On Sat, 12 Jun 2010 10:43:37 -0700 (PDT), K1TTT
wrote:

that assumes the source is linear... with a non-linear source it is
much more complicated to describe the full range of it's response.
you would have to do a series of output voltage vs current curves for
a range of impedances.

Ah!

But the difference is that no one is going to go to the bench to see
if this holds true and roll with the punch if they are surprised that
it works out perfectly.

73's
Richard Clark, KB7QHC