Energy use in cell phones more complex at closer look

Discuss topics in energy science, like thermodynamics, peak oil, electricity, conversions...
Post Reply
shawn
Site Admin
Posts: 277
Joined: Wed Oct 19, 2005 9:41 am
Location: Ithaca, NY

Energy use in cell phones more complex at closer look

Post by shawn » Sun Jan 07, 2007 3:17 pm

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.

Post Reply