An equation which describes v 0 as a function of v i and position x of the movable contact of the voltage divider is to be derived for the figure shown below. Concept introduction: An inverting amplifier circuit is shown here. Variable resistance is used when one part from 0 to position of the contact x, appears in the feedback loop and the remaining portion appears at the input. Since the op-amp has very high input resistance, input current will be entirely flowing through the feedback loop. Using this, we can find the output voltage in terms of the position x and input voltage v i .

BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 3, Problem 3.7QAP
Interpretation Introduction

Interpretation:

An equation which describes v0 as a function of vi and position x of the movable contact of the voltage divider is to be derived for the figure shown below.

Principles of Instrumental Analysis, Chapter 3, Problem 3.7QAP

Concept introduction:

An inverting amplifier circuit is shown here. Variable resistance is used when one part from 0 to position of the contact x, appears in the feedback loop and the remaining portion appears at the input. Since the op-amp has very high input resistance, input current will be entirely flowing through the feedback loop. Using this, we can find the output voltage in terms of the position x and input voltage vi.

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