[sdiy] Dr strange no volt!

[Ian Fritz]

At 03:45 AM 8/6/2004, Glen wrote:
>At 09:18 PM 8/5/04 , karl dalen wrote:
>
> >Is it possible to have a flow of current at 0V?
> >Is it possible to have current but no voltage?
> >Is it possible to have voltage but zero current?
>
>The answer to the last question is yes. For example if you open a switch,
>the voltage is still present on each terminal, but there is no current
>flow. (For all practical purposes.)
>
>The answers to your first 2 questions is normally no, -- but
>superconductivity, quantum mechanics, or some other exotic technology might
>say other wise. I'm no expert in those fields.

A time varying magnetic flux through a closed loop of wire will produce a 
current in the wire. This is Faraday's law of induction. Not exotic at all, 
just straight classical E&M.  Of course this would not be relevant to a 
voltage regulator IC.