Hubbard coil

[Paul-R]

Got to add these iron bundles of garden wire.
In the design document he uses gold which is not magentic.

Don't forget that much garden is not iron, but mild steel. And the old
fashioned weldiong rods are hard to find. What is made out of iron?
Paul-R

[the_big_m_in_ok]

Don't forget that much garden is not iron, but mild steel. And the old
fashioned weldiong rods are hard to find. What is made out of iron?
Paul-R

Building construction reinforcing rod(rebar, in America) is made of soft cast iron.  Very common as trash in short lengths, especially around construction sites.

--Lee

[Paul-R]

Building construction reinforcing rod(rebar, in America) is made of soft cast iron.  Very common as trash in short lengths, especially around construction sites.
--Lee

I wonder if you are right. This reinforcing is to make concrete take tension. I would
have thought steel is needed. Iron would crack under tension.

I shall have to find some and test it ability to shed magnetism

[the_big_m_in_ok]

Paul-R said:

I would have thought steel is needed.

A lot is used, so adding cost with special alloys would be counterproductive in terms of expense.

...Iron would crack under tension.

I've seen it bend pretty easily in long lengths on the ground.  Short lengths are used because shorter lengths are inherently stiffer.

I shall have to find some and test it ability to shed magnetism

You could find some and make a transformer out of it.
Please keep in mind:  ferro-resonant silico-steel is deliberately used in transformers because it doesn't get as hot as pure iron by excessive magnetic flux.  And it still works okay in the meantime.

--Lee

[forest]

Why not use soft iron to make a copy of original signal just shifted in phase of 90 degrees ? Why not send it around shifting around in circle to produce big kick ? what is going on with electric current if it pass along wire which is going on across magnetic shield ?