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Human skin, especially when damp, is a reasonable conductor of electricity. We want to design a circuit that will output 10V when it is not being touched by two fingers and -10V when it is being touched by two fingers. The circuit bellow is a prototype of such a circuit. Between A and C Between B and C Between A and B M 2451 kQ w • IC 7 -100 + Part A To achieve the desired functionality, between which 2 points would your finger contacts need to be made? Hint: Think of your fingers as being resistors. ANSWER: +10v Part B - Assuming both resistors depicted have the same resistance R and your fingers have a resistance of 10 k, what is the smallest value for R that achieves the desired functionality? You did not open hints for this part. ANSWER:

Human skin, especially when damp, is a reasonable conductor of electricity. We want to design a circuit that will output 10V when it is not being touched by two fingers and -10V when it is being touched by two fingers. The circuit bellow is a prototype of such a circuit. Between A and C Between B and C Between A and B M 2451 kQ w • IC 7 -100 + Part A To achieve the desired functionality, between which 2 points would your finger contacts need to be made? Hint: Think of your fingers as being resistors. ANSWER: +10v Part B - Assuming both resistors depicted have the same resistance R and your fingers have a resistance of 10 k, what is the smallest value for R that achieves the desired functionality? You did not open hints for this part. ANSWER:

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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Human skin, especially when damp, is a reasonable conductor of electricity. We want to design a circuit that will output 10V when it is not being touched by two fingers and -10V when it is being touched by two fingers. The circuit below is a prototype of such a circuit. Between A and C Between B and C Between A and B M 2451 KQ w A B to T -100 1- 1+ Part A To achieve the desired functionality, between which 2 points would your finger contacts need to be made? Hint: Think of your fingers as being resistors, ANSWER: +10v • Vout Part B - Assuming both resistors depicted have the same resistance R and your fingers have a resistance of 10 k, what is the smallest value for R that achieves the desired functionality? You did not open hints for this part. ANSWER:
Transcribed Image Text:Human skin, especially when damp, is a reasonable conductor of electricity. We want to design a circuit that will output 10V when it is not being touched by two fingers and -10V when it is being touched by two fingers. The circuit below is a prototype of such a circuit. Between A and C Between B and C Between A and B M 2451 KQ w A B to T -100 1- 1+ Part A To achieve the desired functionality, between which 2 points would your finger contacts need to be made? Hint: Think of your fingers as being resistors, ANSWER: +10v • Vout Part B - Assuming both resistors depicted have the same resistance R and your fingers have a resistance of 10 k, what is the smallest value for R that achieves the desired functionality? You did not open hints for this part. ANSWER:
Expert Solution
Step 1

Given data

The range of the output voltages is ±10 V.

input voltage, VA=2 V

input voltage, VB=2 V

To find out

We have to find out the two points between which we can put finger contacts in the op-amp.

We have to also find out the minimum value of input resistance for the terminal A and B.

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