I am learning about RLC circuits in my Circuits Analysis class and I had a question regarding Parallel RLC step responses.
In the book, they only provide examples of RLC circuits with a current source, such as the one below.
The circuit and equations that go along with it make sense to me, but I started thinking about voltage sources, such as the one below.
This brings up a couple of questions:
- Does the voltage change across the resistor, inductor or capacitor? According to KVL it would be 12V once the switch is closed. Does this produce a step response at all then?
- When the switch is closed, the voltage across the capacitor goes from 0V(assuming no energy initially) to 12V because KVL would be violated otherwise. Wouldn't this be an instantaneous change, which cannot occur in capacitors?
- What happens when you put a current source in a series RLC circuit? This raises similar questions.
Thanks for any help provided.