Tavor

modified 12 years ago

1 K amper. Is it possible

128

01:59:06

Is it possible in real life to get 1k amper? Using a  5 volt battery?.. 

published 12 years ago

adrien1018

12 years ago

If you use a capacitor, that is possible(for a short while), but batteries have high ESR(about 0.2ohms), so it is impossible.

hurz

12 years ago

There are really bug batteries array like for hospitals, no problem let fall a crewdriver on its copperline connection it just gives a big bang and the crewdriver is gone. Low voltage but high current!!

thebugger

12 years ago

As adrien said capacitors can give high current but for a very short time. Depending on the capacitor discharging it at 1kA would fully deplete it in mS even uS. But batteries have internal resistance yeah about 200mOhms depending on the battery so they allow lower current but long life.

faceblast

12 years ago

You could parallel a few thousand batteries together

rbrtkurtz

12 years ago

You wouldn't need a few thousand. Hurz gave the prime example of a hospital. Big, big batteries, low volts, lots of amps (I.e. lots of amp-hours). They aren't cheap though, and you won't be able to get them at Wal-Mart.

faceblast

12 years ago

If 1.5V ÷ 0.2ohm = 7.5A, then you only need 560 1.5V batteries in 4 banks of 140 for 1050A at 6V.

rbrtkurtz

12 years ago

...or you could give that a try.

faceblast

12 years ago

froogle says Lr6 1.5V 2900mAh are 7c USD each in bulk buy from china, minimum buy is 40,000. less than a cent per amp!

faceblast

12 years ago

could use mesh to hold them in an array

faceblast

12 years ago

aluminium panels for conductors

faceblast

12 years ago

thinking way too much about this

Romualdo

12 years ago

Meu ovo que dá pra fazer isso

Romualdo

12 years ago

Meu ovo que dá pra fazer isso

tehmarkster

12 years ago

No a battery has internal resistance that sets its max current. Also you'd need a HUGE conductor to handle that current.

spammailbox

12 years ago

For example, a common AA battery will have an internal resistance of 0.7mOhm (this is what I recall from looking at energizer's specs). 1.

spammailbox

12 years ago

I meant to write 0.7Ohm, not mOhm

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