Re: Saturation/the real meaning?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-uswest-dot-net>" <bert.hickman-at-aquila-dot-net>

Harvey,

You've got it exactly right - once we begin to saturate the magnetic
permeability significantly declines, becoming perhaps 1/1000 of that prior
to saturation. So once we've reached sufficient current flow to saturate
the core, there will be a marked decrease in the effective inductance (from
that point on), and thus a much lower inductive reactance. You'll you see a
sudden increase in current flow with any further increase in applied
voltage as the effective inductance begins to act more and more like that
of a air core coil.

-- Bert --
-- 
Bert Hickman
Stoneridge Engineering
Email:    bert.hickman-at-aquila-dot-net
Web Site: http://www.teslamania-dot-com

Tesla list wrote:
> 
> Original poster: "harvey norris by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <harvich-at-yahoo-dot-com>
> 
> I see numerous posts where it is mandated that when a
> ballast method is being used to control the amperage
> input to a tesla coil, that if the inductor is
> saturated this will cause its amperage consumption to
> go way up. I can accept that fact. But I cannot accept
> the numerous quotes I have seen where it is
> additionally stated that at saturation the inductance
> or impedance goes to zero, which is the cause for the
> large amperages. Perhaps I have misread the context or
> meaning of that statement.

<SNIP>
> So here in this situation
> because at saturation, more and more field lines are
> travelling through air as flux leakage, that core is
> simply beginning to act more as the reduced impedance
> inherent in a hybrid/air/iron core inductor would
> give. Yes the acting impedance will definitely go
> down, but where is the rationale made to be stating
> that it has vanished?
> 
> Perhaps the more educated among list members can make
> an opinion here. I have been wrong before and am very
> glad the list can serve as a forum to set things
> right. Thats what they call a learning process!
> 
> Sincerely Harvey D Norris
> 
> =====
> Binary Resonant System  http://members3.boardhost-dot-com/teslafy/
> 
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