The Charge of the Ultra - Capacitors (Sexy capacitor pics!)

Spectrum / IEEE ^ | Nov 2007 | Joel Schindall

[Uncledave]

Plain Old Plates: In a typical capacitor, electrons are removed from one plate and deposited on the other. Polarized molecules in the dielectric concentrate the electric field. One major factor determining capacitance is the surface area of the plates.

Plated Packed with Ions: An ultracapacitor can store more charge than a capacitor can, because the ­activated carbon has a pocked interior, much like a sponge. This means that ions in the electrolyte can cling to more surface area.

Enter the Nano-World: With finer dimensions and more uniform distribution, carbon nanotubes enable greater energy storage in ultracapacitors than activated carbon does.

How to Ultracap a Car: Ultracapacitors can power a number of a car’s ­functions locally. The orange arrows show how an ultra­capacitor discharges to power acceleration,while the blue arrows show energy flowingback during braking. The red squaresindicate places where ultracapacitors can be used.

[Uncledave]

RE Ping Renewable Energy Ping

Please Freep Mail me if you'd like on/off

[Domandred]

Sexy capacitor pics!

I'll be in my bunk

[Uncledave]

The innovation that my colleagues John Kassakian and Riccardo Signorelli and I have pursued at MIT is to replace the activated carbon with a dense, microscopic forest of carbon nanotubes that is grown directly on the surface of the current collector. We think—and our work so far supports our theory—that by doing so, we can create a device that can hold up to 50 percent as much electrical energy as a comparably sized battery. This feat would allow ultracapacitors to supplant batteries in a number of mainstream applications.

Good luck to you, gents!

[Yo-Yo]

You just need a bank of these:

[Red Badger]

Sexy capacitors? Is that part of Kirchoff’s Law?.........

[massgopguy]

One of life’s simple pleasures as a Test Technician at Digital in the late 1970’s was placing a big screwdriver across the poles of a large capacitor. Safety Glasses please.

[Parley Baer]

Just had a thought. I wonder if it is posible to capture static electricity while driving down the road. I know there is a charge built up in airplanes and when landing they need to be grounded.

[Sender]

Capacitor porn, pics of the buses.

[PA Engineer]

One of life’s simple pleasures

Charged capacitor wars!. Burn cream please.

[LexBaird]

Sexy capacitor pics!

I'll be in my bunk

I suggest you forego the oral...

[Yo-Yo]

One of life’s other simple pleasures as an Airman in tech school was charging up a 100 VDC 470mF cap, then tossing it at an unsuspecting buddy for him to catch barehanded...

[Tarpon]

What’s the energy density per pound?

[Incorrigible]

Ha! How many capacitors met their end of life prematurely on the work benches of Electrical Engineering schools?

[2 Kool 2 Be 4-Gotten]

Now THAT’s funny, I don’t care who you are.

[willgolfforfood]

That's one entire FARAD? Geeezzzzzzz. That thing looks pretty small.

I've seen a few 1.0 F caps in these custom car stereo shops, where they add these huge caps so that the bass notes don't dim the headlights (seriously). But those are about the size of a quart of milk. At only 12 Volts DC, of course...

That thing looks MUCH smaller than that. Intersting times..........

[Yo-Yo]

I know. That NEC is only about an inch in diameter.

http://www.sargentwelch.com/product.asp_Q_pn_E_CP32248-50_EA_A_Capacitor,+One-Farad_E_

[polymuser]

So long as the Chinese don't steal then screw up this recipe, and we get even more bad caps (with vent goo) in our stuff.

[spokeshave]

A Farad eh.....what about the flux capacitor?

[lilylangtree]

When the “flux capacitor” is developed, tada—warp drive!