I think a backup battery would be cheaper and maybe even the footprint
would be smaller. The only drawback is that you have to remember
replacing that every year or so.

Tamas



On Fri, Feb 5, 2010 at 5:56 PM, Marc Nicholas <geekything@gmail.com> wrote:
> All this talk of cheap UPSes is timely...
>
> I'd like to be able to provide a few seconds of +5vdc to a device so that
> when its main power line fails it gets to "finish what its doing" (which it
> will if it is no longer being fed data, but needs a second or two to do so).
>
> Super or ultra caps come to mind, but I've never worked with them and some
> casual Googling hasn't turned up too much of interest.
>
> Any suggestions on where to start or tips? Obviously I don't want to end up
> with blown caps and/or blown device!
>
> TIA.
>
> -marc
>
> P.S: Oh, power draw for the device is 150mA nominal....so hoping I can just
> do something with a Schottky, resistors and cap!
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