These original Kirt's Cogitations™ may be reproduced
(no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.
here to return to the Table of Contents.
Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted
reflection; meditation; contemplation.
Kirt [kert] – proper noun: RF Cafe webmaster.
Cool Wall Warts
Lots of new technology is being applied to old applications these
days. One such example is a more tolerable replacement for the cursed "wall wart" (AC/DC power adapter) that is on
the way. Penn State researchers have invented a piezoelectric technology that does away with the traditional iron
and copper transformer, and promises to reduce the overall size to a quarter of the existing volume. As a bonus,
these piezo devices produce no appreciable heat and do not generate the EMI fields of electromagnetic
transformers. This new form factor will even allow the entire AC/DC conversion to reside inside your notebook
computer, printer, scanner, camcorder and more. Taiheiyo, of Japan, will begin production in 2005.