Re: Yo Larry

From: Harry Dellamano (harryd_at_tdsystems.org)
Date: 03/28/05 

Date: Mon, 28 Mar 2005 15:03:57 GMT

"John Larkin" <jjSNIPlarkin@highTHISlandPLEASEtechnology.XXX> wrote in
message news:butd41ps1iqosiaisso2urf76vdihghqb9@4ax.com...
> On Sun, 27 Mar 2005 09:59:41 -0700, Jim Thompson
> Oh, about open-loop response: if in a simulation you inject a signal
> anywhere in the "closed" loop, just to have something to work with,
> can't you just observe the vector ratio of A/B, where A and B are the
> voltages at any two arbitrary nodes? That's the "open loop" transfer
> function from B to A. After all, in Spice there's no noise, and if you
> need a gain of 1e8 to resolve things, just do it.
>
> John
  Is John not correctly in stating that special injection points are not
necessary as long as the injection point is not part of the loop under
investigation? Maybe there is a gain issue with your injection point.
 Harry

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