Natural response and step response

AI Thread Summary
In a circuit with a current source in parallel with an inductor, resistor, and capacitor, the behavior is not strictly classified as a natural or step response. A step response occurs when a sudden change, like a switch being flipped, introduces a new source to the circuit. Conversely, a natural response refers to the behavior of the circuit due to initial conditions, where energy stored in capacitors or inductors dissipates over time. If the current source has a step function, it will create a step response; otherwise, the circuit's behavior is simply a result of its configuration. Understanding these concepts is crucial for analyzing circuit dynamics effectively.
2slowtogofast
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ok i need some clarification if you have a circuit where a current source is in parallel with an inductor a resistor and a capacitor is this considered a natural response or a step response. I guess i thought a step response is if a switch is switched and a source is added then it is a step response not if it was there the whole time.
 
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Not sure what a "natural response" is... Perhaps it means the steady-state behavior since "step response" is pretty much what you describe: how the circuit behaves when a sudden change in voltage or current is applied.
 
2slowtogofast said:
ok i need some clarification if you have a circuit where a current source is in parallel with an inductor a resistor and a capacitor is this considered a natural response or a step response.
Neither. It's just considered a circuit.

If the current source contains a step then there will be a step response. If there are nonzero initial conditions then there will be a natural response.
 
natural response means the a capacitor/inductor is discharging such that after a long time, the voltage and currents approaches 0

step response is when a source will try to charge the inductors capacitors such that after a long time, the capacitors/inductors connected will be charged. if the capacitors/inductors have high initial voltage/current than what the source has to offer they can discharge until it reaches a steady charged state with a lower voltage/current. please correct me, this is how i understand step and natural response
 
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