4. For the given circuit and the given input, use convolution integral to a) find vo(t) for t≥ 0. b) find vo at t = 0.25 s. v(1) (+ 6 kn ww + v(1): 4 ΚΩ ww 100 μF ww 8 kΩ ; + v (1) - v(1) (V) 9 0.3 t (s)
4. For the given circuit and the given input, use convolution integral to a) find vo(t) for t≥ 0. b) find vo at t = 0.25 s. v(1) (+ 6 kn ww + v(1): 4 ΚΩ ww 100 μF ww 8 kΩ ; + v (1) - v(1) (V) 9 0.3 t (s)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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
Transcribed Image Text:### Problem 4: Convolution Integral in Electrical Circuits
**Objective:**
For the given circuit and the given input, use the convolution integral to:
a) Find \( v_o(t) \) for \( t \geq 0 \).
b) Find \( v_o \) at \( t = 0.25 \text{ s} \).
---
**Circuit Diagram:**
The circuit consists of the following components connected in sequence:
- A voltage source \( v_i(t) \)
- A resistor of \( 6 \text{ k}\Omega \) is in series with an inductor of \( 1 \text{ H} \)
- A parallel branch consisting of:
- A \( 4 \text{ k}\Omega \) resistor in series with a capacitor of \( 100 \mu \text{F} \)
- An \( 8 \text{ k}\Omega \) resistor
- The voltage \( v_o(t) \) is measured across the parallel branch containing the \( 4 \text{ k}\Omega \) resistor and the capacitor
---
**Input Diagram:**
The input \( v_i(t) \) is a step function:
- \( v_i(t) \) is 0 for \( 0 \leq t < 0.3 \text{ s} \)
- \( v_i(t) \) is 9 V for \( 0.3 \leq t \text{ s} \)
This can be represented as:
- A horizontal line at 0 V from time \( 0 \) to \( 0.3 \text{ s} \)
- A horizontal line at 9 V from time \( 0.3 \text{ s} \) onwards
The graph has \( v_i(t) \) on the vertical axis (in volts) and time \( t \) on the horizontal axis (in seconds).
---
**Steps to Solve Using the Convolution Integral:**
1. **Identify the system impulse response \( h(t) \):**
- Determine \( h(t) \) based on the circuit's configuration.
2. **Express the input \( v_i(t) \) as a piecewise function:**
- \( v_i(t) = 0 \) for \( 0 \leq t < 0.3 \text{ s} \)
- \( v_i(t)
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