Figure 3.1 shows an RLC circuit at t> 0 s. Assume a current source of 5A is applied to the circuit. The inductor has an initial current, i, (0) = 20 mA and the initial capacitor voltage, vc (0) = 10 V. Is + ve(t) iz(t) 13 C R Figure Q1 (a) Design your circuit to obtain an overdamped, critically damped, and underdamped response. For the design, choose undamped frequency, o in the range of 350 rad/s. (b) Find the expression of ve(t) and i, (t) for t≥0s for each of your circuit designin part Q1(a). Show all your calculations. L m

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### RLC Circuit Analysis and Design

**Figure 3.1** depicts an RLC circuit for \( t > 0 \) seconds. The circuit is subjected to a current source of 5A. The initial conditions are specified as follows: the inductor has an initial current of \( i_L(0) = 20 \text{ mA} \), and the initial capacitor voltage is \( v_c(0) = 10 \text{ V} \).

**Circuit Components:**
- Current Source (\( I_S \))
- Inductor (\( L \)) with current \( i_L(t) \)
- Capacitor (\( C \)) with voltage \( v_c(t) \)
- Resistor (\( R \))

**Figure Q1:**
- **Left side:** Current source (\( I_S \))
- **Middle left:** Inductor (\( L \)) 
- **Middle right:** Capacitor (\( C \)) 
- **Right side:** Resistor (\( R \))

### Tasks:

**(a)** Design your circuit to obtain an overdamped, critically damped, and underdamped response. For the design, choose an undamped frequency, \( \omega \), in the range of \( 350 \text{ rad/s} \).

**(b)** Determine the expressions for \( v_c(t) \) and \( i_L(t) \) for \( t \geq 0 \) seconds for each of your circuit designs described in part Q1(a). Ensure to show all your calculations.

### Steps to Approach the Problem:

1. **Circuit Design Analysis:**
   - **Overdamped Response:** Ensure that the damping factor (\( \zeta \)) is greater than one. The characteristic equation will yield two real and distinct roots.
   - **Critically Damped Response:** Set the damping factor (\( \zeta \)) to one. The characteristic equation will yield a repeated root.
   - **Underdamped Response:** Ensure the damping factor (\( \zeta \)) is less than one. The characteristic equation will yield complex conjugate roots.

2. **Expressions Derivation:**
   - For each type of damping, use the corresponding natural response equations.
   - Apply initial conditions to solve the unknown constants in the solution expressions.

### Sample Figure Q1 Interpretation:

In the provided RLC circuit (Figure Q1), the components are connected in series
Transcribed Image Text:### RLC Circuit Analysis and Design **Figure 3.1** depicts an RLC circuit for \( t > 0 \) seconds. The circuit is subjected to a current source of 5A. The initial conditions are specified as follows: the inductor has an initial current of \( i_L(0) = 20 \text{ mA} \), and the initial capacitor voltage is \( v_c(0) = 10 \text{ V} \). **Circuit Components:** - Current Source (\( I_S \)) - Inductor (\( L \)) with current \( i_L(t) \) - Capacitor (\( C \)) with voltage \( v_c(t) \) - Resistor (\( R \)) **Figure Q1:** - **Left side:** Current source (\( I_S \)) - **Middle left:** Inductor (\( L \)) - **Middle right:** Capacitor (\( C \)) - **Right side:** Resistor (\( R \)) ### Tasks: **(a)** Design your circuit to obtain an overdamped, critically damped, and underdamped response. For the design, choose an undamped frequency, \( \omega \), in the range of \( 350 \text{ rad/s} \). **(b)** Determine the expressions for \( v_c(t) \) and \( i_L(t) \) for \( t \geq 0 \) seconds for each of your circuit designs described in part Q1(a). Ensure to show all your calculations. ### Steps to Approach the Problem: 1. **Circuit Design Analysis:** - **Overdamped Response:** Ensure that the damping factor (\( \zeta \)) is greater than one. The characteristic equation will yield two real and distinct roots. - **Critically Damped Response:** Set the damping factor (\( \zeta \)) to one. The characteristic equation will yield a repeated root. - **Underdamped Response:** Ensure the damping factor (\( \zeta \)) is less than one. The characteristic equation will yield complex conjugate roots. 2. **Expressions Derivation:** - For each type of damping, use the corresponding natural response equations. - Apply initial conditions to solve the unknown constants in the solution expressions. ### Sample Figure Q1 Interpretation: In the provided RLC circuit (Figure Q1), the components are connected in series
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