ELCT 371: Spring 2011
Homework #2 (based on Chapter 2)
Topics covered: Inverting and noninverting opamps, summing point constraint, Gain
vs. frequency, opamp limitations.
Due: February 22, 2011 (in class)
1.
Each of the circuits shown in Figure P2.10 employs negative feedback. Assume that
the op amps are ideal, and use the summingpoint constraint. Analyze the circuits
to find the value of Vo for each circuit.
2.
Determine the closedloop voltage gain of the circuit shown in Figure P2.14,
assuming an ideal op amp. All of the resistors are equal in value.
3.
The circuit shown in Figure P2.18 employs negative feedback. Use the
summingpoint constraint (for both op amps) to derive expressions for the voltage
gains
A
1
= vo
1
/
v
in
and
A
2
= vo
2
/
v
in.
4
.
Find an expression for the power gain of each of the amplifiers shown in Figure
P2.24, Assume ideal op amps. Which circuit has the higher power gain?
5.
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 Spring '08
 KOLEY
 Amplifier, Operational amplifier applications

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