Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
Section: Chapter Questions
Problem 22RQ
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Question

R1 = 22 k and R2 = 360 k in the amplifier
circuit as shown. (a) What is the output
voltage if vI = 0? (b) What is the output voltage
if a dc signal VI = 0.33 V is applied to the circuit?
(c) What is the output voltage if an ac signal
vi = 0.18 sin 3250 πt V is applied to the circuit?
(d) What is the output voltage if the input signal is
vI = 0.33 − 0.18 sin 3250πt V? (e) Write an expression
for the input current iI for parts (b), (c), and
(d). (f) Write an expression for the op amp output
current iO for the input signals in parts (b), (c) and
(d). (g) What is the voltage at the inverting input of
the op amp for the input signal in part (d)?

i,
R2
R1
Transcribed Image Text:i, R2 R1
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