Abstract: A fast starting induction RF fluorescent lamp capable of changing illumination level through a burst-mode dimming facility, comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a control signal, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase

Abstract: An electronic ballast for driving a gas discharge lamp includes an EMI filter, a bridge rectifier coupled to a DC bus without a conventional electrolytic capacitor, a passive valley fill circuit built as a network having 4 charge/discharge energy storage capacitors and 9 diodes (4C9C), and a resonant DC to AC high frequency inverter for powering gas discharge lamp. The 4C9D circuit divides the rectified peak voltage by four and the low output voltage of the circuit is used to provide continuous lamp operation. The result is a ballast having substantially improved power factor, total harmonic distortion, and current crest factor. The electronic ballast is provided with a dimming capability from a TRIAC based wall dimmer.

Abstract: A burst-mode dimmable induction RF fluorescent light bulb that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for a dimmable induction RF fluorescent light bulb that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb.

Abstract: 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.

Abstract: A dimmable induction RF fluorescent lamp comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a signal from an external dimming device, and having a main mercury amalgam having a vapor pressure at room temperature which is higher than the vapor pressure of the mercury amalgam formed on the flag.

Abstract: An induction RF fluorescent lamp, comprising a vitreous envelope filled with a working gas mixture, a power coupler comprising at least one winding of an electrical conductor for receiving an alternating voltage and current to generate an alternating magnetic field and thereby induce an alternating electric field within the lamp envelope, an electronic ballast providing appropriate voltage and current to the power coupler and a main mercury amalgam having a vapor pressure at room temperature which is higher than the vapor pressure of the mercury amalgam formed on the flag.

Abstract: 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.

Abstract: 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.

Abstract: A fast starting dimmable induction RF fluorescent lamp comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a signal from an external dimming device, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase.

Abstract: A high frequency induction RF fluorescent lamp that is able to replace an ordinary incandescent lamp, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent lamp, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes a high frequency electronic ballast, as well as structures for an induction RF fluorescent lamp that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look for the high frequency induction RF fluorescent lamp that is similar to the profile of an ordinary incandescent lamp.

Abstract: 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.

Abstract: A dimmable high frequency induction RF fluorescent lamp, comprising a bulbous vitreous portion filled with a working gas mixture, a power coupler comprising at least one winding of an electrical conductor for receiving an alternating voltage, and an electronic ballast providing appropriate voltage and current to the power coupler and operating at a frequency greater than 5 MHz, wherein the electronic ballast comprises a dimming facility for dimming the lamp from an external dimming device.

Abstract: A fast starting induction RF fluorescent lamp that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for an induction RF fluorescent lamp that includes a bulbous portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb, and with structures within the bulbous portion that facilitate rapid luminous development during the turn-on phase of the induction fluorescent lamp.

Abstract: An induction RF fluorescent lamp configuration provides reduced EMI, including a lamp envelope with a re-entrant cavity both covered on the 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.