ive heard that electrolytics go bang when they're connected backwards. the new ones have this vent @ the botom.

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I'm no electronics god, i just talk too much.

 

yes electrolytics can go BANG when you connect them in reverse. usually larger electrolytic have an X on top of them so that when the cap explodes the can doesnt fly out. actually when you connect it in reverse a chemical reaction occurs that produces hydrogen gas (or some other gas).

 

I've never seen a 3mF cap go bang. Not my fault
Manz ... smells real bad.

 

Over 10 years ago, I could get 1000 uF caps that would just EXPLODE!!! Now, designed to go.fffffffffffftssss. How's a young guy gonna get his fun anymore? . OSHA managed to take it all away. But they still stink. Note that the smoke is definitely NOT healthy. Down right noxious

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Dave Cutcher
Electronic Circuits for the Evil Genius

 

Eh I just acqired a few 1 farad caps from work there rated a 630 volts so I reckon powering them up the wrong way could be a top display.

Just da evil in me comin out :twisted: :twisted: :twisted:

 

:shock: Those should blow pretty good! try to get a video of it if you can!

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Jeff
To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is twice as big as it needs to be.

 

i dont think that the amount of explosion depends on the rated maximum voltage. i think it depends on the capacitance and the physical size of the capacitor. and i think that blowing a 630V capacitor might not be a good idea. i would not recommend playing with that much high voltages. anything bad could happen.

anyway if you still want to try blowing it then do it. and dont forget to upload a couple of snaps of it :lol:

 

mmmm I made up an electric fence controller that puts out 3.6kilovolts I wonder if that would make it POOOOOOOOOOOOOOOF ????????

 

Electrolyte cells create hydrogen and oxygen when a current is applied and how much is created in a time period depends on the voltage.... so yeah with that much voltage you would get a pretty good explosion in a fairly short time i would imagine.

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Never pet a burning cat

 

But electric fences are only low current, and usually just slow pulses of power - a short pulse every couple of seconds. At least the ones I've ever seen were - except for the one that had 240V mains wired straight to the fence!.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

[/quote]
At least the ones I've ever seen were - except for the one that had 240V mains wired straight to the fence!.[/quote]

:shock: :shock: wut was the purpose of that fence? to get the builder in a lawsuit? . . . . . sudden, instant, and even immediate death

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I'm no electronics god, i just talk too much.

 

At least the ones I've ever seen were - except for the one that had 240V mains wired straight to the fence!.[/quote]

:shock: :shock: wut was the purpose of that fence? to get the builder in a lawsuit? . . . . . sudden, instant, and even immediate death[/quote]

It was to keep cows out of a field of kale (I think it's spelt with a 'k') - an evil smelling green plant used for cattle feed. Cows love the stuff!.

This was back in the late 1960's, I was one of a number of kids who had to beat across those fields - basically scaring pheasants out so people could shoot them. We had to very carefully climb under, or over, this 240V live wire in the pouring rain!.

Tough job for very little pay, we got paid 10 shillings for a saturdays work, a friend from school used to do a similar job (but for grouse) and got paid 4 pounds (eight times as much!). If you didn't get electrocuted you were still liable to get shot! :lol:

BTW, 240V isn't "sudden, instant, and even immediate death", I've had a great many 240V shocks - you have to work pretty hard for 240V to kill you, or be really unlucky!. But a number of people are killed every year, but that happens with 110V mains as well.

But having said that, being in soaked clothes, in the pouring rain, is probably "working pretty hard" towards it! :lol:

Kids these days don't know they are born!.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

At least the ones I've ever seen were - except for the one that had 240V mains wired straight to the fence!.[/quote]

:shock: :shock: wut was the purpose of that fence? to get the builder in a lawsuit? . . . . . sudden, instant, and even immediate death[/quote]

LOL Zach,
The electric fence controller I made develops 3.6kilovolts but only draws 190milliamps of power off 12 volts. When a human touches it you only get a mild shock but 1 of my mates found out the wrong way when he decided to take a leak on the fence. My wife reckons she heard him scream from over 1/2 a kilometre away. But it was a top laugh...

cheers Bryan1

 

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HAAAA AHAAAAAAAAAAAAAAA!!!!!!!!!! THAT IS A TOP LAUGH!!

i stil cant imagine y someone would power an electric fence directly off 240v. its not the voltage that kills, its the amperage :shock: .

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I'm no electronics god, i just talk too much.

 

its niether the voltage nor the current that matters. its the power (or energy transferred per unit time) that matters.

so no matter what the voltage is the amount of shock will depend on the power transfered to the person and the path followed by the current. and if the heart comes in the electrical path the heart will start fibrilating.