Re: [TCML] Kids class Project

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

3 days?


You could build a poly phase motor model..

Wind 3 or 4 electromagnets (magnet wire on a soft iron core.. nails work in a pinch, so does coat hanger wire)

Orient the magnets like a star around the rotor.. that's the stator
Use a magnetic compass as your "rotor"

Rig up a rotary switch kind of arrangement to run battery voltage through the appropriate coils one at a time (brass "brads" work nicely as electrodes).. as you rotate the switch, the compass needle turns.

You could also use something a bit bigger than a compass (like a bar magnet) on a suitable bearing.



-----Original Message-----
>From: "Anthony R. Mollner" <penny831@xxxxxxxxxxxxx>
>Sent: Dec 3, 2007 10:05 PM
>To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>Subject: [TCML] Kids class Project
>
>Here's a question for the group. I need a "Tesla" project for a kids 7th
>grade school science project due on Friday? Anything easy would be good. An
>AC demonstration, a motor, ANYTHING that can be written up and a model made.
>
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