The authors were originally brought together to share research and applications through the international Danfoss Professor Programme at Aalborg University in Denmark.
Personal computers would be unwieldy and inefficient without power electronic dc supplies. Portable communication devices and computers would also be impractical. High-performance lighting systems, motor controls, and a wide range of industrial controls depend on power electronics. In the near future we can expect strong growth in automotive applications, dc power supplies for communication systems, portable applications, and high-end converters. We are approaching a time when all electrical energy will be processed and controlled through power electronics somewhere in the path from generation to end use.
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Loser in one world, hero in another, Edwin Spencer pines for the life he left behind in Hysteria. When he finds what seems to be an ancient Hysterian relic nestled in a box in his loft, Edwin is only too happy to use it as an excuse to get away from his brainiac siblings.

School loser Edwin Spencer is summoned back to Hysteria on a special, secret, request by Prince Auvlin. Ever keen to help out their Hysterian friends, Edwin and school swot Perpetua jump into the vortex once more. But it seems Prince Auvlin is not telling them everything - in fact, he's behaving very strangely.