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Energy use in cell phones more complex at closer look

Posted: Sun Jan 07, 2007 3:17 pm
by shawn
Recent cell phones, with their video-capture, flash photography, music and broadcast playback, and long talk-times have complex power requirements, and battery-design is not the only approach to improving performance. I was struck by how there are different voltages used by the different components, from 1.2V for the ultra-efficient processors to 2kV if the phone includes a xenon strobe:
http://www.eetimes.com/article/showArti ... d=51200494
I think a good exercise for my students would be to generate various voltages from one AAA battery, then compare designs for how long they can have the battery last.