Power supply cap considerations??

studiot

Joined Nov 9, 2007
4,998
Colin you are right that there is always resistance, however small, and that it plays its part.

However the formulae I gave back in post#12 are the result of integrating

\(\frac{R}{L}dt = \frac{{di}}{{I - i}}\)

assuming L to be constant

If L is in fact a function of current (or therefore time) the maths gets rapidly hairy.

L changes because the core susceptibility changes as more magnetic materia in Sgt Wookie's example, l is drawn in, because it is free to do so and mechanically configured to do so.
 
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