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Registered Member #1561
Joined: Mon Jun 23 2008, 07:58PM
Location:
Posts: 25
Hey I just posted these up on ebay, thought you guy's might be interested. If you guy's pm me I'll give you a better price because I know that I'll get to see what kind of stuff you guy's will do with these.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
bwahaha... i can just imagine how much of a boost you'd get from an electric car/bicycle/whatever with these beasties onboard. Main headache is going to be the low voltage, for the maximum output current you'll need to parallel them which means making the biggest FET bank you've ever seen driving a 5 or so turn primary on a toroidal transformer. then some clever electronics to calculate remaining capacity and adjust switching waveform in realtime depending on loading.
The transformer will need to be wound Litz style for any hope of not burning out instantly, which means getting your 50 or so 22 gauge wires in a bundle, connecting to electric drill and twisting 'em. I've actually done this before but nowhere near this scale (made an HV primary, and have seen it done on commercial CCFL and UPS drivers)
Figure about 2-300 Amps for the motor based on what I've learned on studying the electric motorbike on Hackaday.
OTOH, someone over here is making Smart cars converted to electric drive, as the petrol engines aren't very reliable (koff head gasket /koff as based on Fiat engines) so they might be interested in these.
Banned on 3/17/2009. Registered Member #487
Joined: Sun Jul 09 2006, 01:22AM
Location:
Posts: 617
I always see those here at work. The ones we have are coke can sized and we use them for some sort of solar panel simulation. I don't think they simulate the panels directly as we have big friggin racks that do that. I just know they fit in there somewhere.
Ive been waiting so long for them to toss them in the recycle bin. No luck so far.
Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
where do you get all these caps? the same company has a 3000F 2/7v boostcap, and also a cap bank thats like 370v (forgot capacitance) and totaled to over 1 million joules.
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Ultra Capacitors on Ebay
