Re: [TCML] Secondary current in an old TCBA Article

[Paul Nicholson <tcml88@xxxxxxxxxxx>]

Phil Tuck quoted:
> "maximum current flow in the secondary inductor is
>  independent of the effect of the primary inductor
>  and the current flowing in the secondary inductor
>  depends primarily only on the design of the secondary
>  inductor. ..."

That's a fair statement.  The max secondary current depends on
its inductance.  The initial firing energy transfers eventually
into the secondary and conservation of energy means the resulting
secondary current obeys

 E = 0.5 * Lsec * Imax^2

where E is the transferred energy (net of losses).

The location within the secondary winding where the current
is highest is a little more complicated - it is usually just
a little above the secondary base but the precise location
depends on secondary h/d ratio and amount of toploading.

> what was meant by the 'complex one-sided relationship',

Probably that, ignoring losses, the max current depends only
on the secondary inductance and not the primary inductance or
coupling coefficient.
--
Paul Nicholson
--

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