Richard Clark wrote in message . ..

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.


Please give an example.


Slick