With the Little Box Challenge, Google (and IEEE, and a few other sponsors like Cree and Rohm) is offering a $1 million prize to the team which can “design and build a kW-scale power inverter with the highest power density (at least 50 Watts per cubic inch).” Going from cooler-sized to tablet sized, they say, would make whole lot of things better, and the prize is reserved for the best performing entrant. https://www.littleboxchallenge.com/

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