Re: [TCML] NST Measurements

[G Hunter <dogbrain_39560@xxxxxxxxx>]

This is normal behavior for inductors and transformers with ferromagnetic cores.  As the current increases, the core magnetizes more, and inductance decreases.  As the core approaches saturation, inductance drops off rapidly.  This is the operating principle of saturable reactor current controllers.  This is also why an iron core inductor or transformer will show one value to a digital inductance meter using a small test current, but exhibit an entirely different reactance in an actual power circuit.

Cheers,

Greg


--- On Thu, 1/15/09, Finn Hammer <f-h@xxxx> wrote:

> From: Finn Hammer <f-h@xxxx>
> Subject: Re: [TCML] NST Measurements
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Date: Thursday, January 15, 2009, 11:58 AM
> Bart,
> 
> I guess it`s time to ask:
> Why does inductance change with current?
> 
> Cheers, Finn Hammer
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
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