[ List Subjects ][ Main Page ]
Subject: charge amp spice sim
[ View Followups ][ Post Followup ]
Date: 09/18/02 at 8:56 PM
Posted by: Alex
I'm trying to simulate a charge amp in Spice. The setup is a variable capacitor as Cin, and a parallel RC circuit in the feedback path of an ideal op amp. I've biased one side of the capacitor to a dc source, and the non-inverting pin of the op amp is set to ground.
I'm not getting what I'd expect, namely the ac current out of the variable capacitor is zero.
Post a Follow-up: