Voltage follower

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...
Question

find Vout / Vin

**Voltage Follower Circuit Diagram**

This diagram represents a voltage follower, also known as a buffer amplifier circuit. It is implemented using an operational amplifier (op-amp).

- **Components:**
  - The op-amp symbol is shown in the center, labeled with "A". The op-amp has two inputs: the inverting input (denoted by a minus sign, "-") and the non-inverting input (denoted by a plus sign, "+").
  - The inverting input is connected to the output, forming a feedback loop.
  - The non-inverting input is connected to the input voltage source, labeled as \( V_{in} \). The source is grounded on one side.
  - The output of the op-amp is labeled as \( V_{out} \).

- **Function:**
  - The purpose of a voltage follower is to replicate the input voltage (\( V_{in} \)) at the output (\( V_{out} \)) without altering the voltage level. It provides high input impedance and low output impedance, making it ideal for impedance matching applications.

This simple yet powerful configuration ensures that the output voltage follows the input voltage exactly, making it invaluable in various electronic circuits.
Transcribed Image Text:**Voltage Follower Circuit Diagram** This diagram represents a voltage follower, also known as a buffer amplifier circuit. It is implemented using an operational amplifier (op-amp). - **Components:** - The op-amp symbol is shown in the center, labeled with "A". The op-amp has two inputs: the inverting input (denoted by a minus sign, "-") and the non-inverting input (denoted by a plus sign, "+"). - The inverting input is connected to the output, forming a feedback loop. - The non-inverting input is connected to the input voltage source, labeled as \( V_{in} \). The source is grounded on one side. - The output of the op-amp is labeled as \( V_{out} \). - **Function:** - The purpose of a voltage follower is to replicate the input voltage (\( V_{in} \)) at the output (\( V_{out} \)) without altering the voltage level. It provides high input impedance and low output impedance, making it ideal for impedance matching applications. This simple yet powerful configuration ensures that the output voltage follows the input voltage exactly, making it invaluable in various electronic circuits.
Expert Solution
Step 1

Voltage follower is an Opamp circuit whose output voltage straight away follows the input voltage. That is output voltage is equivalent to the input voltage.

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