Hi All,
On 05/19/2016 05:33 PM, Super Twang wrote:
@Lachlan
Thanks for the info Lachlan.
Re: Supercap reliability…
My basic understanding is that if you design with supercaps for a “Everyday”
(ie not too hardcore) indoor use case, and keep them within some pretty
obtainable operating conditions they effectively last forever. Obviously
there’s some ambiguity (“everyday” “pretty obtainable”, “effectively”) in the
prior assertion, but...
My particular use case — indoor temps but in a wall, 5v power — might see a
temp range of 15° - 35°C max I’d guess. The 70°C - 105°C you’re talking about
would have to be a pretty harsh/industrial environment, no?
Does anyone (who has done it, or knows how) have a sense of how straightforward
it is to achieve a supercap-based system design that keeps the components in a
range that’d keep them healthy for “Effectively forever?” ie 20k+ cycles?
(better than bats) 100k+? (effectively forever) Or, do the requirements we’re
looking at for a basic, indoor, power system really push the supercaps into the
“Quickly-used-up” zone?
Yes we have some experience about supercaps.
We have an organ controller which is working two years ago,
approximately 3-4 on/off per day. Yes it is an indoor application.
Our second application is an industrial environment with Pandaboard
which is working since last september approximately 1 on/off per day. It
is a semi indoor environment.
Our third application is a timelapse camera system with Raspberry (
http://1nap1perc.hu/pecsi-magashaz-bontas/ ) which is started at early
of march. It is an outdoor application which is working 7/24.
In other point of view, if you checked the parameters of supercap for
example
http://www.newark.com/illinois-capacitor/506dcn2r7q/super-capacitor-aluminum-elect/dp/90R9922
you can see:
operating temperature: -40-+60C
Life cycles: 500000
A simple NiCd accumulator is much more weight, and its lifecycle is much
more less, the operating temperature is 0-45C and lifecycle is less than
10000.
So supercap seems to be ideal for power supply to an embedded system,
but it needs a little bit complicated controller electronic.
best regards,
--
Zoltan (Zamek) Zidarics
programmer
email:[email protected]
Self Playing Pipe Organ Systems
http://replayorgan.eu
--
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