Answered: i, R2 R1

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 v_I = 0? (b) What is the output voltage
if a dc signal V_I = 0.33 V is applied to the circuit?
(c) What is the output voltage if an ac signal
v_i = 0.18 sin 3250 πt V is applied to the circuit?
(d) What is the output voltage if the input signal is
v_I = 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 i_O 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)?

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