Fun with Ultracapacitors

[punjabiplaya]

2600 F cap

neat stuff, especially the PCB traces

http://www.youtube.com/watch?v=EoWMF3VkI6U&feature=sub

 

[Soccerman06]

You should play around with a 230v welder... :hmm:

 

[Gooberlx2]

My eyes totally tricked my brain in to thinking this thread's title was "Fun with Velociraptors". So while I am still somewhat disappointed, that was a pretty rad video.

 

[eLiu]

My eyes totally tricked my brain in to thinking this thread's title was "Fun with Velociraptors". So while I am still somewhat disappointed, that was a pretty rad video.

If anyone who reads this thread goes on to teach students about capacitors, PLEASE PLEASE PLEASE relabel them as velociraptors. AWESOME.

 

[Renob]

lol love when he says "Wow that beaver really took a pounding"

 

[geno]

"Wow, that beaver really took a pounding" 😀

that was both very informative and very interesting to watch :thumbsup:

 

[Sentrosi2121]

Holy crap! Amazing!

 

[Rubycon]

Yes much safer than using ultra low impedance Pb cells (Gates cyclon) even though the mfr claims (the cells) can take it.

Even so ultra low ESR caps can really crank the current!

The biggest mistake I see in this video even with the single cap was his wire gauge was way too small. Granted it's harder to handle 0 gauge welding cable in your hands the sparks (and destruction) would have been ridiculous if his cables were larger. (particularly at 10V!)

100 of these in series would be able to do some serious damage. It would take a long time to charge (need to rectify AC mains with current limiting). Dumping that into a huge coil would probably send a formidable slug at terrifying speeds. :awe:

 

[El Guaraguao]

I was giggling throughout the whooole damn vid...wtf is wrong with me 🙁

 

[halik]

awesome,

 

[MikeMike]

i want more destruction videos like this one!

 

[Rubycon]

Higher voltage allows for more interesting things...

http://www.youtube.com/watch?v=gj1pkyCL75E&

Imagine what that would do if those wires were clipped to the pinnas of ears? 😱

That's just a little bit more energy than the bank in the OP but at much higher voltage...

1000 ultra low ESR caps in series would probably turn a wiener (hot dog you pervs!) into a meaty grenade, for example.

 

[Slacker]

meaty grenade

snicker

 

[gar3555]

we made one of these in the office for shits and giggles. It is fun to cut pop cans and stuff up with it.

 

[Rubycon]

Those for automotive amps?
How resistant are they to abuse, i.e. crowbar across terminals? :biggrin:

 

[gar3555]

Those for automotive amps?
How resistant are they to abuse, i.e. crowbar across terminals? :biggrin:

They are, and it is just for playing around in the office...I wouldn't recommend any heavy prying with them 😛.

 

[SlitheryDee]

So what would happen if you wired those to say...a doorknob and a metal plate on the floor of a room in which people usually walk barefooted?

 

[LordMorpheus]

So what would happen if you wired those to say...a doorknob and a metal plate on the floor of a room in which people usually walk barefooted?

Nasty shock, but your skin resistance should be high enough that you wouldn't get a dangerous dose of current from a 10V source, no matter how small the source impedance.

 

[SuperSix]

Well done video - thanks for sharing

 

[Rubycon]

So what would happen if you wired those to say...a doorknob and a metal plate on the floor of a room in which people usually walk barefooted?

You would not even feel it.

HOWEVER if an ignitor was used to set up current flow (like a trigger) it may be possible to initiate extreme current flow but skin resistance is the biggest obstacle to overcome. Ten volts is simply not enough pressure to do it on its own. This is why you can put a 9V battery on your arm and not feel a thing. Put it on your tongue, however; and you will feel it!