Yes, a classroom demonstration device, although someone might try to use
it as some type of displacement sensor, something like an LVDT (linear
variable differential transformer (or transducer)).
Thusly spake Wayne:
> Pat wrote:
>> I don't remember what it is called, but it is used to demonstrate
>> magnetic coupling. An AC voltage is placed across one of the coils (I
>> think the terminals on the base) and an AC volt meter is placed
>> across the terminals on the top. As the core (rod in the center) is
>> withdrawn the voltage reading will decrease.
>
> Sounds reasonable, though I can't think of any useful application for
> it. The effect is just simple inductance, or inductive coupling.
> Maybe it's some science fair or classroom type of demo device?
>
> -Wayne
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--
Pat Horne, Owner, Horne Systems (512) 797-7501
5026 FM 2001 Lockhart, TX 78644-4443
Pat@HorneSystemsTx.com www.hornesystemstx.com
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