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Rf i, R| R2 - 두

Rf i, R| R2 - 두

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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How can I find the gain of this op amp circuit?

 

This image depicts an inverting operational amplifier (op-amp) circuit. ### Circuit Components: 1. **Voltage Source (\( V_s \))**: - Positioned on the left, it provides the input voltage to the circuit. 2. **Resistors**: - \( R_1 \): Connected in series with the input voltage \( V_s \). The current flowing through this resistor is labeled \( i_1 \). - \( R_2 \): Connected to the inverting input (-) of the op-amp and to the ground. The current flowing through this resistor is labeled \( i_2 \). - \( R_f \): The feedback resistor, connected from the output to the inverting input. The current flowing through this resistor is labeled \( i_f \). 3. **Operational Amplifier**: - An inverting op-amp is depicted, with symbols for the inverting (-) and non-inverting (+) terminals. - The output voltage is labeled \( V_o \). ### Current Directions: - \( i_1 \): The current flowing into \( R_1 \) from the voltage source. - \( i_2 \): The current flowing downward through \( R_2 \) to the ground. - \( i_f \): The feedback current flowing from the op-amp output through \( R_f \). ### Configuration: - **Inverting Input**: The input signal is connected to the inverting terminal of the op-amp. - **Feedback Loop**: The feedback resistor \( R_f \) is connected from the output to the inverting input, creating a feedback loop. This configuration amplifies the input voltage, inverting its phase, and determines the output voltage \( V_o \) based on the values of the resistors and the input voltage.
Transcribed Image Text:This image depicts an inverting operational amplifier (op-amp) circuit. ### Circuit Components: 1. **Voltage Source (\( V_s \))**: - Positioned on the left, it provides the input voltage to the circuit. 2. **Resistors**: - \( R_1 \): Connected in series with the input voltage \( V_s \). The current flowing through this resistor is labeled \( i_1 \). - \( R_2 \): Connected to the inverting input (-) of the op-amp and to the ground. The current flowing through this resistor is labeled \( i_2 \). - \( R_f \): The feedback resistor, connected from the output to the inverting input. The current flowing through this resistor is labeled \( i_f \). 3. **Operational Amplifier**: - An inverting op-amp is depicted, with symbols for the inverting (-) and non-inverting (+) terminals. - The output voltage is labeled \( V_o \). ### Current Directions: - \( i_1 \): The current flowing into \( R_1 \) from the voltage source. - \( i_2 \): The current flowing downward through \( R_2 \) to the ground. - \( i_f \): The feedback current flowing from the op-amp output through \( R_f \). ### Configuration: - **Inverting Input**: The input signal is connected to the inverting terminal of the op-amp. - **Feedback Loop**: The feedback resistor \( R_f \) is connected from the output to the inverting input, creating a feedback loop. This configuration amplifies the input voltage, inverting its phase, and determines the output voltage \( V_o \) based on the values of the resistors and the input voltage.
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