On 29 Aug 2003 13:41:35 -0700, (Dr. Slick) wrote:


"gasp!" ...saved by a lifesaver of logic while drowning
in the Sea of Ignorance!

Thank you Bill. This is probably why they say that
an oscillator has negative resistance (postitive feedback),
and also why the stability circles have their centers located
outside the unit 1 Radius. Clearly, areas outside the
rho=1 circle on the Smith, are reserved for active networks.


Slick


Hi OM,

This does not follow logically. Active networks exhibit this behavior
and offer a library full of applications. Strained passive networks,
as evidenced by other correspondence, also reside in this "forbidden
region" but their number are significantly smaller and for good
reason.

Those examples were "strained" for the purpose of your education and
rarely offer engineering coupes of design. More often they represent
the "gotcha's" of technical oversight and unplanned failure modes. As
such these side-bars offer insight, but hardly have the horsepower to
pull the load.

Both sides of the debate can whip that horse, but it ain't moving
another inch for anyone.

As for a horse of a different color, how well tutored are you to
handle specifying the loss in a system of two resistors and a hank of
line? (Line loss is the characteristic being sought.) No prizes are
offered, but you have and excellent prospect of beating the experts to
the crossing line.

It's as simple as giving even an incorrect answer! :-)

As the rich and powerful offer, the better part of success is just in
showing up.

73's
Richard Clark, KB7QHC