> Incorrect information, sloppiness, etc, is going to derail a thread. =A0T=
he
> best way to get it back on track is NOT by complaining about it and tryin=
g
> to pretend it's someone else's fault.


Ah, now I remember why I signed off the Piclist, a similar diatribe of
yours that resulted in James Newton signing off.


I love how you work things around,  with little phrases like "trying
to pretend it's someone else's fault."
I don't see that I  "complained about it" or tried to "pretend it's
someone else's fault"..
My mistake, My bad. I posted a correction.  Get over it, or don't, you choi=
ce.


> At this point you need to repair your credibility.

I'm sure that this is true, in your not so humble opinion.


> =A0Perhaps you could explain what you are trying to accomplish overall in=
stead of just posting
> requirements. =A0That way maybe we can get some confidence that the
> requirements are real and make sense before spending effort on them again=
..


Ok, back to the actual problem at hand.

I have an existing system using a 2200uF 16V aluminum electrolytic as
energy storage, to keep a 3.3V processor running long enough to log
some data after the AC input has been removed.  This works well enough
in the existing product which is designed for in-home use, but I have
been asked to redesign into an outdoor environment, and I will not be
allowed to use anything other than minimal passive temperature
control.  I am constrained by space and cost, but cost is moveable
within reason, if I can justify the delta.  We don't have established
environmental specs, which complicates things significantly.

So, I am wondering what practical alternatives are available.  I
haven't seen anything in supercaps yet that works for me, they are
still relatively low voltage and high cost, though the capacitance
values are impressive.

I could maybe justify multiple ceramics, but they have their own
issues with temperature extremes.

--=20
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