from the now-multiply-by-a-few-million dept.
AmiMoJo writes: A few summers ago, Google and IEEE announced a one million dollar prize to build the most efficient and compact DC to AC inverter. It was called the Little Box Challenge, with the goal of a 2kW inverter with a power density greater than 50 Watts per cubic inch. Typical solar inverters have a density of about 5 W/cubic inch. Now the results are in, with the winners hitting 143 W/cubic inch using GaN transistors, and two other teams meeting Google's goal.
"If you lived today as if it were your last, you'd buy up a box of rockets and
fire them all off, wouldn't you?"
-- Garrison Keillor