December 26, 2013

TECHNOLOGY: Novel Circuit Shrinks Laptop Chargers, Could Improve Appliance Efficiency. “The power adapter is the first commercial application of a novel circuit design developed by David Perreault, a professor of electrical engineering and computer science at MIT . . . . In addition to shrinking power adapters, the new circuit design could reduce the size and cost of a variety of devices known collectively as power electronics. These devices manipulate electricity, changing properties such as voltage and converting between AC and DC power; they can precisely control the power that goes to electric motors and compressors. Better power electronics can improve the efficiency of, say, household air conditioners, but they typically aren’t used in such applications because of their high cost.”