Unfortunately I can't risk a battery in this application....

-marc

On Fri, Feb 5, 2010 at 2:34 PM, Tamas Rudnai <tamas.rudnai@gmail.com> wrote:

> 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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