Pages: [1]   Go Down
Author Topic: Exploding capacitor video  (Read 2975 times)
0 Members and 1 Guest are viewing this topic.
ottawa, canada
Offline Offline
God Member
*****
Karma: 6
Posts: 990
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset



This short video shows the results of two electrolytics and a tantalum capacitor with reversed polarity and modest voltage overage.  The 10 uf tantalum cap not only explodes but burns very nicely afterward.  One of the electrolytics manages a really ferocious bang but, to be fair, it's 470uf.

He's running 15V reversed into 10v caps but I bet that's not the important factor.

http://www.eevblog.com/2009/11/04/eevblog-42-exploding-capacitors-in-high-speed/
Logged

Manchester (England England)
Offline Offline
Brattain Member
*****
Karma: 626
Posts: 34146
Solder is electric glue
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Excellent, all beginners should see this.  ;D

This is why using tantalum capacitors in a power supply or for supply decoupling is not a good idea. Even when they are connected the right way round they can fail short circuit and burn like that.
Logged

Nowhere
Offline Offline
God Member
*****
Karma: 3
Posts: 852
|-\ |\|\
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

"I know!  Lets blow some **** up!"

this guy is funny.

That is such a hilarious line.
And I learned something, too!:
don't connect caps the wrong way at 5v higher than they should be.

Great advice!!!
Logged

Soundcloud page: http://soundcloud.com/beefinator-2
Youtube channel: http://www.youtube.com/user/beefinator14
Old soundcloud page (ran out o

Manchester, New Hampshire
Offline Offline
Edison Member
*
Karma: 4
Posts: 1363
Propmaker
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Haha!

"Here's a cap without a vent on top!  Is that gonna f*** us?"

At least, that's what I thought I heard. :-)
Logged

Tucson, Az
Offline Offline
Newbie
*
Karma: 0
Posts: 29
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

    We used to do this in college lab classes. Shoot them off the breadboard and into the celing.    ;D ;D ;D
Logged

Holland
Offline Offline
Sr. Member
****
Karma: 0
Posts: 439
Arduino likes cookies too
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

More like 14 volts too much  :smiley
He clearly says at the end that you shouldn't go past a volt or a volt and a half when wiring em up backwards =P
Logged

0
Offline Offline
Sr. Member
****
Karma: 0
Posts: 318
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

That guy is rather energetic, isn't he?

The tant cap was interesting to watch. You get an explosion, and then "oh look, it's on fire."

Then a few seconds of not much action.

Then, suddenly, "oh DANG! It's REALLY on fire!"  :o  :o :o
« Last Edit: April 20, 2010, 02:28:17 pm by ill_switch » Logged

Pages: [1]   Go Up
Jump to: