Seems to me this thread has gone off track, as many do after the first three or
four responses.

This thread was started with Bob's fine treatise on proof of the existence of
non-dissipative resistance, a resistANCE that cannot be duplicated with a
resisTOR. But the thread went astray.

Non-dissipative resistance is not well accepted or understood by many otherwise
well informed engineers, because it has had little or no (or even incorrect)
treatment in EE courses. This is because the profs by habit generally used only
the classical generator as the source in treating network theory. The classical
generator is always considered to have a dissipative internal resistive source.
Consequently, the profs never considered treatment of a source having other than
a 50 percent maximum efficiency. All the equations I'm familiar with show
clearly that 50 percent is all yer gonna get.generally

Unfortunately, the profs of my ken never tried to understand the reason the
efficiencies of Class B and C amps exceed 50 percent. Fortunately, Bob Lay comes
along with proof that there really is resistance established only by the RATIO
of voltage to current with no dissipation whatever to heat or radiation.

Bob's paper furnishes further proof of my own proof that dissipationless
resistance exists. I presented my proof in Chapter 19, and Appendices 9, 10, and
11 in Reflections 2. For those who are interested in reviewing my writings
there, but who don't have a copy of Reflections 2, those references are on my
web page at http://home.iag.net/~w2du.

For a short preview, take note that in Class B and C amps the DC source power
goes to only TWO places, 1) the power that is dissipated in the cathode/plate
resistance, which transitions to heat, and 2) the power dissipated in the load.
Note also, the source resistance at the output of the tank circuit is linear,
time invariant, and determined solely by the voltage/current ratio at the output
of the tank. The reason is that that the energy storage of the tank isolates the
non-linear input portion of the amp from the linear output portion. With
sufficient Q the output wave form is a near-perfect sine wave, thus verifying
linearity.

Also, data obtained from my measurements of the source resistance of Class B and
C power amps shows that when the plate tuning and loading conrtrols are adjusted
to deliver all the available power at a nominal drive level, the source and load
resistance are equal. Consequently, if the power dissipated in the cathode/plate
resistance plus the power dissipated in the load equals the DC input power,
there can be no power dissipated in the source resistance.

And finally, with the source resistance non-dissipative, it cannot absorb any
power reaching it from a mismatched termination down stream, which is why no
reflected power is absorbed in the amp.

Eric Nichols, KL7AJ, operates multi megawatt ionospheric sounding rigs in
Alaska. The water cooling the water-cooled amp tubes is carefully measured
calorimetrically. He has observed over a period of many years that the water
temperature remains the same, no matter what the SWR at the input of load line
is, proving there is no reflected power absorbed in the amplifier. Of course the
tank circuit elements are re-adjusted to deliver all the available power, what
ever the input impedance of the line may be.

Howabout if we give Bob's paper a somewhat more open-minded review. Crap? That
criticism of Bob's paper is where the crap is!

Walt, W2DU