RLC filter

A RLC circuit is an electrical circuit consisting of a resistor (R), and inductor (L) and a capacitor (C), connected in series or in parallel. The name of the circuit is derived from the letters used to denote the constituent components of the circuit, where the sequence of the components may vary from RLC. A RLC circiut can be used as a band-pass filter, band-stop filter, low-pass filter or a high-pass filter. The RLC filter is described as a second-order circuit, meaning that any voltage or current in the circuit can be described by a second-order differential equation in circuit analysis.


Learning goals:
  • Independent Sources (Pulse generator)


What does the frequency response look like for the two schematics below?

How does the phase look for each schematic?

How does a step function look?



Use PSpice to see if your calculations match the results you get from PSpice



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