Any ideas as to what this might've been intended for?

[ghb624]

The item in photo is a coil of 20-gauge copper wire (with enamel or
varnish insulation), is 12 inches in diameter, weighs close to 5
pounds and has a resistance of about 25 ohms. The coil is wrapped with
electrical tape. Appears to have been homemade. Found it in a box of
electrical odds & ends which I rescued, to keep some potentially
good (?) stuff from going to the landfill.
http://www.flickr.com/photos/ghb624/2587999848/

 

[Bob Myers]

The item in photo is a coil of 20-gauge copper wire (with enamel or
varnish insulation), is 12 inches in diameter, weighs close to 5
pounds and has a resistance of about 25 ohms. The coil is wrapped with
electrical tape. Appears to have been homemade. Found it in a box of
electrical odds & ends which I rescued, to keep some potentially
good (?) stuff from going to the landfill.
http://www.flickr.com/photos/ghb624/2587999848/

A couple of thoughts on the possible intended use -

- Sense coil for a home-brew metal detector.

- Degauss coil for use with CRT monitors, TVs., etc..

Bob M.

 

[Baron]

news:c53c3ebc-e4bf-4323-852a-a934b6505dd3@j22g2000hsf.googlegroups.com...

A couple of thoughts on the possible intended use -

- Sense coil for a home-brew metal detector.

- Degauss coil for use with CRT monitors, TVs., etc..

Bob M.

I would have gone with a degaussing coil ! It looks a bit like the ones
we had 30 odd years ago. Having said that when I was at school I
recall some apparatus with a similar coil used for demonstrating the
principles of magnetism.

 

[ghb624]

It does look a good bit like commercially available degaussing coils.
With CRT monitors being well on the way toward the same end as the
dinosaurs, it's probably not worth even experimenting to see if it
works for that task. Also, if my measurement of 25 ohms is right, it
would pull about 4.5 amps when hooked up to 115 vac outlet. Guess that
would make me a little nervous. Possibly a very brief activation is
all it takes though.
Anyway, thanks much. Maybe the best use for this item is taking it to
the metal recycler!

 

[ghb624]

Wow, another example of what an amazing network of expertise one can
tap into via the net, specifically, through Google groups! Thanks
much, John.