2. In this circuit the op-amp may be considered to be idealand it is not saturated. It drives a load of unspecifiedresistance.A. Approximately what is the voltage V+?B. What is the voltage V-?C. Therefore, what is the current iL and what is thepurpose of this circuit?D. If R1 is increased by a factor exp(1) or e, what is theexpected change in i use the I-V characteristicrelationship for a diode)VsqRIR2KV-Load 3. In this circuit R1=100ks2, R2=25ks2, Rc-25k2, Re-5km2, C=1 μF and the ß of the transistorat its DC operating point is 100A. If Ib is negligible, what is the steady state(DC) value of Vb?B. In that case, using a standard simplifiedmodel of the transistor, determine the DCvalues of Vc and Ve.RIVcc=10VIbReVbC. Estimate the DC value of Ib in that caseD. If this value of Ib is accounted for incalculating Vb, then how much does itchange from your answer in A?E. Approximately what is the time constantof the high-pass filter made up by C andthe rest of the circuit?F. For AC signal frequencies well above the high-pass cut-off, what are the small signalvoltage gains of the circuit at the outputs i.e. vc/vi and ve/vi?VeReVe

Since you have posted multiple questions, we will solve question number 2 for you. If you require to…

In this circuit the op-amp may be considered to be ideal and it is not saturated. It drives a load of unspecified resistance. A. Approximately what is the voltage V+? B. What is the voltage V-? C. Therefore, what is the current iL and what is the purpose of this circuit?

In this circuit the op-amp may be considered to be ideal and it is not saturated. It drives a load of unspecified resistance. A. Approximately what is the voltage V+? B. What is the voltage V-? C. Therefore, what is the current iL and what is the purpose of this circuit?

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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Concept explainers

Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.

Question

2. In this circuit the op-amp may be considered to be ideal
and it is not saturated. It drives a load of unspecified
resistance.
A. Approximately what is the voltage V+?
B. What is the voltage V-?
C. Therefore, what is the current iL and what is the
purpose of this circuit?
D. If R1 is increased by a factor exp(1) or e, what is the
expected change in i use the I-V characteristic
relationship for a diode)
Vsq
RI
R2
K
V-
Load

3. In this circuit R1=100ks2, R2=25ks2, Rc-25k2, Re-5km2, C=1 μF and the ß of the transistor
at its DC operating point is 100
A. If Ib is negligible, what is the steady state
(DC) value of Vb?
B. In that case, using a standard simplified
model of the transistor, determine the DC
values of Vc and Ve.
RI
Vcc=10V
Ib
Re
Vb
C. Estimate the DC value of Ib in that case
D. If this value of Ib is accounted for in
calculating Vb, then how much does it
change from your answer in A?
E. Approximately what is the time constant
of the high-pass filter made up by C and
the rest of the circuit?
F. For AC signal frequencies well above the high-pass cut-off, what are the small signal
voltage gains of the circuit at the outputs i.e. vc/vi and ve/vi?
Ve
Re
Ve

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