On Tue, 20 Feb 2007 03:13:52 GMT, james wrote
in :

On Mon, 19 Feb 2007 12:43:12 -0800, Frank Gilliland
wrote:

+++On Mon, 19 Feb 2007 19:12:33 GMT, james wrote
+++in :
+++
+++On Sun, 18 Feb 2007 18:24:33 -0800, Frank Gilliland
wrote:
+++
++++++Conjugate match is needed for maximum power transfer.
++++++
++++++
++++++IMPEDANCE match... for maximum power transfer. A 'conjugate' match is
++++++when the impedances are complex, which isn't always the case.
+++***********
+++
+++I have found that it is rare in the real world that impeadances are
+++not complex. Outside transimission lines, there is little that is not
+++complex.
+++
+++
+++You just said that resistors have complex impedance and transmission
+++lines are flat.
+++
************

No I did not.


Go back and read your own words again.


Besides Resistors can have complex impedances depending
upon constrtuctinand frequency in which they are used.


When a resistor is used at its intended frequency, any reactance is
insignificant. If it wasn't then it would be called an 'inductor' or
'capacitor'.


+++
+++ Then again when you conjugate match, the imaginary part of
+++the complex impedances is nulified and you are then left with the real
+++part.
+++
+++
+++Reactances don't just disappear. They create a current between the
+++source and load that must be assessed to see if it is going to cause
+++any problems. Sometimes it doesn't and sometimes it does.
+++
+++
***********

I did not say they disappeared. At resonance the conjugate match
causes the net reactance to be zero. Thus nulify. The reactance are
always there.


Notwithstanding the fact that the non-reactive component of impedance
changes at or near resonance, maximum power transfer (due to matched
impedances) occurs regardless of whether those impedances are reactive
or not. Hence "impedance match" instead of the more limited "conjugate
match". As for your assertion that non-reactive impedances are rare in
the "real world", maybe you should describe -your- "real world" and
how it differs from the rest of reality.