In my lab we did an experiment using an RLC parallel circuit, with the L and C in parallel. The voltage source was set at square waves. I am being asked to explain why there are frequencies, beyond the resonance, at which there is a peak voltage drop across the capacitor.
For example, in my circuit the resonance is at 9.382khz, and then there are subsequent peak voltage drops across C at:
1.878 khz, 1.342 khz, 1.043 khz... each resonant peak with a lesser voltage drop than the previous.
I have a feeling this has to do with the fourier components of the square wave, but I can't wrap my head around this. Any hints? Thanks in advance.