Arkansas Power Electronics International, Inc.

Munters Corporation

Cree Fayetteville, Inc.

Edgar Cilio

Bryon Western

Roberto Marcelo Schupbach

Jared Hornberger

Alex Lostetter

Brad Reese

Washington Cilio

Sharmila Mounce

A method and system can measure the weight of a bulk material within a container by applying excitation in the form of vibrational energy and interpreting the container's response to the vibration.

Method and apparatus to non-intrusively measure the weight of loose bulk material within a rigid containing structure

The novel cell balancing approach being disclosed minimizes the number of controlled active devices to enable Li-ion cell balancing in a battery arrangement. This is accomplished through a network of passive components associated with each cell. The network of passive components forms a bandpass filter. This allows selective charging of a cell purely based on the frequency components of a variable switching frequency controller.

Multi-module, scalable, high power density, radiation-hardened power converter interface system

The present invention is directed to a coupled inductor output filter to be used with DC/DC switched mode power supply topologies. This new output filter changes the inherent power sharing capability of most DC/DC converter topologies, enabling the overall converter to operate as a truly modular block with no inter-module communication required to accomplish power/current sharing on a multi-module configuration. The coupled-inductor output filter uses a split inductor, Loutand Lout, a main output capacitor, Cout, and a DC blocking capacitor, CDC Block.

Coupled inductor output filter

A direct drive cascode using a gate signal driven D-mode JFET connected in series with a power-enable-signal driven E-Mode JFET to provide a quick-operation high-temperature normally-off cascode configuration with low noise characteristics. The E-mode JFET may have the E-mode gate connected to ground with a pull down power element or resistor.

Normally-off D-mode driven direct drive cascode

High temperature gate driving circuits with improved noise resistance and minimized loss are implemented with high temperature components with a reduced size magnetic isolation transformer. Input broad-pulse width modulated signals are converted to offsetting narrow pulses to cross the reduced size magnetic transformer minimizing isolation losses. One embodiment teaches time and voltage offset narrow single pulses that control a set and reset regeneration of the pulse width output on the secondary side of the transformer. Another embodiment teaches multiple concurrent voltage offset pulses to cross the transformer and charge a threshold capacitor for both filtering noise and controlling the pulse width regeneration on the secondary side of the transformer.

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Farmington, AR, United States of America

Edgar Cilio