On Fri, 12 Oct 2007 01:55:12 +0100, "john jardine"
wrote:


"The Phantom" wrote in message
.. .
As promised.


[Useful reading. But yes, there's caveats with the 'x2' limit.]

Attached, a contrived, LTspice structure, giving 2 gain.

In the Epstein paper, he says that the gain is 2 if the network is a
general ladder network. At the end of the paper, he admits he has now
formal proof.

The example you've given would seem to indicate that, using ideal
components with mathematically unlimited values, the gain obtainable is
unbounded.