@barry
I completely misinterpreted that ap note, frankly got lazy, threw investigative
thoroughness out the window. Even I noticed imbalance in sign changer G,
eg. could not function as that, and then promptly forgot to go back and look
at it again. Thanks for hauling me up by the short hairs.
The sim does not seem to work with or w/o cap, makes no difference,
and sim output just looks odd.
It does, however, seem to indicate a simple peak detector from output view
with 10 uF. It just pumps up cap and the slow leakdown rate thru fdbk R
essentially holds the charge.
Regards, Dana.