COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 8.
Show that the circuit of Figure P8.8 is a noninverting summing amplifier.
Figure P8.8
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 22.
Consider the circuit of Figure P8.22.
a. If v1 − v2 = cos (1, 000t ) V, find the peak amplitude of vout .
b. Find the phase shift of vout .
[Hint: Use phasor analysis.]
Figure P8.22
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 44.
Find an expression for the output voltage in the circuit of Figure P8.44.
Figure P8.44
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 54.
The op-amp circuit shown in Figure P8.53 is used as a filter.
C = 200 pF
R1 = 10 k Ω
RL = 1 k Ω
R2 = 220 k Ω
Determine
a. Whether the circuit is a low- or high-pass filter.
b. The gain Vo /Vs in decibels in the passband, that is, at the frequencies being passed
by the filter.
c. The cutoff frequency.
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 55.
The circuit shown in Figure P8.55 is an active filter with
R1 = 4.7 k Ω
C = 100 pF
R2 = 68 k Ω
RL = 220 k Ω
Determine the cutoff frequencies and the magnitude of the voltage frequency response
function at very low and at very high frequencies.
Figure P8.55
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 57.
The op-amp circuit shown in Figure P8.57 is used as a filter.
R1 = 9.1 k Ω
C = 0.47 µF
R2 = 22 k Ω
RL = 2.2 k Ω
Determine
a. Whether the circuit is a low- or high-pass filter.
b. An expression in standard form for the voltage transfer function.
c. The gain in decibels in the passband, that is, at the frequencies being passed by
the filter, and the cutoff frequency.
Figure P8.57
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 58.
The op-amp circuit shown in Figure P8.57 is a low-pass filter with
R1 = 2.2 k Ω
C = 0.47 nF
R2 = 68 k Ω
RL = 1 k Ω
Determine
a. An expression for the voltage frequency response function.
b. The gain in decibels in the passband, that is, at the frequencies being passed by
the filter, and the cutoff frequency.
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.
COSMOS: Complete Online Solutions Manual Organization System
Chapter 8, Problem 60.
The op-amp circuit shown in Figure P8.60 is a low-pass filter with
R1 = 220 Ω
C = 0.47 nF
R2 = 68 k Ω
RL = 1 k Ω
Determine
a. An expression in standard form for the voltage frequency response function.
b. The gain in decibels in the passband, that is, at the frequencies being passed by
the filter, and the cutoff frequency.
Figure P8.60
Principles and Applications of Electrical Engineering, 5/e, Giorgio Rizzoni
© 2007 The McGraw-Hill Companies.