Not so, they can also be used for DC depending on what they are
attached to. Same principle as the induction loop on an electronic
tach, which runs on DC. They use the inductance produced by an
electrical current to run a voltmeter (or galvanometer) movement.
Bill Lawrence
On Apr 20, 2004, at 1:56 AM, Alan F Cross wrote:
> I can't see how an inductive loop will work, as they only give an
> output from an alternating current.
>
> Now, a Hall Effect device strapped to the cable might work. Anyone
> experimented here?
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