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Re: [TCML] Greg's input on inductance



Dr. Resonance wrote:

It appears even seasoned members of the list are getting confused with the
fundamental physics of electrical circuits.

Greg's quote: An interesting line of reasoning! Unfortunately, it is
impossible to independently 'change either one' without changing the other;
they will always move together, in a fixed ratio that defines the inductance.
Consider what would happen if you could set just the Amperes value to zero.
Do you really believe it would yield infinite inductance?


>

Now consider what he said ---  if you set the AMP value to Zero what do you
really have…..STATIC… you have a potential difference but no current which
means no movement and no induced voltage so…inductance does not even come
into play until there is an EMF built up some how through a changing field
and if you have a TON voltage but you have nothing to push then you have
static potential energy

You can change either one independently through either constant voltage
control or constant current control… however no one does it in Tesla coil
work or I have never seen it done.

Dr. Resonance


OK, I'll bite... Show us a real circuit where you can independently change the volt-seconds applied to an inductor, and the current through the inductor. Extreme cases involving saturation, resistive limits or distributed C don't count, since Faraday's Law would not apply.

There's a solid reason why you've never seen this done in Tesla Coil work.

Paul Nicholson provides an accurate summary on inductance here:
http://www.pupman.com/listarchives/2009/Jun/msg00269.html


-GL
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