Abstract: A software controlled electronic dimming ballast for preheating, striking, and varying the dimming level of a lamp. In one embodiment, the ballast includes an EMI filter circuit, an AC/DC converter circuit, a PFC circuit, an inverter circuit, and a software controlled microcontroller circuit. The microcontroller circuit includes a microcontroller and software for generating inverter control signals that cause the inverter circuit to preheat, strike, and varying the dimming level of the lamp. The inverter control signals are generated based on dimming control and lamp dimming level feedback signals. The ballast also includes a lamp dimming level feedback signal conditioning circuit for generating the lamp dimming level feedback signals. Alternative embodiments of the ballast are also described.

Abstract: A software controlled electronic dimming ballast for preheating, striking, and varying the dimming level of a lamp. In one embodiment, the ballast includes an EMI filter circuit, an AC/DC converter circuit, a PFC circuit, an inverter circuit, and a software controlled microcontroller circuit. The microcontroller circuit includes a microcontroller and software for generating inverter control signals that cause the inverter circuit to preheat, strike, and varying the dimming level of the lamp. The inverter control signals are generated based on dimming control and lamp dimming level feedback signals. The ballast also includes a lamp dimming level feedback signal conditioning circuit for generating the lamp dimming level feedback signals. Alternative embodiments of the ballast are also described.

Abstract: The present invention is directed toward a laminate composite structure and a method for fabricating a laminate composite structure, wherein the laminate composite structure comprises a solid laminate and a composite sandwich structure. The solid laminate includes a bend having composite pins inserted there through. The composite sandwich structure is comprised of a core material sandwiched between top and bottom composite face sheets.

Abstract: An on-board diagnostic (OBD) scan tool device is provided with a current sense disconnect to enable vehicular installation of the device whereby the device automatically senses the connection of another device to an OBD communications bus and prevents communication errors by disconnecting from the bus. The device prevents communication conflicts on an OBD bus that ordinarily occur when two OBD scan tools attempt to communicate on the same bus. The device includes a sense circuit to determine when another device is attached to the bus. When another device is sensed, switching components are used to disconnect transceivers from the OBD bus. Furthermore, virtually seamless integration into existing OBD systems is possible through the use of a Y-cable.

Abstract: An electronic ballast includes open circuit voltage regulation comprises an filament current sensing circuit 224 operably connected to an output of the electronic ballast and generating a sensed output voltage signal, and a regulating pulse width modulator U3 receiving the sensed output voltage signal and operably connected to control voltage at the output of the electronic ballast, the regulating pulse width modulator U3 having an output voltage threshold limit. The regulating pulse width modulator U3 limits the voltage at the output of the electronic ballast when the sensed output voltage signal exceeds the output voltage threshold limit. The regulating pulse width modulator U3 can limit the output voltage by limiting the pulse width to the high voltage driver and the resonant half bridge. The filament current sensing circuit 224 can sense the output voltage indirectly, such as by sensing tank current, or can sense the output voltage directly.

Abstract: A software controlled electronic dimming ballast for preheating, striking, and varying the dimming level of a lamp. In one embodiment, the ballast includes an EMI filter circuit, an AC/DC converter circuit, a PFC circuit, an inverter circuit, and a software controlled microcontroller circuit. The microcontroller circuit includes a microcontroller and software for generating inverter control signals that cause the inverter circuit to preheat, strike, and varying the dimming level of the lamp. The inverter control signals are generated based on dimming control and lamp dimming level feedback signals. The ballast also includes a lamp dimming level feedback signal conditioning circuit for generating the lamp dimming level feedback signals. Alternative embodiments of the ballast are also described.

Abstract: A solar power system includes an enclosure (230) for a power converter (120) that can be mounted adjacent to the solar panel (110), wherein the enclosure (230) is configured to allow a substantial air space (240) between the solar panel (110) and the power converter (120). The surface (232) of the enclosure (230) that is exposed to the solar energy comprises highly solar-irradiation-resistant material, to minimize the solar heating of the power converter (120), and vents (231) are provided in the enclosure (230) to facilitate airflow through the air space (240). Preferably, a thermal efficient housing (250) is provided to contain the power converter (120), to facilitate the transfer of heat from the power converter (120) to the air space (240). The housing (250) may also be configured to be weather-tight, to protect the components of the power converter (120).

Abstract: The present invention is directed toward a laminate composite structure and a method for fabricating a laminate composite structure, wherein the laminate composite structure comprises a solid laminate and a composite sandwich structure. The solid laminate includes a bend having composite pins inserted there through. The composite sandwich structure is comprised of a core material sandwiched between top and bottom composite face sheets.

Abstract: A device and method for engaging a rounded knob so that the knob can be turned in a more rapid and ergonomically efficient manner. The claimed invention includes an auxiliary handle device. The auxiliary handle device includes a hub and a handle that extends radially away from the hub. The hub is configured to pass over the exterior of the rounded knob. Once the hub envelopes the rounded knob, the handle is rotated. As the handle is rotated, an interference fit is created between the interior of the hub and the knob. The interference fit transfers the rotational energy from the handle to the rounded knob, thereby rotating the rounded knob.