Instrumentation amplifier The following circuit is called an instrumental amplifier. It is very often used to amplify small sensor signals. It has an advantage of large input impedance (draw almost zero currents), and amplifies only the difference of the two input signals V1 and V2. Take note that all three op-amps have negative feedback and follow the op-amp golden rules. a) Find the current I through the resistor Rgain. What are the current(s) through the R₁ resistors? b) Use part a) to deduce Vx and Vy. c) Show that the gain of the op-amp can be expressed in the form: 1+ 2R, R₁ Rain R₂ V₂ 담대하 A₂

Instrumentation amplifier The following circuit is called an instrumental amplifier. It is very often used to amplify small sensor signals. It has an advantage of large input impedance (draw almost zero currents), and amplifies only the difference of the two input signals V1 and V2. Take note that all three op-amps have negative feedback and follow the op-amp golden rules. a) Find the current I through the resistor Rgain. What are the current(s) through the R₁ resistors? b) Use part a) to deduce Vx and Vy. c) Show that the gain of the op-amp can be expressed in the form: 1+ 2R, R₁ Rain R₂ V₂ 담대하 A₂

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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