Manufacturing Industry
Ceramic Device Makes Small Transformers Efficient.(Brief Article)
Assembly, March, 2000
BOSTON--Thinner laptop computers and flat-screen televisions may be possible with a simple change in the geometry of piezoelectric transformers.
By changing the shape of transformers from rectangular to circular, researchers at Pennsylvania State University have developed a method to increase the conversion ratio of the devices without adding volume or weight.
"Conventional electromechanical transformers are big, very heavy and produce a great deal of magnetic noise," says Kenji Uchino, Ph.D., professor of electrical engineering at Penn State. "Rectangular piezoelectric ceramic transformers have been used in laptop computers since 1994. Our circular configuration, made with improved materials, opens the way for more powerful, lightweight...
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