A strange oscillator

That's a good one. No one can argue about something so entertaining.

Sometimes it seems like all this group is good for is the lemons with no lemonade.

I think this one is even more entertaining:

Or if you have a spare 10 minutes make one of these !!

How about racing AA batteries:

If memory serves me right, this was invented by Claude Shannon who is the father of Digital Signal Processing

I'm wondering what the battery consumption is like.

ining.

I haven't figured out what makes it go. The battery is shorted by the coil between it's ends which makes a magnetic field through the coil. It's a v ery low resistance so the current is high and a strong magnetic field. But I can't picture how this is creating a force on the battery since the magn etic lines are parallel to the battery.

I can only imagine the current is limited by the battery internal resistanc e, so not much of a comparison for life span. But that says to me the wire can be something cheaper with higher resistance and not impact the motive f orce. I wonder if there is a child's toy product in here some where. It m ost likely eats batteries like kids eat jelly beans.

taining.

ith

il between it's ends which makes a magnetic field through the coil. It's a very low resistance so the current is high and a strong magnetic field. B ut I can't picture how this is creating a force on the battery since the ma gnetic lines are parallel to the battery.

there's a permanent magnet stuck to each end of the battery

e:

ertaining.

with

coil between it's ends which makes a magnetic field through the coil. It's a very low resistance so the current is high and a strong magnetic field. But I can't picture how this is creating a force on the battery since the magnetic lines are parallel to the battery.

Duh! I was thinking this was about making contact and forgot they are magn ets. Cool, thanks.

I might have to make one of these. I'll need to get bare wire. My buss wi re is enameled. A friend with kids would love it. The kids might like it too.

The coils will stand up better if they are wound on plastic tubes, but the movement of the coils is pretty cool.

but no current will flow...!