Patent application number | Description | Published |
20090289572 | IGNITION FOR CERAMIC METAL HALIDE HIGH FREQUENCY BALLASTS - A high frequency ballast for a metal halide lamp comprises a controller, a switch, and an oscillator. The controller selectively enables and disables the oscillator via the switch to ignite the lamp. The switch is in a power supply loop of the oscillator and selectively open circuits and close circuits the power supply loop. When the switch close circuits the power supply loop, the oscillator oscillates and provides power to the lamp. When the switch open circuits the power supply loop, the oscillator does not oscillate and does not provide power to the lamp. | 11-26-2009 |
20140145594 | FAST START INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - A fast starting induction RF fluorescent lamp comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase. | 05-29-2014 |
20140145603 | INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - An induction RF fluorescent lamp that is able to replace an ordinary reflector-type incandescent lamp, both in its ability to screw into a standard incandescent lamp socket and to have the general look of the ordinary reflector incandescent lamp, but with all of the advantages of an induction lamp, and comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler. | 05-29-2014 |
20140145605 | HIGH FREQUENCY INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - A high frequency induction RF fluorescent lamp comprising an electronic ballast operating at greater than 5 MHz and a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler. | 05-29-2014 |
20140145609 | RF INDUCTION LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - An induction RF fluorescent lamp configuration providing reduced EMI includes a lamp envelope with a re-entrant cavity both covered on a partial vacuum side with phosphor and filled with a working gas mixture, a tubular ferromagnetic core on the non-vacuum side said re-entrant cavity wound directly on the said core with two windings having different numbers of turns, a first active winding having one end connected to an RF ballast and the other end connected to local ground, and a second passive winding having one end grounded and the other end free. | 05-29-2014 |
20140145613 | ARRANGEMENTS AND METHODS FOR TRIAC DIMMING OF GAS DISCHARGE LAMPS POWERED BY ELECTRONIC BALLASTS - An apparatus for powering and TRIAC dimming of a gas discharge lamp includes an electronic ballast for powering a gas discharge lamp from a TRIAC based dimmer connected to an AC line, an EMI filter for protecting the AC line from EMI generated by the ballast and the lamp, a DC bus without a smoothing electrolytic capacitor, a resonant DC-to-AC inverter connected to the DC bus for powering the gas discharge lamp with a high frequency current, wherein an auxiliary DC-to-DC power supply input is connected to the DC bus and a first resonant tank having in series a first resonant inductor and a first resonant capacitor, wherein the gas discharge lamp is connected in parallel to the resonant capacitor. | 05-29-2014 |
20140145616 | REDUCED EMI IN RF INDUCTION LAMP WITH FERROMAGNETIC CORE - An induction RF fluorescent light bulb comprising a power coupler with a ferromagnetic core and conductive material in contact with the ferromagnetic core to reduce extraneous electromagnetic radiation emanating from the power coupler, where the RF fluorescent light bulb has an external appearance similar to an ordinary A19 incandescent light bulb. | 05-29-2014 |
20140145617 | DIMMABLE INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - A dimmable induction RF fluorescent light bulb comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler. | 05-29-2014 |