/diy/ - Do It Yourself

Sorry for the newb question, taking a course in entry-level elctropsychics and one assignment is to build a envelope detector as you can see.

What I don't get is that the last capacitor is supposed (according several independently different sources) to remove the DC voltage and make the signal AC voltage again but fucking regardless what values I put in the signal I always get the same result as if I didn't have the last capacitor in the first place.

Even tried with different circuit simulators, it's fucking driving me nuts.