From: Holly G. <hgates@EINK.com> - 2005-09-07 14:58:47
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I think nickel chemistry is even more suited to high peak currents than lithium. -Holly Alexandre Pereira Nunes wrote: > Holly Gates escreveu: > > >I used a GS201 supercap from Cap-xx.com in parallel with 3 AAA batteries > >for a project. You can see it at > >http://www.positron.org/projects/h2/cases.shtml - in the "Alkaline" > >section, the supercap is visible through the back of the case, just > >below the MMC card slot. The supercap extended the AAA lifetime from > >something like 20 minutes to a few hours. I didn't worry about > >connecting the supercap to the batteries as the AAAs have pretty high > >internal resistance so the current surge wouldn't be that high. I put > >the supercap in parallel with the batteries before the power switch. > >With Li-ion batteries the supercap is not really needed since Li-ion has > >low internal resistance and doesn't mind the curren peaks my application > >generates as much as alkalines do. > > > >-Holly > > > > > > > > Good to hear that! :-) > > What about NiCD/NiMH? > > Thanks, > > Alexandre > > > ------------------------------------------------------- > SF.Net email is Sponsored by the Better Software Conference & EXPO > September 19-22, 2005 * San Francisco, CA * Development Lifecycle > Practices > Agile & Plan-Driven Development * Managing Projects & Teams * Testing > & QA > Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |