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Choose values for Rf1, Ra and Rb so the output of the second stage = 4v1 - 5v2. V1 Rf1 1kQ. A-35.0V Rb 741 STAGE 1 1kQ Ra V2 -35.0V 35.0V 741 STAGE 2 35.0V O Rf1 = 1k, Ra = 200ohms, Rb-250ohms Rf1 = 1k, Ra= 5k, Rb = 4k O Rf1 = 4k, Ra= 5k, Rb = 250ohms O Rf1 = 250ohms, Ra = 200ohms, Rb=250ohms %3D

Choose values for Rf1, Ra and Rb so the output of the second stage = 4v1 - 5v2. V1 Rf1 1kQ. A-35.0V Rb 741 STAGE 1 1kQ Ra V2 -35.0V 35.0V 741 STAGE 2 35.0V O Rf1 = 1k, Ra = 200ohms, Rb-250ohms Rf1 = 1k, Ra= 5k, Rb = 4k O Rf1 = 4k, Ra= 5k, Rb = 250ohms O Rf1 = 250ohms, Ra = 200ohms, Rb=250ohms %3D

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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# Operational Amplifier Circuit Design ## Problem Statement Choose values for \( Rf1 \), \( Ra \), and \( Rb \) so the output of the second stage equals \( 4V1 - 5V2 \). ## Circuit Diagram ### Stage 1 - **Input Voltage:** \( V1 \) - **Resistor Rf1:** Variable resistor connected in feedback - **Operational Amplifier (Op-Amp):** 741 - **Feedback:** Negative feedback with \( 1k\Omega \) and \( Rf1 \) ### Stage 2 - **Input Voltage:** \( V2 \) - **Resistors:** \( Rb \) in feedback loop, connected to \( Ra \) - **Operational Amplifier (Op-Amp):** 741 ### Power Supply - **Voltage Supply for Op-Amps:** \(\pm 35V\) ## Options for Resistor Values 1. \( Rf1 = 1k\Omega, Ra = 200\Omega, Rb = 250\Omega \) 2. \( Rf1 = 1k\Omega, Ra = 5k\Omega, Rb = 4k\Omega \) 3. \( Rf1 = 4k\Omega, Ra = 5k\Omega, Rb = 250\Omega \) 4. \( Rf1 = 250\Omega, Ra = 200\Omega, Rb = 250\Omega \) ## Objective Match the gain configuration to achieve the required equation \( 4V1 - 5V2 \) for the second stage output by selecting appropriate resistor values from the given options.
Transcribed Image Text:# Operational Amplifier Circuit Design ## Problem Statement Choose values for \( Rf1 \), \( Ra \), and \( Rb \) so the output of the second stage equals \( 4V1 - 5V2 \). ## Circuit Diagram ### Stage 1 - **Input Voltage:** \( V1 \) - **Resistor Rf1:** Variable resistor connected in feedback - **Operational Amplifier (Op-Amp):** 741 - **Feedback:** Negative feedback with \( 1k\Omega \) and \( Rf1 \) ### Stage 2 - **Input Voltage:** \( V2 \) - **Resistors:** \( Rb \) in feedback loop, connected to \( Ra \) - **Operational Amplifier (Op-Amp):** 741 ### Power Supply - **Voltage Supply for Op-Amps:** \(\pm 35V\) ## Options for Resistor Values 1. \( Rf1 = 1k\Omega, Ra = 200\Omega, Rb = 250\Omega \) 2. \( Rf1 = 1k\Omega, Ra = 5k\Omega, Rb = 4k\Omega \) 3. \( Rf1 = 4k\Omega, Ra = 5k\Omega, Rb = 250\Omega \) 4. \( Rf1 = 250\Omega, Ra = 200\Omega, Rb = 250\Omega \) ## Objective Match the gain configuration to achieve the required equation \( 4V1 - 5V2 \) for the second stage output by selecting appropriate resistor values from the given options.
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