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Re: [TCML] inductance vs. current in a RF inductor



Dr. Resonance wrote:

What is inductance?

It is NOT based on the general rule for inductive reactance. It goes back
beyond that to Faraday's Laws of Induction.

It is all based on counter EMF arising from Faradays law --- the counter EMF
generated to oppose a given change in current. The unit of inductance from
the equation is:


L = Volt second / Amps = Henry

Notice that this fundamental physics equation derives inductance from
Amperes.

[snip]


There is a critical error in this last sentence. Inductance is not the value being derived, it is the independent variable. This equation is deriving the relation between volt-seconds and amperes, based upon the given inductance.

Confusing the dependent and independent variables in equations is a common source of error. The dependent variables cannot change the independent ones. A detailed explanation is given here:

http://en.wikipedia.org/wiki/Dependent_variable

-GL
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