high current pulse?

[Ken Williams]

I'm trying to create a permanent magnet. I have a steel rod. I wrap AWG
6 around the rod twice (so I got a two layer coil) and directly connect
it to a 12V DC battery for like a tractor or snowmobile (235 cold
cranking amps).

Very little happens. A max of 5A comes out and I can't even make an
electromagnet.

Can anyone tell me what I can do to get an extremely high amperage
pulse? Are there any power supplies that will generate a high amp
current? I'm thinking like 80 amps at 12V.

 

[Geek]

I'm trying to create a permanent magnet. I have a steel rod. I wrap AWG 6
around the rod twice (so I got a two layer coil) and directly connect it
to a 12V DC battery for like a tractor or snowmobile (235 cold cranking
amps).
Very little happens. A max of 5A comes out and I can't even make an
electromagnet.
Can anyone tell me what I can do to get an extremely high amperage pulse?
Are there any power supplies that will generate a high amp current? I'm
thinking like 80 amps at 12V.

Wire sufficient FGCs in parallel to give you 1 Farad.

Charge to 1kV

Discharge through 10 turn 6" diameter coil made
from 1/4" copper rod.

Important .... just before you discharge, phone for the ambulance
because the ignorance that you display is certain to kill you
during the process.

(Wasn't his advice given here recently?)

 

[Resqueline]

Ken; you better read up on Ohm's law and more before you hurt yourself. How long was that wire?
If that battery had been any good you might have been left with serious burns on your hands & maybe even eye damage from the exploding wire (depending on wire length).
Now, to get 80A @ 12V you need a resistance of 12/80 = 0.15 Ohms.
Google for awg wire resistance table and see how long the wire needs to be to have that resistance. Cut that length and wrap it all around the rod.
Another factor to bear in mind is power and time. 12V * 80A = 960W. The #6 wire will get very hot very fast so be careful about the timing.!