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Supercapacitor Contest!


What can you do with a lot of supercapacitors? This is no idle question. I picked up a bag of 100 on eBay. These are sweet: Cooper PowerStor Series A carbon aerogel capactitors with ultra-low resistance. Specifications: 2.5 V, 1.5 F, with nominal equivalent series resistance of 60 milliohms at 1 kHz. I recently saw these at Digi-Key for $9.60 each. These aren't the wimpy memory backup caps that aren't rated for enough current to drive an LED. These are power caps, meant for high current charge and discharge.

Obviously, these are meant for great things. It only leaves one question: What great things should I do with them? To help answer that, I'm holding a contest: Come up with the best use for a pile of supercaps, and you'll get ten of them to play with.



Here are the details:
Enter by posting a good idea for a supercapacitor project. Your suggestion doesn't have to use all of the caps, or even most of them-- something that uses only one might be a perfectly good suggestion. Enter as often as you like. You can post your entry as a comment here or E-mail your entry. You have until July 31, 2006, midnight PDT. (If you post anonymously, you might want to leave some contact information as well so that I can contact the winner.)

The winner will be judged by the EMSL staff. Points will be awarded for originality, cleverness and geek appeal. The prize for the best entry is a set of ten supercapacitors, sent by mail. You could possibly interpret the prize value to approach $100! If there are enough good entries, five caps each will be sent to the two runners up.

Here are a few ideas to get you started:

  • Rechargeable LED throwies!
  • Storage element for bike headlight generator.
  • Fast recharge radio control battery for electric model planes, to enable mid-air refueling!
The contest begins... Now!

[Update: Contest has ended. The winners were announced here]

Supercapacitor Contest! | 40 comments | Create New Account
The following comments are owned by whomever posted them. This site is not responsible for what they say.
Supercapacitor Contest!
From: christian on Friday, July 14 2006 @ 11:04 AM PST
Use supercapacitors to build a beaded curtain.
Supercapacitor Contest!
From: christian on Friday, July 14 2006 @ 11:09 AM PST
Make Christmas tree ornaments out of supercapacitors. You might want to
use them to power an LED or two on the inside of the ornament...
Supercapacitor Contest!
From: Anonymous on Friday, July 14 2006 @ 12:31 PM PST
Make a railgun, using one capacitor to drive each coil.
  • no - From: Anonymous on Friday, September 29 2006 @ 05:14 PM PST
Supercapacitor Contest!
From: nerd256 on Friday, July 14 2006 @ 12:55 PM PST
90 Super capacitors ( presumably you gave away 10 of them ) =
135 F, pretty impressive, but I like the serial configuration better

90*2.5 = 225V at 16.67mF = 421.875 Joules.

So, were you to string them up in series, charge all of them, you'd have quite the "ESD tester". Hook it up to an LED and see what happens. Want to get back at that op-amp thats been giving you trouble? Tired of your peers who are sucking up your bandwidth (disconnect own computer first) ?

Or you could just pop them into a wall outlet and have them explode spectacularly.

Sorry, all my ideas have to do with death and destruction.
Safety / Legality not guarenteed.
Supercapacitor Contest!
From: Anonymous on Friday, July 14 2006 @ 01:00 PM PST
It probably isn't possible, but I have always wondered if someone could figure out how to engineer one of these with a self contained power source, even if it only hovers a short time.

http://jnaudin.free.fr/lifters/main.htm
Supercapacitor Contest!
From: Anonymous on Friday, July 14 2006 @ 02:55 PM PST
Use them in building a Tesla coil.
http://brianb.org/tesla.htm
Supercapacitor Contest!
From: MikeFez on Friday, July 14 2006 @ 03:46 PM PST
I emailed you this but I just figured out how to reply, Wire them all up to the nessacary voltage and place them in your trunk of your car so that if your battery dies you have a quick restart so you can at least get going.

Another one:
Just wire them up for portabal appliances such as a xbox or computer
Supercapacitor Contest!
From: fergbrain on Friday, July 14 2006 @ 04:51 PM PST
Make a coil gun. I made one my senior year in high school using a bunch of capacitors from disposable cameras (we went around to the local stores and they would give us large boxes filled with spent disposable cameras). We ended up using some 300 capacitors (each was around 330 micro Farads) and a set of capacitors from an old defibrillator. We wrapped a bunch of wire around a PVC tube, placed a magnet inside, charged the bank, then fired it. Wow.
Supercapacitor Contest!
From: Anonymous on Wednesday, July 19 2006 @ 08:43 PM PST
Make an electric mine field by using the "capacitor grenade" design at the bottom of this page:

http://rotteneggs.com/r3/show/se/132965.html

(I wonder if that's enough voltage to kill a rat? Put some PB under it and use them as elcro-rat traps!)
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 12:39 AM PST
Tiny, tandem-rotor helicopters that zoom straight up in the air! With bright LED for nighttime use.
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 12:47 AM PST
Power an electromagnetic pendulum clock by storing solar energy!
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 12:51 AM PST
Rechargeable mitten warmers!
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 12:55 AM PST
Anti-lock power brakes for bicycles!
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 01:00 AM PST
Screwdriver degausser/remagnetizer!
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 01:23 AM PST
Pimp your boombox amp!
Supercapacitor Contest!
From: Matt on Thursday, July 20 2006 @ 01:39 AM PST
Make a coil g... no, wait! Make a Big Oscillator :)
Supercapacitor Contest!
From: peterman921 on Tuesday, July 25 2006 @ 02:21 PM PST
use them for rechargable flashlights using old servos or gear motors.

Supercapacitor Contest!
From: Matt on Wednesday, July 26 2006 @ 09:24 PM PST
Some kind of vibration damper. Hmm...
Supercapacitor Contest!
From: Matt on Sunday, July 30 2006 @ 10:27 PM PST
Inductively-charged bubble-bath mood lights! (um, embedded in crystal clear epoxy or something ;)

yeah, molded into shapes! Cute blue-LED clouds, amber suns, emerald leaves, a school of multicolored fishes / sea life (with Glowing Innards)
Supercapacitor Contest!
From: Matt on Tuesday, August 01 2006 @ 01:06 AM PST
One-dimensional CCD for really really bright light!
Supercapacitor Contest!
From: Anonymous on Thursday, August 17 2006 @ 07:05 PM PST
Make a glove that stuns people, or a stun gun
Supercapacitor Contest!
From: Anonymous on Wednesday, August 23 2006 @ 08:20 PM PST
Unroll them and use the foil for tree decorations at Christmas
Supercapacitor Contest!
From: Ozyg on Sunday, September 24 2006 @ 10:21 AM PST
Make several electronic grasshoppers. Attach some solar cells (from cheap calculators maybe) and buzzers, to make them recharge at day and chirp at night! Then seal them in epoxy to make them waterproof.
Supercapacitor Contest!
From: Anonymous on Thursday, January 10 2008 @ 09:11 PM PST
You can use a charged capaciter and connect it to a pager motor with a small fan attached. This will cause the lightweight aircraft to hover arround the room.

spartas_phalanx(at)hotmail.com
Supercapacitor Contest!
From: Anonymous on Thursday, January 01 2009 @ 02:04 PM PST
a high voltage Marx generator.