Super Capacitors: where are they, etc.

Just curious:
Every once in awhile, the subject of the super capacitors (FARADS of
capacity in a handheld container.)
I have seen caps sold at Best Buy for the super sized automobile sound
systems. At these the "super capacitor" technology?
If it were all it's cracked to be I would think I would be seeing it more
often.
Reply to
John Gilmer
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I don't know if the Best Buy caps are supercapacitors or not. I know that supercapacitors are starting to make their way into consumer goods. The problem is that they are still somewhat expensive. I am pretty sure that those little remote control cars that recharge in seconds are power by supercapacitors.
We do most of our research in large, very large, and OMG size applications. We are currently working on a project that, when complete, will provide a MW or so of power for 2 seconds or so.
I know supercapacitors are used in Russia to suppliment car batteries for starting engines.
Charles Perry P.E.
Reply to
Charles Perry
The Russian military was the primary user. They are very expensive still because they are mostly hand made. There are some manufacturing advances occuring that could reduce cost but right now they are sort of like VCRs when they first came out....very expensive due to low volume.
I predict that in 2 to 5 years you will see them regularly. The autoindustry is looking at them for use in hybrids since they can charge and discharge very quickly without damage.
Charles Perry P.E.
Reply to
Charles Perry
That's what I "heard." (Likely from this group and perhaps youself.)
That's kind of what I mean: why don't we see new cars with supercaps? Or why not replacement batteries that combine a small batter and a "super".
Or why don't those portable starting packs have a "super."
It would seem to have all kinds of other applications like:
the power source for a "SUPER" spot welder. Or for a gadget that used a strong magnetic field to compress tubing to a leak tight connection.
Seems like a solution looking for problems but there seem to be so MANY problems.
That can't be too expensive if the Russians find them cost effective over using a battery warmer.
Reply to
John Gilmer
The The caps you see at Best Buy are not super caps. They are just big caps.
Reply to
Jimmie
Actually they are supercapacitors. They are small, physically, yet have ratings of 1 F and up. One website actually describes them as supercapacitors.
Charles Perry P.E.
Reply to
Charles Perry
Hey!
Maybe I should watch the ads etc and wait for those to go on sale.
The question is: What stupid/dangerous thing do I try first?
(I wonder what I would have tried back when I was a young "experimenter" back in the 1950s?)
Reply to
John Gilmer
in article 411a1ac2$0$ snipped-for-privacy@dingus.crosslink.net, John Gilmer at snipped-for-privacy@crosslink.net wrote on 8/11/04 5:59 AM:
I guess I am losing it. I do not know what a super capacitor is. Getting lots of farads in a small package is not scientifically a big deal. Getting lots of ENERGY STORAGE density is.
In my day, 5000 joule energy capacitors weighed about 100 kg. Higher densities could be achieved at the expense of lifetime and repetition rate.
Bill
Reply to
Repeating Rifle
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|> > Just curious: |> > |> > Every once in awhile, the subject of the super capacitors (FARADS of |> > capacity in a handheld container.) |> > |> > I have seen caps sold at Best Buy for the super sized automobile sound |> > systems. At these the "super capacitor" technology? |> > |> > If it were all it's cracked to be I would think I would be seeing it | more |> > often. |> > |> > |> The The caps you see at Best Buy are not super caps. They are just big | caps. |> |> | | Actually they are supercapacitors. They are small, physically, yet have | ratings of 1 F and up. One website actually describes them as | supercapacitors.
What kind of voltage and current ratings would they have? How could I calculate the heat dissipated from them in heavy use? What maximum temperature is it safe to run them before they burn out or melt foil or whatever? Got that website address?
Reply to
phil-news-nospam

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