Other

Innosys, Inc.

Sandia Corporation

University of Utah Research Foundation

Pageant Technologies, Inc.

Innovate, LLC

Estancia Limited Providencials

Laurence P Sadwick

Ruey-Jen Hwu

Mohammad Mehdi Mojarradi

William B Sackett

Jishi Ren

Jehn-Huar Chern

Donald B King

Bernard R Wernsman

Richard Michael Lienau

R Jennifer Hwu

Neil J Barabas

Paul P Lee

J Mark Baird

Ding Wu

Michael D Brady

Sherman Holmes

Ching-Hsi Lin

A solid-state light replacement includes a housing, a pair of electrical connections on the housing, a substrate within the housing and dividing the housing into at least two sections, at least one solid state light mounted to the substrate in one of the at least two sections and electrically connected to the pair of electrical connections, and at least one solid state installation error indicator light mounted to the substrate in another of the at least sections and electrically connected to the pair of electrical connections in an opposite polarity from the connection of the at least one solid state light to the pair of electrical connections.

Solid state lighting driver and lamp replacement for avionics ballast and fluorescent lamp

A digital dimmable driver system includes an alternating current input, a dimmer operable to perform a phase cut operation on a waveform from the alternating current input, a driver circuit operable to switch from a dimming mode to a universal voltage input mode based on a phase angle of the dimmer, and a power output operable to power a light.

Digital dimmable driver

A dimming system includes an alternating current input, a reference crossing detector operable to detect when a signal derived from the alternating current input crosses a reference level, a ramp signal generator operable to generate a ramp signal with a changing voltage, wherein the ramp signal generator is operable to restart the ramp signal based on an output of the reference crossing detector, a switch operable to control a current derived from the alternating current input to a load output, a switch driver operable to control the switch based at least in part on the ramp signal, and a difference amplifier operable to generate a difference between the ramp signal and an input from a light sensor, wherein the switch driver is operable to control the switch based at least in part on the difference.

Dimmer with motion and light sensing

A power supply includes an alternating current input, a rectifier operable to generate a rectified signal based on the alternating current input, a voltage multiplier operable to generate a multiplied voltage based on the alternating current input, and an output operable to yield an electrical current based on the rectified signal from the rectifier and on the multiplied voltage from the voltage multiplier. The rectified signal from the rectifier is connected to the output when a voltage of the rectified signal is higher than the multiplied voltage, and the multiplied voltage from the voltage multiplier is connected to the output when the multiplied voltage is higher than the voltage of the rectified signal.

Power quality enhancement

Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for controlling power to a load. The apparatus includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.

Low current thyristor-based dimming

An apparatus for supplying power includes a power input, an output driver operable to transfer power from the power input to a load output, an output driver control switch operable to control a current from the power input through the output driver, a pulse generator operable to generate a pulse signal to control the output driver control switch, and a stealer switch operable to disable the pulse signal.

Dimming driver with stealer switch

Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.

LED lamp with remote control

Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an input current path, a switch in the input current path, an energy storage device connected to the input current path, a load output connected to the energy storage device, and a timer-based variable pulse generator connected to a control input of the switch. The timer-based variable pulse generator is adapted to generate a stream of pulses having a variable on-time and off-time. The dimmable power supply is adapted to vary the on-time and off-time to control a current at the load output.

Dimmable timer-based LED power supply

Various embodiments of a vacuum electronic device, a hybrid magnet for a vacuum electronic device and methods of making a hybrid magnet for a vacuum electronic device are disclosed herein. In one embodiment, a hybrid magnet for a vacuum electronic device includes a first magnet, a second magnet positioned in spaced-apart relation with the first magnet and defining a gap between the first magnet and the second magnet, and a non-magnetic spacer positioned in a portion of the gap between the first magnet and second magnet and connected to the first magnet and the second magnet.

Hybrid magnet for vacuum electronic device

Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a controller having at least one current setpoint output, and at least one driver channel circuit connected to the voltage output of the power supply and to at least one of the at least one current setpoint outputs, the at least one driver channel circuit having a load output.

LED dimming driver

A dimming power supply includes a power source, a transformer, a full bridge rectifier and a control switch.

Method and apparatus for supplying and switching power

Various folded waveguides and methods of manufacturing waveguides are disclosed herein. For example, some embodiments provide a method of manufacturing a folded waveguide including machining a plate with a number of registration marks and forming at least one slow wave circuit in at least two halves on the plate. A portion of the registration marks are for the plate and another portion are for the at least one slow wave circuit. The method also includes connecting the at least two halves of the at least one slow wave circuit and machining the at least one slow wave circuit.

Method of manufacturing a folded waveguide

Various embodiments of a fluorescent lamp power supply are disclosed herein. In one embodiment, a power supply includes a power input connected to a pulse generator. The power supply also includes a filter connected to a variable pulse width output on the pulse generator and to the power input. The filter is adapted to substantially block at least one harmonic frequency component of the variable pulse width output and to substantially pass a fundamental frequency component of the variable pulse width output. The power supply also includes a power output connected to the filter, wherein an amplitude at the power output is related to the pulse width at the variable pulse width output.

Fluorescent lamp power supply

Various apparatuses and methods for a vacuum electronic device are disclosed herein. In one embodiment, a vacuum electronic device includes a vacuum housing, an array of slow wave structures inside the vacuum housing sharing a common electron beam tunnel, an electron beam input port at a first end of the common electron beam tunnel, and an electron beam output port at a second end of the common electron beam tunnel.

Vacuum electronic device

Various embodiments of a dimmable power supply are disclosed herein. For example, some embodiments provide a dimmable power supply including an output driver, a variable pulse generator and a load current detector. The output driver has a power input, a control input and a load path. The variable pulse generator includes a control input and a pulse output, with the pulse output connected to the output driver control input. The variable pulse generator is adapted to vary a pulse width at the pulse output based on a signal at the control input. The load current detector has an input connected to the output driver load path and an output connected to the variable pulse generator control input. The load current detector has a time constant adapted to substantially filter out a change in a load current at a frequency of pulses at the variable pulse generator pulse output.

Growing community of inventors

Salt Lake City, UT, United States of America

Laurence P Sadwick