I want to analyze the cutoff frequencies, order and Qs of filters inside a complicated electronic circuit. Instead of solving equations, as a rookie I find using SPICE a lot easier. However, the results so far don't speak for themselves, for example take the band-pass filter:
After connecting the IN and OUT to an AC battery and then running a SPICE simulation in order to graph the frequency and phase response, the results aren't even indicative of a band-pass filter. What needs to be done in order to make the approach work?