 11/01/2005 |
| RE38837 | Efficient power transfer in electronic ballast An electronic ballast for one or more F32T8 or F25T8 or F1718 fluorescent lamps has a new design tool for efficient transfer of power to the lamp or the lamps. The design tool is constructed from the ballast DC voltage and the commercially available lamp specificati... | 10/18/2005 |
| 6909248 | Deuterium arc lamp assembly with an elapsed time indicator system and a method thereof A lamp system includes a light source and an elapsed time indicator system which is coupled to the light source. The elapsed time indicator system accumulates a count of elapsed time of operation of the lamp system. The count provides an indication of a life span of... | 06/21/2005 |
| 6906472 | Articles with flashing lights Illuminating devices may be added to clothing and accessories worn by persons. Articles to which the illuminating devices may be added include footwear, hair-control articles, belts, suspenders, backpacks, purses, book-bags, vests and the like. The illuminating devi... | 06/14/2005 |
| 6870325 | Led drive circuit and method An LED drive circuit is disclosed, comprising an electronic controller which is arranged to monitor LED current as a first input. The controller also receives a second input from a sensor associated with the LED. The controller serves to monitor, based on its inputs... | 03/22/2005 |
| 6831423 | High Q impedance matching inverter circuit with automatic line regulation An inverter circuit includes an input section configured to receive voltage from a voltage source and to input the voltage to the circuit. A switching network is connected to receive the input voltage from the input section. A controller controls operation of the sw... | 12/14/2004 |
| 6798142 | Flash emitting device and radiant heating apparatus In a flash emitting device, a flash from the plurality of flash discharge lamps is emitted on a work piece. The flash emitting device has a plurality of flash discharge lamps arranged in parallel including side flash discharge lamps located on sides of the flash emi... | 09/28/2004 |
| 6774576 | Switch mode energy recovery for electro-luminescent lamp panels High voltage and low voltage switch mode circuits and methods serve to recover the charge stored on electro-luminescent lamp panels that would otherwise be dissipated during the discharge cycle of a drive circuit. The high voltage circuits and methods operate to tra... | 08/10/2004 |
| 6719753 | Means and method for energizing a flash lamp A method and structure for energizing a flash lamp for producing a high energy light pulse, with the flash lamp energized by a flattened and extended current pulse. The method includes collecting and storing energy for delivery to the flash lamp when triggered. A tr... | 04/13/2004 |
| 6672738 | Decorative ornament The invention relates to a decorative ornament. The ornament includes a circuit board shaped in an aesthetically desirable manner to provide a background for the decorative ornament, a plurality of light sources, an integrated circuit and circuit leads be... | 01/06/2004 |
| 6603273 | Fast accelerating flow generator power supply Methods and apparatus for the supply of non-invasive positive pressure ventilation by motor-driven blowers, and having fast acceleration between treatment pressures, are described. A blower (12) supplies treatment pressure of air or breathable gas to a pa... | 08/05/2003 |
| 6593705 | Rapid-firing flashlamp discharge circuit A flashlamp circuit includes a charge reservoir that receives a first voltage from an external source. The charge reservoir is coupled to a resonator and a plurality of discharge capacitors to provide a second voltage to the plurality of discharge capacit... | 07/15/2003 |
| 6590349 | Bidirectional flip-flop A bidirectional switch, including a first bidirectional switch between two power terminals of the switch, a low-voltage storage element between a first power terminal and a control terminal of the switch, and a control stage adapted to cause, upon each ha... | 07/08/2003 |
| 6566822 | Electronic circuits for detecting filament breakage in gas discharge lamps Disconnection device for an electronic operating device for gas discharge lamps. The DC component is evaluated at a coupling capacitor (C5) specifically via a filament. Disconnection is performed in the event of filament breakage. In addition, the AC comp... | 05/20/2003 |
| 6509695 | Flash apparatus and camera having the flash apparatus In a flash apparatus, when it is determined that the oscillation of a voltage boosting circuit is stopped before it is controlled so as to stop, it is possible to continuously charge a voltage to a main capacitor by causing the voltage boosting circuit to... | 01/21/2003 |
| 6461348 | Photo-thermal epilation apparatus with advanced energy storage arrangement A photo-thermal epilation apparatus enables the efficient delivery of a high energy light pulse of a sufficiently short duration to a selected follicle to effect permanent hair removal. The apparatus includes a flash lamp powered by a power supply module ... | 10/08/2002 |
