Basic Engineering Circuit Analysis
11th Edition
ISBN: 9781118539293
Author: J. David Irwin, R. Mark Nelms
Publisher: WILEY
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Textbook Question
Chapter 4, Problem 41P
Find the expression for in the differential amplifier circuit shown in Fig. P4.41.
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4.90 A reverse-biased photodiode is specified to have a dark current of 100 pA and a responsivity of 0.5 A/W. It is
connected to the transresistance amplifier shown in Fig. P4.90. Assume an ideal op amp.
(a) What is the reverse-bias voltage across the photodiode?
(b) What is the output voltage vo with no illumination?
(c) What is the output voltage vo with 10 µW of light incident on the photodiode?
250 kN
On o
+3 V.
Figure P4.90
Hint: since we are assuming an ideal op amp, there is a virtual short-circuit between
input terminals.
Op Amp Characteristics (assume non-ideal)The op-amp circuit shown in Fig. P4.8 has a constant dcvoltage of 6 V at the noninverting input. The inverting input isthe sum of two voltage sources consisting of a 6 V dc source anda small time-varying signal us.(a) Use the op-amp equivalent-circuit model given in Fig. 4-6 todevelop an expression for uo.(b) Simplify the expression by applying the ideal op-amp model,which lets A→¥, Ri →¥, and Ro →0.
For the amplifier in Fig. P4.15, find the gain
(R1=3.5 kQ, R2=27 KQ)
2
VS
R₂
R₁
-OV
Chapter 4 Solutions
Basic Engineering Circuit Analysis
Ch. 4 - An amplifier has a gain of 15 and the input...Ch. 4 - An amplifier has a gain of 5 and the output...Ch. 4 - An op-amp based amplifier has supply voltages of...Ch. 4 - For an ideal op-amp, the voltage gain and input...Ch. 4 - Revisit your answers in Problem 4.4 under the...Ch. 4 - Revisit the exact analysis of the inverting...Ch. 4 - Revisit the exact analysis of the inverting...Ch. 4 - An op-amp based amplifier has 18V supplies and a...Ch. 4 - Assuming an ideal op-amp, determine the voltage...Ch. 4 - Assuming an ideal op-amp, determine the voltage...
Ch. 4 - Assuming an ideal op-amp in Fig. P4.11, determine...Ch. 4 - Assuming an ideal op-amp, find the voltage gain of...Ch. 4 - Assuming an ideal op-amp in Fig. P4.13, determine...Ch. 4 - Determine the gain of the amplifier in Fig. P4.14....Ch. 4 - For the amplifier in Fig. P4.15, find the gain and...Ch. 4 - Using the ideal op-amp assumptions, determine the...Ch. 4 - Using the ideal op-amp assumptions, determine...Ch. 4 - In a useful application, the amplifier drives a...Ch. 4 - The op-amp in the amplifier in Fig. P4.19 operates...Ch. 4 - For the amplifier in Fig. P4.20, the maximum value...Ch. 4 - For the circuit in Fig. P4.21, (a) find Vo in...Ch. 4 - Find Vo in the circuit in Fig. P4.22, assuming...Ch. 4 - The network in Fig. P4.23 is a current-to-voltage...Ch. 4 - Prob. 24PCh. 4 - Determine the relationship between v1 and io in...Ch. 4 - Find Vo in the network in Fig. P4.26 and explain...Ch. 4 - Determine the expression for vo in the network in...Ch. 4 - Show that the output of the circuit in Fig. P4.28...Ch. 4 - Find vo in the network in Fig. P4.29.Ch. 4 - Find the voltage gain of the op-amp circuit shown...Ch. 4 - Determine the relationship between and in the...Ch. 4 - Prob. 32PCh. 4 - For the circuit in Fig. P4.33, find the value of...Ch. 4 - Find Vo in the circuit in Fig. P4.34.Ch. 4 - Find Vo in the circuit in Fig. P4.35.Ch. 4 - Determine the expression for the output voltage,...Ch. 4 - Determine the output voltage, of the noninverting...Ch. 4 - Find the input/output relationship for the current...Ch. 4 - Find V0 in the circuit in Fig. P4.39.Ch. 4 - Find Vo in the circuit in Fig. P4.40.Ch. 4 - Find the expression for in the differential...Ch. 4 - Find vo in the circuit in Fig. P4.42.Ch. 4 - Find the output voltage, vo, in the circuit in...Ch. 4 - The electronic ammeter in Example 4.7 has been...Ch. 4 - Given the summing amplifier shown in Fig. 4PFE-l,...Ch. 4 - Determine the output voltage V0 of the summing...Ch. 4 - What is the output voltage V0 in Fig. 4PFE-3. a....Ch. 4 - What value of Rf in the op-amp circuit of Fig....Ch. 4 - What is the voltage Vo in the circuit in Fig....
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