< Practical Electronics

A circuit of 3 components connected in series

Circuit's response

Equilibrium Response

At Equilibrium, the sum of all volatages equal to zero

The equation above can be written as below


With

Roots of 2nd ordered differential equation above

Resonance Response

The total impedance of the circuit

At the total impedance of the circuit is Z = R . Therefore, current is equal to
At , Capacitor opens circuit . Therefore, current is equal to zero
At , Inductor opens circuit . Therefore, current is equal to zero
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